

Is your 2004-2006 Chevy Colorado, GMC Canyon, or Hummer H3 suffering from frustrating and unpredictable issues? A faulty Powertrain Control Module (PCM) is often the hidden culprit behind problems like a persistent check engine light, harsh shifting, poor fuel economy, or even a no-start condition. Don’t let a failing computer keep you off the road. This professionally programmed PCM is the definitive, hassle-free solution to get your truck running like new again.
If you’re experiencing any of the following, a failing PCM is the likely cause:
This unit is the direct answer to these problems. We take a genuine OEM module and flash it with the latest, most stable software updates from General Motors, using your vehicle’s specific VIN. This ensures that your new 2004-2006 Colorado PCM is a perfect match, ready to install right out of the box with no additional programming required.
Why is VIN-programming so essential? Your truck’s PCM is the central command center, managing everything from fuel mixture and spark timing to transmission shift points and the anti-theft system (Passlock/VATS). A generic, unprogrammed module from a salvage yard won’t work because it doesn’t have your truck’s specific operational data and security credentials. Our process ensures this 2004-2006 Colorado PCM communicates flawlessly with all other modules in your vehicle, restoring factory performance and security without any extra steps on your part. This isn’t just a replacement part; it’s a tailored restoration of your truck’s core logic.
No. This PCM arrives fully programmed to the VIN you provide and is ready for a plug-and-play installation. No special tools or dealer visits are required.
After you complete your purchase, we will send you an email requesting your VIN. Simply reply to that email, and our technicians will handle the rest before shipping your part.
If the check engine light is caused by an internal failure of the original PCM (common codes include P0601-P0606), this replacement unit is the correct fix. It is always recommended to have your vehicle properly diagnosed to confirm the PCM is the point of failure before ordering.
This unit is backed by our one-year replacement warranty, giving you confidence in your repair.
Yes. This PCM, part number 12600818, is compatible with a wide range of GM trucks and SUVs from this era, including the GMC Canyon, Hummer H3, Chevy Trailblazer, and GMC Envoy. Please verify the part number or check our detailed fitment list to ensure it matches your vehicle.
By investing in a correctly programmed 2004-2006 Colorado PCM, you’re not just buying a part—you’re restoring the heart of your vehicle’s electronics and ensuring it runs reliably for years to come.
Category: GM
eBay Item ID:
To program your module, we require your full 17-digit VIN. Please enter it in the payment notes and save to ensure we receive it. Orders without a VIN within our 2-business-day handling period may be canceled, as programming cannot proceed without it.
Enjoy peace of mind with a one-year replacement warranty on this part, effective from the date you receive it. Labor costs are not covered.
If the part fails within the warranty period, we’ll replace it with a comparable unit or refund your purchase price, ensuring a hassle-free experience.
Return Address:
Highway71autoparts
9131 Highway 71 NE
Spicer, MN, 56288