Is your 2003-2004 Oldsmobile Silhouette running poorly, stalling, or displaying a persistent check engine light? These are classic signs of a failing Powertrain Control Module (PCM), the central computer responsible for managing your vehicle’s engine and transmission. A faulty PCM can lead to a cascade of frustrating issues, including poor fuel economy, erratic shifting, and even a no-start condition. Don’t let a bad module keep your reliable minivan off the road. This direct-fit PCM, part number 89017735, is the definitive solution to restore your vehicle’s performance, drivability, and reliability.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork and extra expense out of the repair process. Upon purchase, simply provide us with your vehicle’s VIN (Vehicle Identification Number). Our technicians will then program the module with the latest, most stable software updates directly from GM, ensuring it is perfectly matched to your Silhouette’s specific configuration. This critical programming step means the module arrives at your door ready for a straightforward installation, eliminating the need for an expensive trip to the dealership for flashing or coding.
From the Diagnostic Bay
We had a 2004 Montana (which uses the same platform as the Silhouette) come into the shop with a complaint of intermittent stalling and a harsh 1-2 shift. The owner had already replaced the throttle position sensor and the mass air flow sensor, spending hundreds on parts that didn’t fix the problem. After hooking up our scanner, we noticed erratic data readings from multiple sensors that didn’t make sense. This pointed us directly to the PCM. Instead of continuing to chase phantom sensor codes, we installed a VIN-programmed module. The harsh shifting vanished, the engine idled smoothly, and the stalling issue was completely resolved. It’s a classic case where the ‘brain’ was the problem, not the ‘senses’.
Diagnosing Your 2003-2004 Silhouette PCM
A failing powertrain module can manifest in various ways, often mimicking other component failures. If you’re experiencing any of the following symptoms, your PCM is the likely culprit. This unit is the correct solution for restoring proper function and clearing persistent diagnostic trouble codes (DTCs) related to module failure.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with various, often unrelated, trouble codes.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or inconsistent idling.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The vehicle cranks but refuses to start.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Failure to pass state emissions testing.
Simple Installation Process
This module is designed for a direct-fit installation. It is located in the left-hand (driver’s side) engine compartment. The process typically involves disconnecting the battery, unplugging the electrical connectors from the old module, unbolting it, and then installing the new one in the reverse order. Once installed and the battery is reconnected, you may need to perform a security relearn procedure, which can often be done without special tools. This ensures your vehicle’s anti-theft system recognizes the new module. Our pre-programming service handles the most complex part of the job, making the physical swap manageable for a competent DIY mechanic or any professional technician.
Guaranteed Compatibility
This module is a direct replacement for part number 89017735 and is also compatible with part numbers 12583827 and 12583826. It fits a wide range of GM vehicles, including:
- Oldsmobile Silhouette: 2003-2004
- Buick Century: 2003-2005
- Buick LeSabre: 2004-2005
- Buick Park Avenue: 2004-2005
- Buick Rendezvous: 2003-2005 (with ID 12583827)
- Chevrolet Impala: 2003-2005
- Chevrolet Malibu: 2003 (with ID 12583827)
- Chevrolet Monte Carlo: 2003-2005
- Chevrolet Venture: 2003-2005
- Oldsmobile Alero: 2003-2004 (3.4L)
- Pontiac Aztek: 2003-2005
- Pontiac Bonneville: 2004-2005 (3.8L)
- Pontiac Grand Am: 2003-2005 (3.4L)
- Pontiac Grand Prix: 2003 (3.1L, with ID 12583827)
- Pontiac Montana: 2003-2005
Frequently Asked Questions
What is a PCM and what does it do?
The Powertrain Control Module (PCM) is your vehicle’s main computer. It controls all aspects of engine and transmission operation, including fuel injection, ignition timing, emissions systems, and shift points to ensure optimal performance and efficiency.
Do I need to program this module?
No. This module comes fully programmed to your vehicle. After you place your order, you will need to provide us with your VIN. We use this to load the correct GM software and calibrations, so it’s ready for installation right out of the box.
Where is the PCM located on my 2003-2004 Silhouette?
On the Oldsmobile Silhouette and most of its platform mates like the Venture and Montana, the PCM is located in the engine bay on the driver’s side, typically near the air filter housing.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the original PCM, then yes, this replacement part will resolve the issue and allow the light to be cleared. It’s crucial to ensure other vehicle components, like sensors, are functioning correctly as well.
What is a security relearn procedure?
A security relearn, sometimes called a Passlock relearn on GM vehicles, syncs the new PCM with your vehicle’s anti-theft system. It’s a simple procedure that usually involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times. Instructions are widely available online for your specific model.
How do I provide my VIN after purchase?
After you complete your purchase, we will contact you via email for your 17-digit Vehicle Identification Number (VIN). You can also send it to us through the platform’s messaging system with your order number. We cannot ship the module until we have programmed it with your VIN.