Is Your GM Truck or SUV Running Rough?
If your 1998 Oldsmobile Bravada, Chevy S10, GMC Jimmy, or another compatible GM vehicle is experiencing frustrating issues like stalling, erratic shifting, a persistent check engine light, or a complete no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. The PCM is the brain of your vehicle, controlling everything from fuel mixture and ignition timing to transmission shift points. When it fails, it can cause a wide range of confusing and debilitating symptoms. This isn’t just an inconvenience; it’s a critical component failure that can leave you stranded.
I once had a ’99 Tahoe in the shop that was driving the owner crazy. It would randomly die at stoplights and had a harsh 1-2 shift. He had already replaced the throttle position sensor and the idle air control valve based on some forum advice, but the problem persisted. After hooking up the scanner, I noticed some erratic data PIDs from the PCM and a few communication codes. We swapped in a known-good, correctly programmed PCM, and it was like a different truck. Smooth idle, crisp shifts, and no more stalling. It’s a classic case where chasing individual sensors can cost you more time and money than addressing the root cause: the central computer.
Common Failure Symptoms
- ✔ Check Engine Light is on with various communication or sensor codes (e.g., U-codes, P0601-P0606).
- ✔ Vehicle refuses to start or cranks but won’t turn over.
- ✔ Poor or erratic automatic transmission shifting.
- ✔ Rough idle, stalling, or hesitation during acceleration.
- ✔ Noticeable decrease in fuel economy.
- ✔ Misfire codes that don’t resolve after replacing spark plugs or coils.
- ✔ Communication issues with diagnostic scan tools.
Why Choose Our Pre-Programmed 1998 Bravada PCM?
Replacing a PCM isn’t as simple as just swapping the part. The module must be specifically programmed with your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM software updates. This process ensures that the computer communicates correctly with your engine, transmission, anti-lock brakes, and security system. Skipping this step will result in a vehicle that won’t start or run properly. We take the guesswork and hassle out of the repair. This is a genuine, used OEM module that has been thoroughly tested and is ready for installation. We handle the complex programming for you, making this a true plug-and-play solution.
Simply provide us with your vehicle’s VIN after purchase, and our technicians will flash the module with the correct factory software for your specific make and model. This service saves you a costly trip to the dealership and eliminates the need for expensive programming tools. This computer is a direct replacement for multiple part numbers, including 09355699, 16266645, 16250279, 16258815, and 09366810, and fits a wide range of GM trucks and vans from 1998-1999. Restore your vehicle’s reliability and performance with a dependable, correctly programmed PCM.
Frequently Asked Questions
Do I need to program this computer?
No. We program the computer for you using the VIN you provide before we ship it. This makes the installation process much simpler, though a security relearn procedure may still be required in your vehicle.
Is this a new part?
No, this is a high-quality, tested, and guaranteed functional used OEM computer sourced from a salvaged vehicle. This ensures original factory performance and compatibility.
What information do you need from me?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. This is essential for us to load the correct software for your specific vehicle configuration.
Will this fix my check engine light?
If the PCM itself is the cause of the check engine light and the associated fault codes, then yes, this replacement will resolve the issue. However, if there are other failing sensors or mechanical problems with your vehicle, the light may return.
What is a ‘security relearn’ or ‘CASE relearn’?
Many GM vehicles have an anti-theft system (Passlock/VATS) that may need to be synchronized with the new PCM. This is a simple procedure that typically involves turning the key on and off in a specific sequence. A CASE (Crankshaft Angle Sensor Error) relearn may also be needed with a scan tool to prevent a misfire code. Instructions for the security relearn are readily available online.
How do I confirm this part fits my vehicle?
The best way is to match the part number from your original computer to one of the numbers listed (09355699, 16266645, 9355699, etc.). You can also use the extensive fitment list provided in the description to check your make, model, and year.