2004 – 2006 Chevrolet Colorado Powertrain Control Module (PCM) 19209821 – Programmed to Your VIN

Imagine you’re out on a weekend drive in your 2004-2006 Chevrolet Colorado, and suddenly the engine starts hesitating, or the check engine light flares up without warning. As a seasoned automotive repair advisor with over two decades in diagnostics and parts, I’ve seen this scenario play out countless times. It’s often tied to a faulty powertrain control module (PCM). Our pre-programmed PCM, part number 19209821, arrives ready for your vehicle, flashed with the latest GM updates using your VIN for a perfect match. This ensures seamless integration and restores optimal performance right away.

Key Features & Benefits

This PCM isn’t just a replacement—it’s tailored specifically for your ride. We program it post-purchase with your VIN, incorporating the newest GM software to address known glitches and enhance engine management. Benefits include improved fuel efficiency, smoother acceleration, and reliable operation under load, like when you’re hauling gear for a job site.

• Direct fit for easy swap-out, no need for additional coding at the shop.
• Supports multiple part numbers including 12569773, 12588650, and more, broadening compatibility.
• Resolves persistent DTCs such as P0606 (PCM processor fault) or P0300 (random misfire), based on common field reports.
• Enhances overall drivability, reducing rough idling and stalling during cold starts.

In my experience, owners notice a night-and-day difference in throttle response after installation, especially on those early morning commutes.

Common Issues & How This Fixes Them

Many 2004-2006 Colorado drivers face frustrating symptoms like intermittent no-start conditions or erratic transmission shifts. These often stem from a degraded PCM that’s accumulated errors over years of exposure to heat and vibration. For instance, if you’re towing a trailer up a hill and the engine bucks, it could signal PCM failure triggering codes like P2135 (throttle position sensor correlation).

This programmed unit fixes that by recalibrating sensors and actuators with updated firmware. Another frequent headache? Poor emissions performance leading to failed inspections—our PCM corrects fuel mixture imbalances, clearing issues like P0171 (system too lean). I’ve advised folks who’ve wasted time on spark plugs or sensors, only to find the PCM was the root cause. Replacing it restores factory-level control, preventing costly breakdowns.

Tip: Before swapping, scan for DTCs with an OBD-II tool. If you see P0601 (internal control module memory error), this is your solution. Always disconnect the battery to avoid shorts during install.

Easy Installation Guide

Swapping the PCM in your Colorado is straightforward for most DIYers. Locate it on the right-hand firewall, behind the glovebox area. Tools needed: basic socket set, screwdriver, and anti-static wrist strap to protect electronics.

1. Disconnect the negative battery terminal and wait 10 minutes.
2. Remove connectors from the old PCM carefully—label them if needed.
3. Bolt in the new unit, reconnect, and clear any stored codes with a scanner.
4. Test drive to confirm smooth operation; the system should relearn quickly.

Pro advice: If you’re not comfortable, a local mechanic can handle it in under an hour, saving you diagnostic fees.

Fitment Details

This PCM fits right into your 2004-2006 Chevrolet Colorado’s electronic control module slot on the RH firewall. It’s also compatible with similar models sharing GM’s platform, ensuring versatility if you’re working on a fleet.

Compatible with:

• 2004-2006 Chevrolet Colorado (RH firewall)
• 2004-2006 GMC Canyon (RH firewall)
• 2006 Buick Rainier (LH engine, 4.2L)
• 2006 Hummer H3 (RH firewall)
• 2006 Isuzu Ascender (LH engine, 4.2L)
• 2006 Isuzu i-280 and i-350 (RH firewall)
• 2006 Chevrolet TrailBlazer and EXT (LH engine, 4.2L)
• 2006 GMC Envoy and Envoy XL (LH engine, 4.2L)
• 2006 Saab 9-7X (LH engine, 6-cylinder, specific IDs)

Verify part numbers against your original; provide your VIN for precise programming and confirmation. This step guarantees no compatibility headaches.

Don’t let a failing PCM sideline your Colorado any longer. Order now, send us your VIN, and get back on the road with confidence—your engine will thank you!