Hopefully my video helps others with this issue and saves them money. As some of you have seen from my previous posts I've been having a odd issue with random electrical issues. This effects some 2014 trucks, not sure about 2015. I've been having errors about stabilitrack, flickering headlights, cruise control issues, among others.4. Rough Ride. Another common symptom of failing struts or shocks is when your Silverado starts having an unusually rough ride while driving, even on generally smooth roads. You may notice the car bouncing around more than usual as you drive over bumps, or the vehicle may seem to sway more than it should while driving.The most common symptoms of dead battery in Chevy Silverado 3500 HD are slow engine crank, no start, dim lights, flickering dashboard lights and clicking noises when trying to start the engine. ... When the ground is bad, the starter solenoid may still work and make clicking noises as it has low current requirement, but the starter motor may ...1. Lack of power when accelerating. One of the first symptoms that a vehicle will display when the air charge temperature sensor has failed is a noticeable reduction in power when accelerating. A bad or failing sensor will not send the correct signal to the computer which will negatively affect the computer's air / fuel mixture calculations.Symptoms Of A Bad ABS Control Module. The most common symptom of a bad ABS control module is an ABS warning light on your dashboard. You may also notice locking wheels while braking on slippery surfaces. Another less common sign is a stiff or unresponsive brake pedal. These are not all the signs, so here is a more detailed list of the signs of ...Nov 12, 2019 · The ignition switch is a critical component of a vehicle’s electrical system that plays an important role in starting and stopping the engine. The Silverado’s ignition switch is not what your key goes into. That is called the lock cylinder. The ignition switch typically sits directly behind the lock cylinder. It has three main functions.How the battery sensor works: it measures the current to and from the battery. The sensor may also monitor the voltage, state of charge and state of health of the battery (aging). In some cars, it even measures the temperature of the battery. The vehicle computer (BCM or PCM) uses these inputs to precisely adjust charging system voltage, idle ...When determining if your Chevy Silverado’s fuel pump is going bad, there are a few common symptoms to look out for. Here, we’ll discuss three key indicators that your fuel pump might be failing. 1. Whining Noise. The sound clip above is a fuel pump priming. After it has primed, you may hear a high-pitched whining noise, which can indicate a ...MEGA fuses are bolt-down style fuses that are used to protect high current circuits. If a MEGA fuse blew, the car likely would not operate at all because these fuses protect critical, high current circuits, ones important to keeping the car's electrical system operating. If a fuse (of any type) fails, that causes the circuit to instantly open ...1. Vehicle Won't Start. The most obvious warning sign of a bad starter relay is when the vehicle won't start when you engage the ignition process. As stated above, electronic keys do not have a manual ignition switch. However, when powered, it should send a signal to the starter relay once the key is turned or the starter button is pressed.1. Turn signal indicator continues to blink when the steering wheel returns to the center. This symptom likely reflects a failure of the mechanical portion of the turn signal switch. Unfortunately, we’ve all seen drivers cruising straight down the road, with their turn signal still blinking. This failure mode is the likely original cause.That's fairly normal. You can do a search for "the big three" on here or google and it will explain how to increase wire sizes for a ground and power wire from the alternator. This may help with the problem a bit, but it's really not a "problem".With eight first-class seats on each plane, the grounding will potentially have a big impact on Lufthansa first-class award availability. While I've had the opportunity to experien...After rallying to record-setting prices, recapturing the attention of the public and becoming once-again the topic du jour, cryptocurrencies are losing ground today. Bitcoin, the b...The high speed data line includes the BCM, PCM, TCM, VCIM, FPFCM, EBCM, TCSCM, and the TBCM. My thoughts point towards blown fuse so start there, if all is good start by unplugging each of the modules one by one and pray you did not take out the pcm. If the high speed data line is shorted to ground, power, or together it will eliminate ...No-Start Condition. This is one of the more obvious signs of a bad ground, manifesting in much the same way as a loose battery cable or a dead battery. When you attempt to start your car, you may hear a single click or a rapid tapping; this is the sound of the starter's solenoid opening or