Programmed GM 12602802 Engine Computer | PCM for Silverado, Sierra, Tahoe

Get Your Dependable Truck Back on the Road

Tired of worrying about whether your truck will start or stall? This engine computer, pre-programmed to your VIN, is the key to restoring your peace of mind. It eliminates frustrating electrical gremlins and brings back the smooth, reliable performance you count on. Stop chasing problems and get the definitive solution. Order now and drive with confidence again!

$134.99

+11.99 USPS Priority Shipping

Out of stock

SKU: 590-07633-66 Categories: ,
Guaranteed Safe Checkout

Restore Your GM Truck’s Performance and Reliability

Is your trusted GM truck or SUV suffering from baffling electrical issues, poor engine performance, or a dreaded no-start condition? A failing Powertrain Control Module (PCM) is often the hidden culprit behind these frustrating problems. This pre-programmed engine computer, compatible with service number 12602802, is the direct-fit, hassle-free solution to get your vehicle running like new again and restore your driving confidence.

Common Symptoms of a Failing PCM & Your Solution

If you’re experiencing any of the following, a faulty module is the likely cause. This unit is the definitive fix for:

  • Unexplained Check Engine Light (CEL) illumination
  • Diagnostic Trouble Codes (DTCs) such as P0601, P0602, P0605, or P0606
  • Engine stalling, stumbling, or rough idling
  • Harsh or erratic automatic transmission shifting
  • Poor fuel economy
  • Complete no-start condition where the engine cranks but won’t fire
  • Loss of communication with your scan tool

Instead of paying steep dealership prices or risking a mismatched part from a salvage yard, our programmed GM 12602802 engine computer offers a reliable and cost-effective solution. We handle the complex programming for you, so you can focus on the straightforward installation.

Features & Benefits: The Smart Choice for Your Vehicle

  • ✔ VIN-Specific Programming: We flash the module with the latest GM software updates using your vehicle’s unique VIN. This ensures perfect compatibility with your engine, transmission, and all factory options.
  • ✔ Plug-and-Play Ready: This unit arrives ready for installation. In most cases, a simple security relearn procedure (that you can do yourself) is all that’s needed to get back on the road.
  • ✔ Restored Performance: By correcting false sensor readings and restoring proper engine parameters, this module will bring back the smooth power, crisp shifting, and fuel efficiency you expect from your vehicle.
  • ✔ Cost-Effective Solution: Get a fully functional, correctly programmed module without the high cost and scheduling delays of a dealership service center.
  • ✔ Guaranteed Quality: This unit is backed by our one-year replacement warranty, giving you confidence and peace of mind in your repair.

An Expert’s Note on Programming: Over my 20 years under the hood, I’ve seen countless issues caused by improperly matched control modules. A ‘junkyard’ computer might physically fit, but without the correct VIN-specific software for your vehicle’s options (like transmission type, gear ratio, and emissions), you’re just trading one set of problems for another. Our process eliminates that guesswork. We flash this programmed GM 12602802 engine computer with your vehicle’s exact data, ensuring it communicates flawlessly with all other systems from the moment you install it. It’s the difference between a temporary patch and a lasting repair.

Frequently Asked Questions

Do I need to do any programming myself?

No. We pre-program the module to your vehicle’s VIN before shipping. The only thing you may need to perform is a security relearn procedure, also known as a VATS relearn, which takes about 30 minutes and can be done at home with just your key.

What information do you need from me?

After you place your order, you will need to provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This is critical for us to program the module correctly for your specific truck or SUV.

How do I know if this part will fit my vehicle?

Please review the detailed compatibility list on this page. The most important step is to match the service number on your current module to one of the numbers listed (e.g., 12602802). Providing your VIN for programming ensures it will work correctly once installed.

What is a security relearn procedure?

It’s a simple process that syncs this new module with your vehicle’s anti-theft system. It typically involves a sequence of turning the key to the ‘ON’ position for 10 minutes, then ‘OFF’ for 10 seconds, and repeating this two more times. We can provide detailed instructions upon request.

Will this work if my vehicle has performance modifications?

This module is programmed with the original factory GM calibration. It is intended for vehicles with stock or near-stock configurations and is not designed to accommodate significant aftermarket performance modifications.

MPN

12602802

Year

Conditions & Options

12589463

Genuine OEM

Yes

Condition

Refurbished

PartNumber

590

Model

ENVOY XL

Make

Year

2004

Brand

CHEVROLET TRUCK

Manufacturer Part Number

Interchange part number

Scroll to Top