Programmed 2006 Trailblazer PCM 12569773 | VIN Matched & Updated

End the Guesswork and Restore Your Ride’s Performance

Is your Trailblazer, Envoy, or Hummer H3 suffering from frustrating, intermittent issues? A nagging check engine light, poor fuel economy, rough idling, or even a no-start condition can often be traced back to a single, vital component: the Powertrain Control Module. As the central computer for your engine and transmission, its health is critical. This isn’t just a replacement part; it’s a direct-fit, VIN-programmed solution designed to get you back on the road with the confidence and reliability you deserve.

Is Your Vehicle Showing These Telltale Signs?

A failing PCM can manifest in numerous ways, often mimicking other sensor or component failures. If you’re experiencing any of the following, a faulty engine computer could be the culprit:

• ✔ Persistent Check Engine Light (CEL) with codes like P0601, P0602, P0606, or other internal processor faults.
• ✔ Unexplained drops in fuel efficiency.
• ✔ Rough or erratic engine idling and stalling.
• ✔ Harsh or delayed transmission shifting.
• ✔ The engine cranks but refuses to start.
• ✔ Communication errors with diagnostic scan tools.

Your Plug-and-Play Solution: The 2006 Trailblazer PCM

We take the complexity out of the repair. When you order, simply provide us with your vehicle’s VIN (Vehicle Identification Number). Our technicians will then flash this module with the latest, most stable software updates directly from GM. This ensures perfect compatibility and optimal performance, tailored specifically for your vehicle’s configuration. It arrives at your door ready for a straightforward installation, eliminating the need for an expensive trip to the dealership for programming.

Guided Installation to Restore Peace of Mind
1. Safety First: Begin by disconnecting the negative terminal of your vehicle’s battery to prevent any electrical shorts.
2. Locate the Module: On most compatible vehicles like the Trailblazer or Envoy, you’ll find the PCM in the engine bay, typically on the driver’s side near the firewall or inner fender.
3. Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be released. Once disconnected, unbolt the old module from its mounting bracket.
4. Install the New PCM: Mount your new, pre-programmed PCM securely onto the bracket. Reconnect the electrical harnesses, ensuring they click firmly into place.
5. Final Steps: Reconnect the vehicle’s battery. You will then need to perform a security relearn procedure (also known as a Passlock or anti-theft relearn), which pairs the new computer to your vehicle’s keys. Simple, step-by-step instructions for this process are included with your order.

A Mechanic’s Note: The ‘Ghost in the Machine’

I once had a 2006 Envoy in the shop that was driving its owner crazy. It would randomly stall at stoplights, but never threw a consistent code. The owner had replaced the crank sensor, the cam sensor, and even the fuel pump. After hours of diagnostics, we traced it to a hairline crack in the PCM’s circuit board that would only cause a fault when the engine bay reached a specific temperature. Installing a properly programmed 2006 Trailblazer PCM didn’t just fix the car; it restored the owner’s faith in their vehicle. That’s the peace of mind a reliable component provides.

Guaranteed Compatibility for Your Vehicle

This module is a direct replacement for part number 12569773 and is guaranteed to fit the following vehicles equipped with the specified engine options. It also interchanges with a wide range of part numbers, ensuring a perfect match.

• Buick Rainier: 2006 (4.2L)
• Chevrolet Colorado: 2004-2006
• Chevrolet Trailblazer & Trailblazer EXT: 2006 (4.2L)
• GMC Canyon: 2004-2006
• GMC Envoy & Envoy XL: 2006 (4.2L)
• Hummer H3: 2006
• Isuzu Ascender: 2006 (4.2L)
• Isuzu i-280: 2006
• Isuzu i-350: 2006
• Saab 9-7x: 2006 (6-cylinder)

Frequently Asked Questions