Restore Your Envoy’s Heartbeat and Drive with Confidence
Is your 2006 GMC Envoy running rough, hesitating, or refusing to start? A persistent check engine light and confusing error codes can turn a vehicle you rely on into a source of daily stress. The Powertrain Control Module (PCM) is the brain of your vehicle, orchestrating everything from fuel injection to transmission shifts. When it fails, the symptoms can be frustrating and widespread. This isn’t just an inconvenience; it’s a matter of reliability and peace of mind. You deserve a straightforward solution that gets you back on the road without expensive dealership visits or complex procedures.
This module is the definitive answer. It arrives at your door meticulously programmed to your vehicle’s specific Vehicle Identification Number (VIN). We handle the complex part, loading the latest GM software updates so you can perform the repair with confidence. Forget about towing your truck to a shop for programming—this is a direct-fit, plug-and-drive solution designed to restore your vehicle’s original performance and efficiency.
Warning Signs and How to Overcome Them
If you’re experiencing any of the following, a failing PCM could be the culprit. This module is designed to resolve these exact issues:
- ✔ Unexplained stalling or rough idling that makes driving unpredictable.
- ✔ A persistent Check Engine Light that won’t go away.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0601, P0606, or other internal controller errors.
- ✔ Poor fuel economy, costing you money at the pump.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Complete no-start condition where the engine cranks but won’t fire up.
- ✔ Communication errors with diagnostic scan tools.
Effortless Steps for a Confident Fix
Installing your new 2006 Envoy Powertrain Control Module is a manageable job for a DIY enthusiast. Follow these steps for a smooth installation and regain control of your vehicle’s performance.
- Safety First: Before you begin, disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts. This is a crucial first step for any automotive electrical work.
- Locate the Module: On your 2006 Envoy, the PCM is typically found in the engine bay, on the driver’s side, near the air filter box. It’s a silver metal box with several large electrical connectors.
- Disconnect the Old Unit: Carefully unplug the electrical harnesses from the old PCM. These connectors have locking tabs that may need to be squeezed or lifted to release. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed PCM onto the bracket and securely tighten the bolts. Reconnect the electrical harnesses, ensuring they click firmly into place. A secure connection is vital for proper function.
- Reconnect and Verify: Reattach the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) for about 15 seconds to allow the system to initialize. Start your engine and enjoy the restored performance and peace of mind.
An Expert’s Note on Diagnostics
“I once had a customer bring in a Trailblazer with a random stalling issue that three other shops couldn’t solve. They had replaced sensors and even the fuel pump. After a quick data stream analysis, I noticed the PCM was intermittently dropping communication. The root cause wasn’t a faulty sensor, but the brain itself failing under load. Installing a properly programmed PCM solved the problem in under an hour. It’s a powerful reminder that starting with the central controller can save you hundreds in unnecessary parts and labor.”
Tailored Fit for Your Ride
This module is a direct replacement for a wide range of GM trucks and SUVs. While it is a perfect 2006 Envoy Powertrain Control Module, please verify your vehicle is on the list below to ensure a perfect match. We program the unit based on the VIN you provide, guaranteeing compatibility.
- 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 & i-350: 2006
- Saab 9-7x: 2006 (6 cylinder)
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.
Frequently Asked Questions
Do I need to do any programming myself?
Absolutely not. We handle all the programming before shipping. You just need to provide your vehicle’s VIN at checkout, and the module will arrive ready to install. It’s a true plug-and-drive solution.
What is a VIN and where do I find it?
The VIN (Vehicle Identification Number) is a unique 17-digit code for your specific vehicle. You can easily find it on your driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this fix my specific problem?
This module is the definitive solution for issues originating from a faulty PCM, such as internal processor errors (P0601), stalling, and communication failures. While it resolves a wide range of problems, we always recommend a proper diagnosis to confirm the PCM is the root cause before ordering.
Is any other procedure required after installation?
In most cases, no. After installation, the vehicle will start and run correctly. Some vehicles may require a Crankshaft Variation Relearn procedure (also known as CASE Relearn) to clear a P1336 code, which can be done with a capable bidirectional scan tool. This is a simple procedure for any qualified mechanic.
How do I send you my VIN?
After you complete your purchase, you will receive instructions on how to send us your VIN. We cannot program and ship your module until we receive this information, so please provide it promptly to avoid delays.