closing, or the sound of the starter's Bendix drive ...No-Start Condition. This is one of the more obvious signs of a bad ground, manifesting in much the same way as a loose battery cable or a dead battery. When you attempt to start your car, you may hear a single click or a rapid tapping; this is the sound of the starter's solenoid opening or closing, or the sound of the starter's Bendix drive ...Symptoms Of A Bad Ignition Relay. The most common symptoms of a bad or failing ignition relay are an unresponsive ignition, stalling engine while driving, fluctuating ignition power, and a dead car battery. ... Ground the 86 pin from the ground on the car battery and you should hear a clicking sound from the relay. Check with a multimeter if ...Here are the most common symptoms of bad coil packs: 1. Service Engine Soon Light. The check engine light is one of the most common symptoms of bad Coil Packs. More often than not, your engines computer will be able to detect bad Coil Packs in your Silverado. There are several misfire related trouble codes.2003 Silverado LS 4.8L with ~230k miles. Truck was running fine yesterday afternoon/evening. Try to turn it on this morning and I hear a set of about 6 clicking noises. Then try again and this time absolutely no noise and same each time I try now. I have zero power. No locks, windows, lights, nothing.The main symptom of a bad clutch in an automatic transmission is when your vehicle's rpm climb and your engine gets louder as the gas pedal is depressed, but the vehicle is not accelerating as quickly as it should. A clutch (or clutches) in an automatic transmission operates differently than a clutch in a manual transmission but has the same ...Jun 28, 2022 · The voltage should be between 13.5 and 14.8 volts with the engine running. Switch on the accessories in your Silverado HD, for example, headlights, AC fan at full speed, and interior lights. The voltage should remain around 14 volts. If it drops and remain below 13.5 volts, it indicates a problem with the current supply from the alternator.MEGA fuses are bolt-down style fuses that are used to protect high current circuits. If a MEGA fuse blew, the car likely would not operate at all because these fuses protect critical, high current circuits, ones important to keeping the car’s electrical system operating. If a fuse (of any type) fails, that causes the circuit to instantly open ...Cruise control is a speed control system that maintains a desired vehicle speed under normal driving conditions at speeds above 40 km/h (25 mph). Steep grades may cause variations in the selected vehicle speeds. The following are the main components of the Cruise Control System: The accelerator pedal.The importance of a ground strap in a car. Besides being strictly necessary to close your car battery’s circuit, a ground strap ensures your battery will operate at a consistent and useful voltage. It also reduces the likelihood of a short circuit. A short circuit occurs when current flows on an unintended path, leading to unusually high ...If you're driving down the road and you start to hear a clunking, rattling or metal-on-metal scratching noise, it is possibly the stabilizer bar links causing the sound. The stabilizer bar links are supposed to fit incredibly snugly, without any play or movement except between rubber bushings. When the links are worn out, the sway bar will ...It can be rough when you don't feel like you're heard in a conversation, but it can be even worse when someone hears exactly what you're saying and tries to steamroll right over yo...Jul 31, 2014 · Both are misleading. The wiring diagrams state that the coils ground to G109, then in parenthesis it says (located on lower left of engine.) The pictures show G109 as being on the lower left of the engine. However jimmyjam's pictures showed G109 as being on the front of the motor towards the passenger's side.3. Visually inspect the actuator to ensure it's mounted properly and the linkage is not binding. Visually inspect the door lock actuator and linkage. 4. Remove the actuator connector. 5. Set your meter to the 20 volts DC scale. 6. Connect the negative meter lead to a good ground.The battery tray ground is a significant grounding point in your Chevy Silverado. This ground point allows the electrical system to close its circuit, ensuring a proper return path for the electrical current to the battery. ... Bad TPMS Sensor Fix – How to Do It in 9 Steps. Dodge Truck A/C Switch Stuck on Defrost – Solve in 9 Steps. About Us.The light will often fail to flash or show when the car battery is compromised. The battery could be dead, or the terminals are faulty. In other instances, the anti-theft system might be the problem. The anti-theft system itself could be dead, making the flashing light die as well.Unusual noises when vehicle accelerates. Unusual noises are some of the first symptoms produced by a bad or failing center support bearing. An excessively worn or faulty center support bearing will howl or squeal when the vehicle accelerates from a stop. The howling or squealing may quiet down as the vehicle picks up speed.A_T_Ver Discussion starter. 