Restore Your Truck’s Heartbeat and Drive with Confidence
Is your Chevrolet Colorado or GMC Canyon suffering from baffling electrical gremlins? Stalling at stoplights, hesitating on acceleration, or a persistent Check Engine Light can turn a reliable workhorse into a source of daily frustration. The Powertrain Control Module (PCM) is the brain of your vehicle, and when it falters, the symptoms can be unpredictable and concerning. This isn’t just an inconvenience; it’s a matter of reliability and peace of mind. We offer the definitive solution: a professionally programmed PCM, ready to restore your truck’s performance and your confidence in its dependability.
Forget the hassle and expense of a dealership visit. We take the guesswork out of the equation. Simply provide your vehicle’s VIN during checkout, and our expert technicians will flash this module with the latest, most stable GM software updates specific to your truck. It arrives at your doorstep ready for a straightforward installation, getting you back on the road quickly and affordably.
Warning Signs Your PCM Needs Attention
- ✔ Unexplained Check Engine Light: Often with communication-related trouble codes like P0601, P0606, or U-series codes.
- ✔ Erratic Engine Behavior: Experiencing rough idling, stalling, poor acceleration, or a sudden drop in fuel economy.
- ✔ No-Start Condition: The engine cranks but refuses to start, even with a good battery and fuel supply.
- ✔ Harsh or Incorrect Shifting: The transmission may shift erratically or get stuck in one gear.
- ✔ Intermittent Electrical Issues: Gauges acting strangely or other electronic components failing without a clear cause.
- ✔ Failed Emissions Test: Inability to pass smog inspections due to module-related faults.
Guided Installation for a Confident Repair: The 2004-2006 Colorado PCM
- Safety First: Begin by disconnecting the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On your 2004-2006 Colorado or Canyon, the PCM is typically located on the right-hand (passenger side) of the firewall in the engine bay.
- Disconnect the Harnesses: Carefully disengage the locking tabs on the electrical connectors and pull them straight out from the module. Avoid pulling on the wires themselves.
- Remove the Old Unit: Unbolt the old PCM from its mounting bracket. It’s usually held in place by a few small bolts.
- Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and securely fasten the bolts.
- Reconnect and Secure: Plug the electrical harnesses back into the new module. You should feel a solid click as they lock into place. Reconnect your battery’s negative terminal.
- Perform Security Relearn: Your truck’s anti-theft system may need to sync with the new PCM. A common procedure is the ’10-Minute Relearn.’ See our FAQ below for simple steps.
Tailored Fit for Your Ride
This module is a direct-fit replacement for a wide range of GM trucks and SUVs, ensuring seamless integration. Please verify your vehicle is on this list for guaranteed compatibility:
- Chevrolet Colorado: 2004-2006 (Electronic Control Module; RH firewall)
- GMC Canyon: 2004-2006 (Electronic Control Module; RH firewall)
- Hummer H3: 2006 (Electronic Control Module; RH firewall)
- Buick Rainier: 2006 (Electronic Control Module; 4.2L, LH engine)
- Chevrolet Trailblazer / EXT: 2006 (Electronic Control Module; 4.2L, LH engine)
- GMC Envoy / XL: 2006 (Electronic Control Module; 4.2L, LH engine)
- Isuzu Ascender: 2006 (Electronic Control Module; 4.2L, LH engine)
- Isuzu i-280: 2006 (Electronic Control Module; RH firewall)
- Isuzu i-350: 2006 (Electronic Control Module; RH firewall)
- Saab 9-7x: 2006 (Electronic Control Module; 6 cylinder, LH engine)
This unit 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.
Your Questions, Answered
Do I need to get this computer programmed?
No, you don’t! That’s the core of our service. We program the module to your vehicle’s specific VIN before we ship it. It arrives ready for installation and a quick security relearn procedure.
What is the security relearn procedure?
After installation, you may need to sync the new PCM with your truck’s anti-theft system. A common method is to turn the key to the ‘ON’ position (without starting the engine) for 10-12 minutes, or until the security light on the dash stops flashing. Then, turn the key off for 10 seconds. Repeat this cycle two more times. On the fourth try, the vehicle should start.
Is this part truly ‘plug and play’?
Yes, for the most part. Because we handle the programming, you won’t need any special scan tools. The only additional step for many owners is the simple security relearn procedure mentioned above, which requires no tools.
Where is the PCM located on my 2005 Colorado?
The PCM is mounted to the firewall on the passenger side of the engine compartment. It’s a silver metal box with several large electrical connectors attached.
What happens if I forget to provide my VIN?
We cannot ship your part without a VIN. The programming is essential for the module to communicate with your vehicle. We will contact you after your purchase to remind you, but providing it at checkout ensures the fastest possible processing and shipping.