Restore Peak Performance to Your GM Vehicle
Is your Chevrolet Venture, Pontiac Montana, or Buick Century running rough? A faulty Powertrain Control Module (PCM) is often the hidden culprit behind frustrating issues like poor fuel economy, erratic shifting, and a persistent Check Engine Light. As the central computer of your vehicle, the PCM governs everything from the fuel injectors to the transmission. When it fails, the symptoms can be confusing and widespread. This replacement PCM, part number 89017735, is the definitive solution to restore your vehicle’s factory performance and reliability.
We take the guesswork and high costs out of the repair process. Unlike a generic module from a parts store, this unit arrives at your door fully programmed to your vehicle’s specific VIN. We load the latest GM-certified software, ensuring complete compatibility and optimal function right out of the box. This means no expensive trips to the dealership for programming. For the professional mechanic, this is a time-saver that boosts bay throughput. For the DIY enthusiast, it’s the key to a successful and affordable repair.
A Technician’s Notebook: The Intermittent Stall Case
I had a 2004 Pontiac Montana in the bay that was a real head-scratcher. The owner complained of random stalling at stoplights and occasional hard shifting. No consistent codes were stored, just a history of random communication faults. We checked the fuel pressure, spark, and all the usual suspects—everything looked fine. On a hunch, I monitored the PCM’s live data streams. I noticed the processor would occasionally ‘hiccup,’ causing a momentary loss of communication with the transmission module. This pointed to an internal PCM failure. After installing a VIN-programmed module like this one, the stalling and shifting problems vanished completely. It’s a classic example of how a failing 2003-2005 Venture PCM can mimic other component failures.
Is Your GM Vehicle Showing These Signs?
- ✔ Persistent Check Engine Light (CEL)
- ✔ Diagnostic Trouble Codes (DTCs) for internal module failure, such as P0601, P0602, or P0606
- ✔ Unexplained drop in fuel mileage
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Engine stalling, stumbling, or refusing to start
- ✔ Failure to pass state emissions testing
- ✔ Communication errors with scan tools
Simple Installation to Get You Back on the Road
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the PCM: On most compatible models, the PCM is found in the engine compartment, typically on the driver’s side inside the air filter housing.
- ✔ Disconnect Connectors: Carefully unclip the wiring harness connectors from the old module. Inspect the pins for any corrosion or damage.
- ✔ Remove Old Module: Unbolt the old PCM from its mounting bracket and remove it from the vehicle.
- ✔ Install New Module: Secure the new, pre-programmed PCM onto the mounting bracket.
- ✔ Reconnect Everything: Firmly plug the wiring harnesses into the new module and reconnect the negative battery terminal.
- ✔ Perform Security Relearn: You will need to perform a simple key-on/key-off security relearn procedure. This takes about 30 minutes and requires no special tools. Instructions are readily available online for your specific model. This step is crucial for the vehicle to start.
Verified Fitment for Your General Motors Vehicle
This 2003-2005 Venture PCM is a direct-fit replacement for a wide range of GM vehicles. It is a reliable solution for the following models, but always confirm your original part number (12583827 or 12583826) for a perfect match.
- ✔ Alero: 2003-2004 (3.4L)
- ✔ Aztek: 2003-2005
- ✔ Bonneville: 2004-2005 (3.8L)
- ✔ Century: 2003-2005
- ✔ Grand Am: 2003-2005 (3.4L)
- ✔ Grand Prix: 2003 (3.1L)
- ✔ Impala: 2003-2005
- ✔ LeSabre: 2004-2005
- ✔ Malibu: 2003
- ✔ Monte Carlo: 2003-2005
- ✔ Montana: 2003-2005
- ✔ Park Avenue: 2004-2005
- ✔ Rendezvous: 2003-2005
- ✔ Silhouette: 2003-2004
- ✔ Venture: 2003-2005
Frequently Asked Questions
How does the VIN programming work?
After you place your order, you must provide us with your vehicle’s 17-digit VIN. We use this number to load the exact, latest GM-approved software for your specific vehicle configuration. This ensures the module works perfectly once installed.
Do I need to do anything after installing this PCM?
Yes. After installation, you must perform a standard GM security relearn procedure, also known as the Passlock or anti-theft relearn. This process syncs the new PCM with your vehicle’s anti-theft system and is required for the engine to start and run. It typically involves a sequence of turning the key on and off and takes about 30 minutes.
Is this part compatible with part number 12583827?
Yes, this module is a direct replacement and is fully compatible with original GM part numbers 12583827 and 12583826.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM controls the transmission’s shift points and line pressure. If your transmission issues are caused by a faulty PCM, this part will resolve them. However, it will not fix mechanical issues within the transmission itself.
What if I don’t provide my VIN?
We cannot ship your order without a VIN. The programming is essential for the part to function in your vehicle. We will contact you after your purchase to obtain this information to prevent any delays.