124 posts · Joined 2008. #1 · Sep 3, 2010. What are the symptoms of a bad ecm? One day my truck would run great up to about 45mph the crap out on me, shake and rattle then die. Codes are p0642 and p0802. Yesterday it was hard to start and runs horrible then dies. I checked for harness rub, found nothing, i'm ...1. DTC C0306 (Motor A/B circuit malfunction) 2. awd ( auto 4x4) Works just as it should. removed rear drive shaft and it pulls me around yard. 3. 2Hi works as well. 4. 4Hi engages But Front Diff will NOT pull truck. (front actuator engages and transfer case goes clunk) Jack up front end and front wheel spins.Summary. The four signs of a bad starter solenoid include an engine that won't start; the absence of a clicking noise when cranking the engine; a spinning starter without an engaged flywheel; and a slow-cranking engine. There are three ways to check if you have a bad starter solenoid: testing the battery, inspecting the starting circuit, and ...The only major symptom of bad wheel speed sensor in Chevy Silverado 1500 is the ABS warning light comes on in the instrument cluster, and the anti-lock braking system is disabled. When the ABS light / comes on in your Silverado 1500, the anti-lock braking system is disabled. The vehicle can still be braked without ABS.66 posts · Joined 2011. #1 · Apr 10, 2012. Hey guys have an 03 silverado and just started having a problem with my drivers side door. I have no power to my window switches, mirror switch, locks, lights, and doesn't ding when door is open with key in ignition. Passenger side works find though. Checked all fuses.Symptoms Of A Bad ABS Wheel Speed Sensor. The most common symptoms of a bad ABS sensor are an ABS warning light on the dashboard, pulsating brake pedal, loss of anti-lock brakes, or loss of traction control. You may also notice other warning lights on the dashboard, such as the check engine light or traction control light.Your Chevy Silverado's water pump is one of the most crucial parts of the engine. If it doesn't pump water through the engine, it's going to overheat and do a lot of damage. Typical signs of a bad water pump include overheating, white smoke, a bad smell, rough idle, and more. A water pump works by pumping water through the engine.Some 2003 Chevy Silverado fuel pump problems include a whining noise, hard starting, engine performance issues, and an inability to start the truck. One of the firSTSymptoms of a problem with the fuel pump is a loud whining sound. An old or worn fuel pump may produce a noticeably loud whine or howl while running. Most fuel pumps will produce a quiet hum during their normal operation, however ...Here are the basics of how a TPS circuit works. At idle, the circuit sees very little voltage - so. the ECM does not schedule much fuel. If you floor the pedal, the circuit sees max. voltage and so schedules lots of fuel. The problem comes from when pedal movement does. not cause a voltage change. It's basically a.DTC P1870 is stored on a 4L60-E (M30). The following tools are available from Kent-Moore (1-800-345-2233) for use in removing and relocating the VCM wires: 1. J 41758 Terminal Tool; used to remove the wire from the VCM connector. 2. J 41759 Punch; used to punch a new hole through the connector seal.It can be rough when you don't feel like you're heard in a conversation, but it can be even worse when someone hears exactly what you're saying and tries to steamroll right over yo...PCM Ground Wire Diagnostics using a “Graduated Eye-Ball, Hands and Fingers: ... The Mechanic installed a New ECM-PCM for this 08’ Silverado and then hooked up the OBD2 Port to a J-2534 Unit acting as a PASS-THRU Device via his Laptop Computer in order to Re-Program the New PCM via a TIS2WEB Update with the Correct Truck …Tie rods, struts, ball joints, improper alignment, and the power steering pump are a few other elements that can create symptoms that are similar to those of a malfunctioning, worn out steering rack. The steering rack serves as the system's beating heart. Your ability to control your car is hindered when it malfunctions or completely wears out.LU3/LG3 (2003-2014 in Silverado, Sierra, S10, Blazer, etc.) ... Symptoms of Bad Spider Injectors. Misfire engine codes (P0400-P0406 and P0300 codes) ... ignition coil cranshaft position sensor cleaned dirt oil off ground need help bad. Reply. Jake Mayock says: December 29, 2022 at 9:25 am ...I suspect a bad ignition switch in my 2003 Chevy Silverado. Symptoms: Longer than normal cranking to start. The instrument cluster dies intermittently while driving although the truck continues to run. It looks as if the key has been turned to the "run" position without starting. When the instrument cluster fails the A/C stops blowing cold air.Connect the black cable of the multimeter to negative terminal of the battery, and the red cable to the positive terminal. The voltage should be between 13.5 and 14.8 volts with the engine running. Switch on the accessories in your Silverado 1500, for example, headlights, AC fan at full speed, and interior lights.A bad fuel pump, ignition problems, clogged fuel filter, bad mass airflow sensor, and bad crank/camshaft sensors are just a few of the problems that can cause an engine to not start. 