Restore Your Vehicle’s Heartbeat and Your Peace of Mind
There’s nothing more frustrating than a vehicle that won’t cooperate. The stalling, the hesitation, the persistent glow of the check engine light—it all adds up to stress and uncertainty. Your vehicle’s Powertrain Control Module (PCM) is its brain, and when it falters, the entire system suffers. This isn’t just an inconvenience; it’s a matter of reliability and safety. We understand that you need a solution that is not only effective but also straightforward. That’s why we offer this professionally programmed PCM, flashed with the latest GM software specifically for your vehicle’s VIN. It’s the direct path to restoring the smooth, dependable performance you remember.
Signs Your Engine’s Brain Needs Attention
A failing PCM can manifest in a variety of confusing ways. If you’re experiencing any of the following, this module is the definitive solution to get you back on the road with confidence.
- ✔ Check Engine Light: Persistent illumination, especially with codes like P0601, P0602, P0605, or P0606.
- ✔ Poor Performance: Noticeable loss of power, rough idling, or engine stumbling during acceleration.
- ✔ Reduced Fuel Economy: Your vehicle is suddenly consuming more fuel than usual due to incorrect engine parameters.
- ✔ Intermittent Stalling: The engine cuts out unexpectedly, either while driving or at a stop.
- ✔ No-Start Condition: The engine cranks but refuses to start, often due to a lack of fuel or spark commands from the PCM.
- ✔ Harsh Shifting: The transmission may shift erratically or harshly as it’s not receiving the correct signals from the engine controller.
Guided Installation for a Confident Repair
Replacing your PCM doesn’t have to be an intimidating task. We’ve designed this to be as close to a plug-and-play experience as possible. Follow these steps to restore your vehicle’s proper function.
- Safety First: Begin by disconnecting the negative terminal of your vehicle’s battery to prevent any electrical shorts.
- Locate the Old Module: On most compatible models like the Trailblazer or Envoy, the PCM is located in the engine bay, typically on the driver’s side.
- Disconnect and Remove: Carefully unplug the wiring harness connectors. They have locking tabs that need to be released. Once disconnected, unbolt the old module from its mounting bracket.
- Install the New PCM: Mount your new, pre-programmed PCM in the same location. Securely reconnect the wiring harnesses, ensuring the locking tabs click into place.
- Reconnect Power: Reattach the negative battery terminal.
- Final Steps: In most cases, you’re ready to go. Some vehicles may require a simple security relearn procedure, which can often be done without special tools. Instructions are readily available online or in your service manual.
An Expert’s Word of Advice
“Before you plug in your new PCM, take a moment to inspect the harness connectors. Look for any signs of corrosion, moisture, or bent pins. A poor connection is one of the most common causes of repeat module failure. A quick spray with an electronics-safe contact cleaner can save you a world of headaches down the road. A clean connection ensures the new brain can communicate perfectly with the rest of your vehicle from the very first start.”
Tailored Fit for Your GM Vehicle
This module is a direct replacement for a wide range of vehicles, ensuring a perfect fit and function. Please verify your model and year from the list below. 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.
- Chevrolet Colorado (2004-2006)
- GMC Canyon (2004-2006)
- GMC Envoy (2006, 4.2L)
- GMC Envoy XL (2006, 4.2L)
- Chevrolet Trailblazer (2006, 4.2L)
- Chevrolet Trailblazer EXT (2006, 4.2L)
- Buick Rainier (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)
Your Questions Answered
Frequently Asked Questions
What does ‘VIN Programmed’ mean?
It means we flash the module with your vehicle’s unique Vehicle Identification Number (VIN) and the latest factory software from GM. This ensures the PCM recognizes your vehicle’s specific options, engine parameters, and security system, making installation much simpler than using a generic, unprogrammed unit.
How do I provide my VIN?
After you complete your purchase, you can send us a message with your 17-digit VIN. We cannot ship your order until we receive this information, as the programming is a critical part of the process.
My original part number isn’t on the list, but my vehicle is. Will this work?
Our listed part numbers cover the most common original parts this module replaces. As long as your vehicle’s make, model, year, and engine match our compatibility list, this programmed module will function correctly as the proper replacement for your vehicle.
Will I need to take my vehicle to a dealer after installation?
In most cases, no. Because the unit arrives programmed to your VIN, it eliminates the need for expensive dealership programming. Some vehicles may require a simple ‘security relearn’ or ‘CASE learn’ procedure, which can typically be performed by the owner without special tools.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM plays a crucial role in controlling transmission shift points and line pressure. If the module is sending incorrect data, it can cause erratic shifting. Replacing a faulty 2006 Envoy PCM often resolves these related transmission symptoms.