Restore Your GM Truck’s Performance and Reliability
Is your Chevrolet Express, Silverado, or Sierra running rough, shifting erratically, or displaying a persistent Check Engine Light? A failing Powertrain Control Module (PCM) can bring your work to a halt, causing frustrating diagnostic headaches and costly downtime. This professionally programmed engine computer is the definitive, hassle-free solution to restore your vehicle’s core performance and get you back on the road with confidence. It arrives flashed with the latest GM software updates, specifically matched to your vehicle’s VIN number.
Common Symptoms & Your Solution
A faulty PCM is the hidden cause behind many perplexing vehicle issues. If you’re experiencing any of the following, this module is the reliable fix you need:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) like P0601, P0602, or P0606
- Poor engine performance, hesitation, or stalling
- Reduced fuel economy
- Harsh or incorrect automatic transmission shifting
- Complete no-start condition where the engine cranks but won’t fire
Replacing your old unit with this pre-programmed 2001-2002 Express 3500 PCM bypasses the need for expensive dealership programming, saving you time and money.
Features & Tangible Benefits
- โ VIN-Specific Programming: We flash the module with your vehicle’s unique VIN, ensuring it works seamlessly with your specific options and systems right out of the box.
- โ Latest GM Software Updates: Your computer is loaded with the most current factory software, correcting original bugs and optimizing fuel efficiency, emissions, and transmission performance.
- โ Simple Installation: Designed for a direct fit, this module allows for a straightforward swap. Just disconnect the battery, replace the old unit, and reconnect.
- โ No Core Charge: Keep your old part. There are no core charges or hassles with returning the original module.
- โ Peace of Mind Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The ‘Brain’ of Your Vehicle
Think of the PCM as the central nervous system of your truck or van. It controls everything from the fuel injectors and spark plugs to the transmission shift points. A generic, non-programmed module from a salvage yard simply won’t work, as it’s coded to a different vehicle’s security system and options. Our process ensures this new ‘brain’ is a perfect match, restoring the crisp, reliable operation your GM vehicle had when it left the factory.
Frequently Asked Questions
Do I need to do any programming after I receive it?
No. This PCM comes fully programmed to the VIN you provide. However, on many GM vehicles, you will need to perform a simple security relearn procedure, also known as a CASE or Crankshaft Variation relearn. This can often be done without special tools and instructions can be easily found online for your specific model.
Where do I provide my VIN?
Please enter your 17-digit Vehicle Identification Number (VIN) in the notes section during checkout or send it to us in a message after your purchase. We cannot program and ship your module without it.
Is this a brand new part?
This is a quality, tested component that has been professionally prepared and programmed for your vehicle. It is guaranteed to function correctly and is a reliable, cost-effective alternative to a new dealership part.
Will this fix my vehicle’s problem for sure?
This module will correct any issues directly caused by a failing PCM. While it solves a wide range of common problems, we always recommend a proper diagnosis by a qualified mechanic to ensure the PCM is the root cause of your issue before ordering. This 2001-2002 Express 3500 PCM is the correct part for the listed applications.
How difficult is the installation?
On most of the listed trucks and vans, the PCM is located in the engine bay and is easily accessible. The physical swap typically involves disconnecting the battery, unplugging a few electrical connectors, and unbolting the module. It’s a job most DIY mechanics can handle with basic tools.