5. Poor Shifts. The transmission may have a hard time shifting, or not even be able to shift at all. Conclusion: Chevy S10 Bad PCM SymptomsDrag in vehicles. While you are driving your car, if you notice it feels sluggish or is dragging, there may be a problem with the parking brake. This could be the parking brake drum, the parking brake release cable, or both depending on the severity of the issue. Only a professional mechanic should diagnose this problem because it is a safety ...Step 1 – Check for bad axle actuator. If your truck is driving perfectly fine but switching into 4WD doesn't engage the front wheels, you might have a bad axle actuator. Replacing the actuator is pretty easy …Here down below is a more detailed list of the signs of a bad or failing clock spring to look for: 1. Airbag Warning Light. Even if your car does not have a lot of fancy functions, one thing it most likely has is an airbag inside the steering wheel. The airbag is a susceptible system, and the slightest fault will light up the airbag warning ...Hello, You might consider checking the resistance of the new sensors to make sure they weren't bad out of the box. Resistance should be 93-107K ohms. According to the repair information I have, the torque is also important on these knock sensors, and both should be snugged down to 15 ft lbs.Stage 1: Vibrations. The most noticeable symptom of a motor mount that is going bad is vibration. That is, more vibration than you would typically feel when you are driving your Silverado. You'll know when it's happening. It may not necessarily feel like the vehicle is going to rattle apart, but it's very noticeable.Here is a more detailed list of the signs of a bad or failing coolant temperature sensor to look for: 1. Check Engine Light. One of the first signs of all coolant temperature sensor symptoms you will probably notice is that the check engine light will show up on your dashboard. If the computer detects any problem with the sensor’s circuit, it ...The Silverado uses this signal for many vehicle functions. It helps control transmission shifts, ABS, cruise control, the speedometer, and more. Fixing it should be considered a priority. Chevy Silverado P0500 Symptoms. Symptoms will vary depending on the model year and other conditions. But, these are the most common symptoms of P0500 in general.Indices Commodities Currencies StocksThe easiest way to bypass the Passlock 2 system is to place a resistor between the passlock sensing wire and the ground reference wire. To find these wires, look for three wires that at some point are wrapped together, coming from the ignition barrel. Usually, they are orange/black, red/white, and black. They can also be yellow, red/white, and ...Nov 20, 2010 · Main thing is you got to test evreything and leave the ECM as the last option. Some auto parts stores have a free scan service and could tell you what the problem might be..... :wink: 1989 GMC Suburban V1500 1/2 ton 4 x 4 350 c.i. f.i. 4 spd auto 187,000 mi and counting..... Like. S. slimyguts Discussion starter.Diagnostic Procedures. To diagnose a bad fuel pressure regulator, follow these steps: Locate the Fuel Pressure Regulator: Pop the hood and find the fuel pressure regulator. Inspect for External Damage: Visually inspect the regulator for any signs of damage, such as leaks, cracks, or broken connections. Replace it if necessary.When the switch does fail, usually a few symptoms will be produced that can alert the driver that a problem has occurred and should be serviced. 1. Reverse lights function intermittently. Intermittent functionality of the reverse lights is a symptom that the backup light switch may be having a problem. If the contacts in the switch are worn or ...It is porbably short somewhere, Trace the wiring from the O2 sensors all the way back and see if its touching any surfaces that may be hot (exhaust,etc to the fuse box) also check your fuse box for a blown fuse. Check the fuse box first and then check the wiring of the O2 sensors going to the fuse box. ThomasG.If you have a weak spark, you may be dealing with a: bad spark plug wire. bad distributor cap or rotor. faulty ignition wire or coil. ignition module or ignition driver in the powertrain control module (PCM) bad coil-on-plug coil. depending on your ignition system configuration. Consult your vehicle repair manual.To diagnose bad fuel injectors in your Chevy Silverado, start by performing a fuel pressure test. This test helps you determine if the issue is related to fuel injectors, a fuel pump, or a fuel filter. Connect a fuel pressure gauge to the rail and check the pressure. If