Is your 1998-2000 Oldsmobile Bravada suffering from baffling engine issues like stalling, erratic shifting, a persistent check engine light, or a no-start condition? The Powertrain Control Module (PCM), the central computer of your vehicle, is often the culprit. It governs everything from fuel injection and ignition timing to transmission shift points. When it fails, it can cause a cascade of problems that are frustrating and difficult to diagnose. This replacement PCM is the definitive solution to restore your vehicle’s performance, reliability, and drivability.
This isn’t just a replacement part; it’s a complete service. We program the module specifically for your vehicle using your unique Vehicle Identification Number (VIN). This critical step ensures that the PCM has the correct software and calibrations for your Bravada’s specific engine, transmission, and options. We install the latest official GM software updates, which can resolve bugs and improve performance over the original factory programming. This eliminates the need for an expensive trip to the dealership for programming, saving you time and money.
Solving Problems with a 1998-2000 Bravada PCM
A failing 1998-2000 Bravada PCM can manifest in numerous ways. You might be chasing what seems like a sensor or fuel system issue, only to find the root cause lies within the vehicle’s main computer. By replacing your old or faulty unit with this pre-programmed module, you are addressing the core of your vehicle’s electronic management system. This ensures all engine and transmission parameters are operating exactly as the manufacturer intended, leading to smoother idling, responsive acceleration, and correct automatic transmission operation.
We had a 1999 GMC Jimmy, which uses this exact same PCM, come into the shop with a frustrating intermittent stalling problem. The owner had already replaced the fuel pump and ignition coil based on advice from forums. The truck would run fine for days, then suddenly die at a stoplight. Our initial scans showed no hard codes, but live data monitoring revealed that the PCM would momentarily lose communication with the crankshaft position sensor right before a stall. Instead of a faulty sensor, it was the PCM’s internal processor failing under heat. We installed one of these VIN-programmed PCMs, performed the security relearn, and the stalling issue was completely resolved. It’s a classic case of the ‘brain’ causing symptoms that point elsewhere.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with various codes
- ✔ Engine stalling or cutting out unexpectedly
- ✔ Rough or unstable idle
- ✔ Poor fuel economy
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Failure to start, even with a good battery and starter
- ✔ Loss of communication with diagnostic scan tools
This module is a direct replacement for multiple part numbers, including 16263494, 16265035, and 8162634940. It also fits an extensive range of GM trucks and vans from the same era, such as the Chevrolet S10, Blazer, Silverado, Express, GMC Sonoma, Jimmy, Sierra, Savana, and more. Please verify the part number and use our detailed fitment list to ensure compatibility. Installation is straightforward for a DIY mechanic, though a simple security relearn procedure will be necessary after installation to sync the new module with your vehicle’s anti-theft system.
Frequently Asked Questions
Do I need to get this PCM programmed?
No. We handle all the programming for you before shipment. Simply provide us with your vehicle’s 17-digit VIN during or after checkout, and we will flash the module with the correct GM software for your specific vehicle.
Where is the PCM located on my 1998-2000 Bravada?
On the Oldsmobile Bravada, GMC Jimmy, and Chevrolet Blazer from this generation, the Powertrain Control Module is typically located in the engine bay, on the right-hand (passenger) side, near the firewall or inner fender.
What is a security relearn procedure?
After installing the new PCM, your vehicle’s anti-theft system (PassLock/VATS) needs to recognize it. The security relearn procedure is a simple process that involves turning the key to the ‘ON’ position for about 10-15 minutes, then off, and repeating two more times. This allows the Body Control Module to sync with the new PCM. Instructions are widely available online for this common GM procedure.
Will this module fit other GM vehicles?
Yes, this PCM is compatible with a wide variety of GM trucks and vans from the late 1990s and early 2000s that use the 4.3L, 5.0L, or 5.7L engines. Please refer to the detailed compatibility list on this page to confirm it fits your specific make, model, and year.
Is this a plug-and-play part?
Because it comes pre-programmed to your VIN, it is nearly plug-and-play. You will need to physically install it and then perform the security relearn procedure. No special tools or dealer visits for programming are required.