Is Your GM Vehicle Experiencing Engine Problems?
A failing Powertrain Control Module (PCM), often called the engine computer, can be the source of countless frustrating and difficult-to-diagnose issues in your 1999 Oldsmobile Silhouette or other compatible GM vehicle. As the central command center for your engine and transmission, a faulty PCM can cause everything from poor fuel economy and rough idling to a complete no-start condition. This can leave you stranded and facing a costly repair bill from a dealership. This genuine used GM PCM, part number 09361735, is the reliable and affordable solution to restore your vehicle’s performance and get you back on the road with confidence.
This isn’t just a part in a box. We provide a comprehensive service. Before this module ships, our technicians will program it specifically to your vehicle’s Vehicle Identification Number (VIN). This critical step ensures that the computer has the correct software and calibrations for your engine, transmission, and specific options. It’s flashed with the latest updates available from GM, ensuring optimal performance and efficiency. This plug-and-play approach saves you a trip to the dealer and the expensive programming fees they charge.
From the Diagnostic Bay
We had a 1999 Pontiac Grand Prix come into the shop with a classic intermittent no-start condition. The owner had already replaced the battery, alternator, and crank sensor with no luck. The check engine light was on, but the codes were erratic and inconsistent. After checking the wiring harness for shorts, we suspected the PCM. A quick swap with one of our pre-programmed 09361735 units solved the problem instantly. The car started every time, and the engine ran smoothly. These intermittent electrical gremlins are a hallmark of a failing internal PCM component, and replacing the unit is often the only definitive fix.
Symptoms of a Failing Engine Computer
If you’re experiencing any of the following issues, a faulty PCM could be the culprit. A failing 1999 Silhouette PCM can manifest in various ways, making diagnosis tricky. Look out for these common warning signs:
- ✔ Check Engine Light is illuminated, often with communication-related error codes (U-codes) or multiple, seemingly unrelated sensor codes.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or erratic idling.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ The vehicle won’t start, or it starts and then immediately stalls.
- ✔ Harsh or incorrect automatic transmission shifting.
- ✔ The engine cranks but will not fire up (no spark or no fuel injector pulse).
- ✔ Cooling fans not turning on, leading to overheating.
Your Direct-Fit Programmed Solution
This module is a genuine used part, carefully sourced from a salvaged vehicle and inspected for quality. By choosing a used component, you get an original equipment part’s reliability without the high cost of a new unit. Our programming service adds significant value, making the installation process as simple as possible for you or your mechanic. Simply provide your VIN after purchase, and we handle the rest. The module you receive will be ready to install, tailored specifically for your car.
Guaranteed Fitment for Your Vehicle
This 1999 Silhouette PCM is compatible with a wide range of General Motors vehicles from the era. Please carefully review the list below to confirm that this part is the correct one for your car. Matching the part number 09361735 is crucial for ensuring compatibility.
GRAND PRIX 99 Electronic Control Module; (LH engine compartment)
BONNEVILLE 99 Electronic Control Module; (LH engine compartment)
CUTLASS 99 Electronic Control Module; (LH center dash), ID 9361735
INTRIGUE 99 Electronic Control Module; (LH engine compartment)
RIVIERA 99 Electronic Control Module; (RH dash)
SILHOUETTE 99 Electronic Control Module; (LH engine compartment)
VENTURE 99 Electronic Control Module; (LH engine compartment)
IMPALA 00 Electronic Control Module; (LH engine compartment), 3.8L
MONTANA 99 Electronic Control Module; (LH engine compartment)
BONNEVILLE 00 Electronic Control Module; (LH engine compartment), 3.8L (VIN K, 8th digit)
CENTURY 99 Electronic Control Module; (LH engine compartment)
PARK AVENUE 99 Electronic Control Module; (LH front engine compartment)
TRANS SPORT 99 Electronic Control Module; (Canada, LH front engine compartment)
LUMINA CAR 99 Electronic Control Module; (LH engine compartment)
REGAL 99 Electronic Control Module; (LH engine compartment)
GRAND PRIX 00 Electronic Control Module; (LH engine compartment), 3.8L, w/supercharged option, w/PCM (opt K29)
IMPALA 00 Electronic Control Module; (LH engine compartment), 3.4L
MALIBU 99 Electronic Control Module; (LH dash), 3.1L
LESABRE 99-00 Electronic Control Module; (LH front engine compartment)
MONTE CARLO 99-00 Electronic Control Module; (LH engine compartment)
Frequently Asked Questions
Do I need to program this PCM?
No. We program the module to your vehicle’s specific VIN before we ship it. It arrives ready for installation.
What information do you need from me?
After you complete your purchase, you must provide us with your 17-digit Vehicle Identification Number (VIN). This is essential for the programming service.
Is this a new part?
This is a high-quality, tested used part sourced from a salvaged vehicle. This allows us to offer a genuine GM part at a significant discount compared to a new unit.
Will I need to perform a security relearn procedure?
Yes, on most GM vehicles of this era, you will need to perform a simple security relearn procedure after installation. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating this cycle three times. This allows the new PCM to synchronize with your vehicle’s anti-theft system.
How do I find my vehicle’s VIN?
Your VIN can be found on a metal plate on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this part fix my vehicle’s problem?
This PCM will resolve any issues directly caused by a faulty engine computer. However, it is crucial that your vehicle has been properly diagnosed. This part will not fix problems related to other faulty sensors, wiring, or mechanical components.