the pressure is within the specified range, you can rule out the fuel pump ...Asked by 1993_GMC_1500 Feb 02, 2013 at 10:37 AM about the 1993 GMC Sierra 1500 C1500 SLX Extended Cab SB. Question type: Maintenance & Repair. While im driving my truck acts as if i. put it in neutral. Last for just a. second, sometimes it "stutters" per. say, The engine revs but it doesn't. actually kept going.Alternators don’t blow without any reason. Make sure to have a trained professional inspect your vehicle for any underlying issues once this happens. A blown alternator fuse can cause your vehicle to exhibit several symptoms, such as a dead battery, dim lights, illuminated warning lights, and other electrical oddities.Apr 11, 2013 · That's fairly normal. You can do a search for "the big three" on here or google and it will explain how to increase wire sizes for a ground and power wire from the alternator. This may help with the problem a bit, but it's really not a "problem".No-Start Condition. This is one of the more obvious signs of a bad ground, manifesting in much the same way as a loose battery cable or a dead battery. When you attempt to start your car, you may hear a single click or a rapid tapping; this is the sound of the starter's solenoid opening or closing, or the sound of the starter's Bendix drive ...This wire should only go hot when the brake pedal is pressed. If this checks out ok, then the controller is bad and must be replaced. We have a video that shows how to bench test a brake controller, I'll give you a link to the video below. If you find that you need to replace the controller, I'd recommend the Tekonsha Prodigy P2, part # 90885.4. Remove the battery (optional) If a bracket is holding the battery in place, you will simply need to unscrew the bolts (usually two) that hold it there. Once done, carefully lift the battery out of the engine bay and set it on the ground. 5. Remove bad ground strap.I have a 2003 Chevy Silverado 2500 6.0 the first code was P0332 and i changed the Knock sensors with AC Delco parts and after clearing the code I drove 3 miles down the road and now got a P0327 code. ... (even new ones can be bad out of the box, you can damage them just by dropping them on hard ground), or a wiring/connector problem, or a ...Bad MAP Sensor Symptoms. A bad manifold absolute pressure (MAP) sensor can upset fuel delivery and ignition timing. Depending on your vehicle model, your engine might experience one or more of these performance problems: Rich air-fuel ratio. Lean air-fuel ratio. Surging.The voltage should be between 13.5 and 14.8 volts with the engine running. Switch on the accessories in your Silverado HD, for example, headlights, AC fan at full speed, and interior lights. The voltage should remain around 14 volts. If it drops and remain below 13.5 volts, it indicates a problem with the current supply from the alternator.I suspect a bad ignition switch in my 2003 Chevy Silverado. Symptoms: Longer than normal cranking to start. The instrument cluster dies intermittently while driving although the truck continues to run. It looks as if the key has been turned to the "run" position without starting. When the instrument cluster fails the A/C stops blowing cold air.3. Visually inspect the actuator to ensure it’s mounted properly and the linkage is not binding. Visually inspect the door lock actuator and linkage. 4. Remove the actuator connector. 5. Set your meter to the 20 volts DC scale. 6. Connect the negative meter lead to a good ground.Step 1. Locate the ground connection for the brake and tail lights. This will require you to remove the trim panels in some car trunks, which you can in some cases accomplish with a Phillips-head screwdriver or a small socket. The method will depend on the make of the car.Jun 12, 2019 · When determining if your Chevy Silverado’s fuel pump is going bad, there are a few common symptoms to look out for. Here, we’ll discuss three key indicators that your fuel pump might be failing. 1. Whining Noise. The sound clip above is a fuel pump priming. After it has primed, you may hear a high-pitched whining noise, which can indicate a ...A bad ground can cause all sorts of weird issues. You can also unhook your battery for awhile and then see if some of the codes go away. 2015 SILVERADO LTZ 6.2L -4x4 -8 Speed -HDX Steps. 1964 C-10 383 Stroker -12 Bolt Posi -Custom Holley 650 -Hurst Shifter -Stan's Headers -2 1/2" duals w/H pipe-40 series Flowmasters.2005-2006 Pontiac GTO. Equipped with a 4.8 5.3 6.0 or 7.0 V-8 Engine. The following diagnosis might be helpful if the vehicle exhibits the symptom (s) described in this PI. Condition/Concern: A vehicle may be brought into the dealer for a reduced power message, and DTCs P0120, P0220, P1516, P2101, or P2135.Dec 3, 2018 · Updated on 12/03/18. There is a solenoid in your GM converter that causes the the torque convertor clutch (TCC) to engage and disengage. When the TCC solenoid receives a signal from the engine control module (ECM), it opens a passage in the valve body and hydraulic fluid applies the TCC. When the ECM signal stops, the solenoid closes the valve ...DTC P1870 is stored on a 4L60-E (M30). The following tools are available from Kent-Moore (1-800-345-2233) for use in removing and relocating the VCM wires: 1. J 41758 Terminal Tool; used to remove the wire from the VCM connector. 