Restore Peak Performance to Your GM Vehicle
Is your 1998-2000 Oldsmobile Bravada or another GM truck/van running rough, stalling unexpectedly, or showing a persistent Check Engine Light? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. A faulty PCM can cause a cascade of frustrating issues, from poor fuel economy and erratic shifting to a complete no-start condition. Don’t let a bad module keep you off the road. This replacement PCM is the reliable, straightforward solution you need.
We take the guesswork and hassle out of the repair. Unlike a generic part from a salvage yard, this module comes professionally programmed with the latest official GM software updates. All we need is your vehicle’s VIN. This ensures that the engine and transmission parameters are perfectly matched to your specific vehicle, restoring its original performance and efficiency. This is the most critical step, and we handle it for you before the part even ships.
Case Study: A Tricky Diagnosis
I remember a 1999 Bravada that came into the shop with a complaint that stumped two other mechanics. The owner described intermittent stalling at stoplights and a transmission that would sometimes refuse to shift out of second gear. No consistent codes were stored, just a history of random communication errors. After verifying the wiring harness and grounds were solid, we focused on the PCM. On the surface, it seemed fine, but under load and once it heated up, the internal processor would fault. We installed one of our VIN-programmed PCMs, and the gremlins vanished. The customer called a week later, thrilled that his Bravada drove like new again. It’s often the central component that causes the most elusive problems.
Is Your Bravada Showing These Signs of PCM Failure?
If you’re experiencing any of the following, a failing PCM is a likely culprit. As a technician, these are the symptoms I see most often:
- ✔ Unexplained Check Engine Light (CEL)
- ✔ Diagnostic Trouble Codes (DTCs) for internal module failure (e.g., P0601, P0602, P0605)
- ✔ Engine stalling, stumbling, or rough idling
- ✔ Vehicle won’t start, or starts intermittently
- ✔ Harsh or incorrect transmission shifting
- ✔ Noticeable decrease in fuel mileage
- ✔ Failure to communicate with a diagnostic scan tool
A Straightforward Guide to Your PCM Replacement
Installing your new 1998-2000 Bravada PCM is a manageable job for a DIYer with basic tools. On this model, the PCM is typically located in the engine bay on the right-hand (passenger) side. Always consult a repair manual for your specific vehicle’s location.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental contact.
- Locate the PCM: Find the module in the engine compartment. It’s a metal box with several large electrical connectors.
- Disconnect the Connectors: Carefully unlatch and remove all electrical harness connectors from the old PCM. Inspect them for any corrosion or damage.
- Remove the Old Module: Unbolt the PCM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed PCM onto the bracket and secure it.
- Reconnect Everything: Firmly plug the electrical connectors into the new module until they click into place. Reconnect your negative battery terminal.
- Perform a Relearn (If Necessary): While not always required after a battery disconnect, you may need to perform a security or crank-sensor relearn procedure. For many of these vehicles, simply turning the key to the ‘ON’ position for 10-15 minutes before starting can help the systems sync.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 16263494, 16265035, 8162634940, 218-11787, and 21811787. It fits a wide range of GM trucks and vans. Please verify your part number and check the list below. If your vehicle is on the list, this is the correct part for you.
Fits select models of: Oldsmobile Bravada (98-00), Chevrolet S10/Blazer (98-00), GMC Jimmy/Sonoma (98-00), Isuzu Hombre (98-00), GMC Envoy (98-00), Chevrolet Astro/GMC Safari (99-01), Chevrolet & GMC Full-Size Pickups & Vans (99-02), Cadillac Escalade (99-00), and more with compatible engines and part numbers. Please use the compatibility tool to confirm your exact vehicle.
Why do I need to provide my VIN?
Your VIN (Vehicle Identification Number) is essential for us to program the PCM with the correct software for your vehicle’s specific engine, transmission, and options. This ensures perfect compatibility and performance, eliminating the need for a costly trip to the dealership.
Is this PCM difficult to install?
No, for most DIYers with basic tools, this is a straightforward replacement. The module is typically easy to access in the engine bay. Our step-by-step guide above outlines the simple process.
Will this fix my Check Engine Light?
If the Check Engine Light is on due to an internal failure of your original PCM (like code P0601), then yes, this replacement module will resolve the issue and allow the light to be cleared.
What happens after I place my order?
After you purchase the PCM, simply reply to your order confirmation email with your vehicle’s 17-digit VIN. We will program the module and typically ship it within one business day. It arrives ready to install.
Does this part require any additional programming after installation?
No. Because we program it to your VIN before shipping, it is a plug-and-play solution. In some rare cases, a security relearn procedure may be needed, which can usually be done without special tools.