Is Your Vehicle Running Rough or Stalling?
If your 1999 Pontiac Trans Sport, or another compatible GM vehicle, is suffering from inconsistent performance, a persistent Check Engine Light, or even a no-start condition, a failing Powertrain Control Module (PCM) could be the culprit. As the central computer for your engine and transmission, the PCM is responsible for managing everything from fuel mixture and ignition timing to transmission shift points. When it fails, it can cause a wide range of frustrating and difficult-to-diagnose issues. This genuine OEM Powertrain Control Module, part number 09361735, is the direct-fit solution to restore your vehicle’s reliability and performance.
From the Diagnostic Bay
We had a 1999 Buick LeSabre come into the shop with a complaint of intermittent stalling at stoplights and a check engine light that would come and go. The customer had already replaced the spark plugs, wires, and a few sensors with no luck. After hooking up our scanner, we noticed some erratic data from the crankshaft position sensor, but the sensor itself tested fine. This pointed us toward the PCM. We swapped in a programmed module, and the car ran perfectly. The internal processing of the original PCM had degraded, causing it to misinterpret sensor data under certain conditions. This highlights why simply replacing parts isn’t always the answer and how a correctly functioning, programmed PCM is critical.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling or shutting off unexpectedly.
- ✔ Rough or erratic idling.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh or incorrect transmission shifting.
- ✔ Misfires or hesitation during acceleration.
- ✔ Complete no-start condition where the engine cranks but won’t fire.
- ✔ Communication errors with diagnostic scan tools.
Why Choose Our Programmed 1999 Trans Sport PCM?
Getting the right part is only half the battle. A PCM for a modern vehicle isn’t a simple plug-and-play component. It must be specifically programmed with your vehicle’s unique Vehicle Identification Number (VIN) to function correctly. Our service eliminates the guesswork and the need for expensive dealership programming. We take this quality, used OEM module and flash it with the latest GM-certified software updates for your exact vehicle. This ensures all factory parameters for your engine, transmission, and emissions systems are correctly loaded, providing a seamless installation and restoring original factory performance.
This module is a cost-effective alternative to a new dealership part without sacrificing quality. Sourced from a salvaged vehicle, each unit is carefully inspected to ensure it’s ready for service in your car. By providing us with your VIN at checkout, you receive a module that is ready to be installed right out of the box, saving you time, money, and the headache of a trip to the dealer.
Guaranteed Fitment for a Wide Range of GM Vehicles
This Electronic Control Module (part number 09361735) is a direct replacement for a variety of GM cars and vans. Please verify your vehicle is on the list below:
- Bonneville: 1999, 2000 (3.8L VIN K)
- Century: 1999
- Cutlass: 1999 (ID 9361735)
- Eighty Eight: 1999
- Grand Prix: 1999, 2000 (3.8L w/supercharged option)
- Impala: 2000 (3.4L & 3.8L)
- Intrigue: 1999
- LeSabre: 1999-2000
- Lumina Car: 1999
- Malibu: 1999 (3.1L)
- Monte Carlo: 1999-2000
- Montana: 1999
- Park Avenue: 1999
- Regal: 1999
- Riviera: 1999
- Silhouette: 1999
- Trans Sport: 1999
- Venture: 1999
Frequently Asked Questions
Do I need to get this computer programmed?
No. We handle the programming for you before the item ships. Simply provide your vehicle’s VIN during or after checkout, and we will flash the module with the correct software for your specific car.
What is a VIN and why do you need it?
The VIN, or Vehicle Identification Number, is a unique 17-digit code for your car. It contains specific information about your vehicle’s make, model, engine, and factory options. We use the VIN to load the precise software and calibrations from GM, ensuring the PCM works perfectly with your vehicle’s systems.
Is this a new part?
This is a high-quality, used OEM part that has been sourced from a salvaged vehicle. Each unit is inspected to ensure it is fully functional and ready for programming and installation in your vehicle.
Will I need to do anything after installing the PCM?
In many cases, you may need to perform a simple security relearn procedure, often called a Passlock or Passkey relearn. This procedure syncs the new PCM with your vehicle’s anti-theft system and can typically be done without special tools. Instructions are widely available online, or you can consult your vehicle’s service manual.
How can I be sure this fits my vehicle?
The best way to ensure compatibility is to match the part number (09361735) from your old module to this one. You can also use the detailed fitment list provided on this page. If you are still unsure, please contact us with your VIN, and we can verify the fitment for you.