2. J 41759 Punch; used to punch a new hole through the connector seal.First you have to gain access to it. Use your finger to separate the clips that hold the cluster together. Pull the backside cover of the cluster off. Figure 5. Removing backside cover. Place the board in a flat surface. Begin to heat up the solder torch. Inspect the solder points for the plug connector on the board.718 posts · Joined 2019. #4 · Mar 6, 2022. The majority of the electronics are grounded to the cab/body. Each of those grounds can be poor OR the cab grounding to the frame is poor. The test to do is from the battery (-) to the cab/body. Larry - Cleveland. 2009, 2500HD, 6.0 L, 4x4, Ext Cab, Aluminium FlatBed. Like.2003-2006 Silverado 1500 Electrical Problems! | Instrument Cluster Not Working! | (94K miles) - YouTube. Dan's Guide to Everything. 17.7K subscribers. …Possible ground problem. Hello, I have a 2006 gmc sierra with an lbz and 6 speed Alison. Today I fired the truck up, put it in reverse, backed up, then put it in drive and began moving forward with very light throttle (not even 10 mph). Then all the sudden the truck wasn't responding to throttle, I gave it more gas and the engine spulled up but ...GM stock is in the spotlight today as General Motors gets ready to unveil its Chevrolet Silverado E truck. Where is the automaker going next? Wedbush says the Silverado E is 'not y...1. Fuel smell. One of the first symptoms commonly associated with a bad or failing fuel filler neck is a fuel smell. While a faint fuel smell when filling up is normal, if the smell lingers or becomes stronger over time that could be a sign that the fuel filler neck may have a small leak. Aside from a fuel smell, a filler neck that is leaking ...Plan ahead now, get back to the skies that much faster. We're well into our second month of collective quarantine and travelers are getting antsy from being grounded for so long. B...This video will teach you about 6 bad crankshaft position sensor symptoms. Watching this video will help you diagnose to see if it is time to replace your cr...2. "Clunk" with a ringing sound when shifting from Drive to Reverse. This noise usually indicates that the universal joint bearings have enough excess clearance to allow the driveshaft to rotate slightly, then come to a hard stop, when power is reversed. This can be the next stage of deterioration after having insufficient grease in the u ...Bad grounds can be tricky the first time you see them. Here is a playlist I've created for other bad ground case studies https://youtube.com/playlist?list=PL...Chevrolet Silverado 1500 Pickup Truck PCM; Chevrolet Silverado 2500 Pickup Truck PCM ... When there are symptoms of a Bad Engine Control Module, such as erratic engine behavior, reduced fuel efficiency, or failure to start, the problem often lies elsewhere. ... Solo Auto Electronics has been serving the automotive community since 2003, and is ...Check Engine Light is on. One of the first symptoms of a problem with the EVAP vent solenoid is an illuminated Check Engine Light. If the computer detects an issue with the EVAP vent solenoid signal, position, or circuit, it may set off the Check Engine Light to alert the driver of a potential issue. 2. Pressure in the gas tank.Bad grounds can be tricky the first time you see them. Here is a playlist I've created for other bad ground case studies https://youtube.com/playlist?list=PL.... This even happens with the wiper switch on the steering colFirst you have to gain access to it. Use your finger t Symptoms Of A Bad Ignition Relay. The most common symptoms of a bad or failing ignition relay are an unresponsive ignition, stalling engine while driving, fluctuating ignition power, and a dead car battery. ... Ground the 86 pin from the ground on the car battery and you should hear a clicking sound from the relay. Check with a … Bad grounds can be tricky the first time you see t Step 1 - Check differential code. For the 96-06 Silverado's, the factory limited slip differential will have a code of G80. The RPO code should be listed inside the glove box. If you purchased the truck used or can't find the code, proceed to Step 2 for another form of testing. Figure 3.Its a 03 ECSB Z71 with the 4.8, and it has an issue where most of the time it has no start/no crank. Every so often the truck will either try to crank very briefly, it will start and immediately die, or it will start and run "fine" (it'll set some misfire and O2 codes when it runs for a while), nut is still unable stay running under load. Both are misleading. The wiring diagrams state that the coils gr...
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