Restore Your Vehicle’s Brain and Get Back on the Road with Confidence
If you’re dealing with frustrating and unpredictable issues like your 2006-2007 Buick Rendezvous stalling, shifting erratically, or showing a persistent Check Engine Light, the root cause is often the very component that controls it all: the Powertrain Control Module (PCM). As a technician with over two decades of experience under the hood, I’ve seen firsthand how a failing PCM can turn a reliable vehicle into a source of constant headaches. This isn’t just a part; it’s the central command center for your engine and transmission.
This replacement Rendezvous Powertrain Module, part number 19210070, is the definitive solution to these complex electronic problems. We take the guesswork and extra cost out of the repair by programming the module specifically to your vehicle’s Vehicle Identification Number (VIN) before we ship it. This means it arrives loaded with the latest factory software from GM, ready for a straightforward installation. You get a component that communicates flawlessly with your vehicle’s other systems, restoring the smooth performance and reliability you depend on.
Is Your Vehicle Showing These Signs of PCM Failure?
- ✔ Persistent Check Engine Light (CEL) that won’t go away.
- ✔ Diagnostic Trouble Codes (DTCs) stored for internal module failure, such as P0601, P0602, or P0606.
- ✔ The engine cranks but refuses to start, or starts and immediately stalls.
- ✔ Noticeable decrease in fuel economy for no apparent reason.
- ✔ Harsh, erratic, or delayed automatic transmission shifting.
- ✔ The vehicle fails an emissions or smog test.
- ✔ Unexplained engine stumbling, misfiring, or hesitation during acceleration.
Case Study: A Tricky Diagnosis
I remember a 2006 Chevy Uplander—which uses this exact same PCM—that came into the bay with a maddeningly intermittent stalling problem. The owner had been to two other shops that couldn’t find the issue because it only happened after driving for 30-40 minutes. No codes were stored. On a hunch, after verifying fuel pressure and spark were good, I used a heat gun to carefully warm the PCM while the engine was idling. Within two minutes, the engine sputtered and died. The internal circuits were failing under heat stress. We installed a VIN-programmed module just like this one, and the customer called back a week later, thrilled that his van was finally dependable again. These intermittent issues are classic signs of a failing Rendezvous Powertrain Module.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental reconnection.
- ✔ Locate the PCM: On most of these GM vehicles, including the Rendezvous, the PCM is located in the left-hand (driver’s side) front of the engine compartment, often near the air filter housing.
- ✔ Disconnect the Old Module: Carefully release the locking tabs and unplug the electrical connectors from the old PCM. They are often color-coded or keyed, so they can only go back in one way.
- ✔ Swap the Modules: Unbolt the old module from its mounting bracket and set it aside. Mount the new module securely in its place.
- ✔ Reconnect and Secure: Plug the electrical connectors firmly into your new Rendezvous Powertrain Module. Ensure the locking tabs click into place for a secure connection.
- ✔ Reconnect Battery: Reattach the negative battery terminal.
- ✔ Perform Security Relearn (If Needed): Some GM vehicles require a security relearn procedure to recognize the new PCM. This can typically be done without special tools: Turn the key to the ‘ON’ position (don’t start) for 10-15 minutes, then turn it ‘OFF’ for 10 seconds. Repeat this cycle three times. On the fourth try, the vehicle should start.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the following vehicles and configurations. Please verify your vehicle is on this list to ensure proper function. This part corresponds to service numbers 12600928 and 19210070.
- ✔ 2006-2007 Buick Rendezvous (with 3.5L engine)
- ✔ 2006 Pontiac G6 (with ID 12600928)
- ✔ 2006 Buick Terraza (with 3.5L engine)
- ✔ 2006 Chevrolet Malibu (with 3.5L engine)
- ✔ 2006 Pontiac Montana SV6 (with 3.5L engine)
- ✔ 2006 Chevrolet Uplander (with 3.5L engine)
- ✔ 2006 Pontiac Torrent
- ✔ 2006 Chevrolet Equinox
Frequently Asked Questions
What exactly is a Powertrain Control Module (PCM)?
The PCM is your vehicle’s main computer, responsible for managing engine and transmission functions. It controls everything from fuel injection and ignition timing to emission systems and automatic transmission shift points to ensure optimal performance and efficiency.
Why do I need to provide my VIN?
Your VIN is essential because it allows us to program the module with the precise software and calibrations for your vehicle’s specific options and features. This ensures it works perfectly right out of the box, eliminating the need for a costly trip to the dealership for programming.
Is this part difficult to install for a DIYer?
For someone with basic mechanical skills, this is a very manageable job. It primarily involves disconnecting the battery, unplugging a few connectors, and swapping the physical module. The most important part is the potential need for a simple key-cycle security relearn, which requires no special tools.
Will this fix my check engine light?
If the check engine light is caused by an internal PCM failure (like codes P0601-P0606) or a fault the PCM is causing, then yes, this part will resolve the issue. However, you should always ensure other potential causes like faulty sensors have been ruled out.
What is the difference between a PCM and an ECM?
The terms are often used interchangeably. ECM stands for Engine Control Module, while PCM (Powertrain Control Module) typically means the computer controls both the engine and the transmission. For most modern vehicles like your Rendezvous, PCM is the more accurate term.