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Chevy Silverado 1500 Troubleshooting

Is your Chevy Silverado 1500 giving you starting or running problems? Do you need help in programming the systems? The number of different modules and systems on the vehicle can make troubleshooting and programming difficult. While some issues may require a visit to a shop, others are DIY jobs. The recommendations of verified mechanical Experts will allow you to understand the problems and solutions so you can make informed repair decisions.

Continue reading to see some questions answered by Experts.

What is the rear axle ratio for a JL4 axle on a 2012 Chevy Silverado 1500?

The ratio for the JL4 axle is 3.08.

What is the cheapest way to reprogram the PCM of a 2007 Chevy Silverado after the throttle body and accelerator assembly are replaced?

The only way to reprogram the PCM is with a compatible scan tool. One option to check with local auto parts stores to see if any will rent the scan tools. However, the cost of rental may be as much as having the reprogramming done at a shop. It is normally better if a professional mechanic does the programming.

What is the pass lock sensor data programming procedure for a 2004 Chevy Silverado 1500?

The procedure is as follows:

  1. Begin with the ignition in the OFF position.
  2. Attempt to start the engine. If it will not start, allow the key to return to the ON (not OFF) position.
  3. Observe the security light. After about 10 minutes it will turn off.
  4. Turn the ignition to the OFF position.
  5. Wait five seconds.
  6. Repeat steps 1 - 4 two more times for a total of three cycles.
  7. Ensure that the ignition is in the OFF position.
  8. The system is now ready to learn the pass lock sensor data code.
  9. Turn the ignition from OFF to START to enable the code to be learned.

What could be the reason for the tail and license plate lights on a 2012 Chevrolet Silverado 1500 to stop working at the same time?

Case Details: The brake, reverse, and turn signal lights work.

The lights going out at the same time points to a ground issue as they share a common ground. However, before looking at that possibility, check the fuses and the connection and replace or repair as required. If no problems are found, use a volt meter to check for 12 volts at the bulbs. If there is no voltage, check the wiring for any breaks or shorts. If there is power, then the ground issue remains. Instead of trying to trace the ground issue, it may be easier to run a new ground. Locate any of the black wires at the tail lights. Cut one and solder another wire to it. Run the new wire to the frame or body and attach it with an eyelet. The lights should now work with the new ground.

What does a U0073 fault code mean on a 2007 Chevy Silverado?

A U0073 code is set when there is a communications issue with the CAN bus. This is the network that the different modules in the vehicle use to communicate with each other. The problem could be a wiring issue or an internal failure in any of the modules causing the network to short to ground or power. A high-end scan tool will be required to find the fault. A code reader will not suffice.

What could be the reason for the engine on a 2000 Chevy Silverado to cut off when the speed drops below 20 MPH?

Case Details: A scan show fault code P0405 has been set.

This code relates to an EGR valve issue. Check the wiring and connectors for any shorts, damage or corrosion, and repair as required. If no problems are found, then the valve itself may be faulty. If so, it will have to be replaced.

Can the oil pan from a 2007 Chevy Silverado Classic 5.3 non-AFM be fitted on a 2007 Silverado 1500 5.3 AFM?

No, this will not work. Although the pan can be installed, the oil filter for the AFM engine will not fit.

Why does a P0420 Bank 1 code keep returning after the oxygen sensors and catalytic converter on a 2003 Chevy Silverado 1500 were replaced?

The system must do a relearn for the codes to disappear. There are two different procedures that have to be completed. For the EVAP system to relearn the vehicle will have to be driven as per GM document no. 110124. For the catalyst system GM document no. 744510 will have to be followed. These documents will be available from a dealer, many independent shops or online.

What could cause the “Service Stabilitrac” and “Traction Control Off” lights to intermittently illuminate on a 2007 Chevy Silverado 1500 5.3?

Case Details: When the lights are on the gear shifting is hard. All the gauges work properly.

The gauges working normally and the warning lights being intermittent point to a voltage issue. This is often caused by a weak battery or one with a dead cell. The battery should be load tested since a dead cell may show 12 volts when not under load. If the battery is okay but has a low charge, have the alternator load tested – it may not be charging the battery properly. If the battery and alternator are okay, check and clean the battery ground. If the problem remains, replace the battery cables – one of both may be damaged and causing the problem. Once the voltage issue is sorted out, the hard shifting issue should also be resolved.

Reading this article will have given you an idea of the different systems in a Chevy Silverado 1500 and their complexity. This can make problem identification and repair difficult and time-consuming. The opinions of verified mechanical Experts will give you the guidance you need have the problems diagnosed and fixed properly. There is no need to go to a shop or dealer for this. You can contact Experts online, at times of your choice, to get clear personalized answers to your questions.

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