Is Your 2004-2006 Colorado or Canyon Driving You Crazy?
If you’re dealing with baffling electrical gremlins, you’re not alone. Over my 20+ years in the shop, I’ve seen countless first-generation Colorado and Canyon trucks come in with symptoms that leave owners and even other mechanics scratching their heads. The truck might crank but not start, stall randomly at a stoplight, shift erratically, or have a persistent Check Engine Light with a slew of communication codes (like U0100 – Lost Communication with ECM/PCM). These aren’t just annoyances; they’re signs that the very brain of your truck’s engine is failing.
The Culprit: A Failing Powertrain Control Module (PCM)
The PCM, also known as the Electronic Control Module (ECM), is the master computer for your engine and transmission. Located on the right-hand firewall in the Colorado/Canyon/H3, it lives in a high-heat, high-vibration environment. After years of service, the delicate internal circuits and solder joints can crack and fail. This leads to intermittent connections that cause the unpredictable issues you’re experiencing. It’s not a matter of if, but when, these original modules will give out.
A Technician’s Real-World Experience
“A customer’s 2005 Colorado came in last week with these exact symptoms. It would die at idle but restart fine, and the transmission was shifting hard from first to second. The scan tool showed a code for a faulty throttle position sensor, but replacing the sensor did nothing. After checking the wiring, we traced the issue back to the PCM itself. The 5-volt reference signal it was sending to the sensor was dropping out intermittently. A new, properly programmed PCM fixed everything instantly. Don’t waste money chasing phantom sensor codes when the root cause is often the computer.”
The Simple, Reliable Solution: A VIN-Programmed PCM
Forget the hassle and expense of a dealership visit. This is a direct-replacement Powertrain Control Module for your vehicle. The critical difference is that we handle the most difficult part for you. Before we ship it, our technicians will flash the module with the latest, most stable software release from General Motors, programmed specifically to your truck’s Vehicle Identification Number (VIN). This ensures it communicates perfectly with your truck’s other systems right out of the box.
Why Our Programmed PCM is the Smart Choice:
- โ Solves Common Issues: A direct fix for no-start conditions, stalling, rough idling, poor fuel economy, and false sensor codes.
- โ VIN-Programmed for You: We load the latest GM software using your VIN. This isn’t a generic, one-size-fits-all part. It’s tailored to your exact vehicle configuration.
- โ No Complicated Tools Needed: While a security relearn procedure is required after installation (a simple process you can do yourself in about 30 minutes), you avoid the need for expensive dealership-level scan tools for programming.
- โ Restores Performance: With updated software, you often get improved drivability and shifting characteristics that address issues present even in the original factory programming.
- โ Guaranteed Compatibility: This module is the correct replacement for a wide range of part numbers, ensuring you get the right component the first time.
Guaranteed Fitment & Compatibility
This PCM is a direct replacement for the following part numbers and vehicles. Please verify your part number or contact us with your VIN if you are unsure.
Replaces Part Numbers: 12569773, 12588650, 12589311, 12589585, 12591647, 12591648, 12593531, 12593532, 12594430, 12594431, 12596783, 12596784, 12597521, 12597776, 12597777, 12600818, 12604438, 12604439, 12606369, 12606373, 12606374, 12606398, 12606399, 19209820, 19209821
Fits The Following Vehicles:
- โ 2004-2006 Chevrolet Colorado (RH firewall)
- โ 2004-2006 GMC Canyon (RH firewall)
- โ 2006 Hummer H3 (RH firewall)
- โ 2006 Isuzu i-280 & i-350 (RH firewall)
- โ 2006 Buick Rainier 4.2L (LH engine)
- โ 2006 Chevrolet Trailblazer & EXT 4.2L (LH engine)
- โ 2006 GMC Envoy & XL 4.2L (LH engine)
- โ 2006 Isuzu Ascender 4.2L (LH engine)
- โ 2006 Saab 9-7x 4.2L (LH engine)
The Process is Simple:
- Place your order.
- Provide us with your vehicle’s 17-digit VIN in the notes section or by message.
- We program the module and ship it to you.
- Install the module and perform the security relearn procedure.
Stop the guesswork and get your truck running reliably again. Order your pre-programmed PCM today and experience the difference.