End the Guesswork and Get Back on the Road with Confidence
Is your 1998 Oldsmobile Bravada running rough, shifting erratically, or refusing to start? A failing Powertrain Control Module (PCM) can be the hidden culprit behind a host of frustrating issues, turning your reliable SUV into a source of daily stress. This isn’t just an inconvenience; it’s a matter of safety and dependability. We’re here to provide the definitive solution: a professionally programmed PCM, tailored specifically to your vehicle, that restores the smooth performance and peace of mind you deserve.
This module, part number 09355699, is the brain of your vehicle, managing everything from fuel mixture and ignition timing to transmission shift points. When it falters, the symptoms can be confusing and costly to misdiagnose. Our process eliminates the uncertainty. Upon purchase, simply provide us with your Vehicle Identification Number (VIN), and our experts will flash the module with the latest official GM software updates. It arrives at your door ready for a straightforward installation, saving you a trip to the dealership and the high costs associated with their programming services.
Warning Signs Your PCM Needs Attention
- ✔ Persistent Check Engine Light with codes like P0601, P0605, or P0606.
- ✔ Unexplained drops in fuel economy.
- ✔ Harsh or delayed transmission shifting.
- ✔ Engine stalling, sputtering, or rough idling.
- ✔ The vehicle cranks but refuses to start.
- ✔ Communication errors with diagnostic scan tools.
Guided Installation to Restore Your 1998 Bravada PCM
Replacing your vehicle’s computer might sound intimidating, but it’s a manageable job for a DIYer with basic tools. Follow these steps for a successful installation and regain control of your vehicle’s performance.
- Safety First: Always begin by disconnecting the negative terminal on your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On your 1998 Bravada, the PCM is typically located in the engine bay, often on the passenger side near the firewall or inner fender. It’s a metal box with several large wiring harness connectors.
- Disconnect and Remove: Carefully unplug the wiring harnesses. They have locking tabs that may need to be gently pried up. Once disconnected, unbolt the old module from its mounting bracket and remove it.
- Install the New Unit: Mount your new, pre-programmed PCM securely in the same location. Re-connect the wiring harnesses, ensuring they click firmly into place. A secure connection is critical for proper function.
- Final Steps: Reconnect the negative battery terminal. Your vehicle is now ready to start. It may take a few drive cycles for the computer to complete its internal learning processes.
An Expert’s Diagnostic Tip
Before you’re certain the PCM is the issue, take a moment to check your fundamentals. A corroded battery terminal or a loose ground wire can mimic PCM failure by causing voltage drops and communication errors. I’ve seen countless cases where a five-minute wire cleaning saved a customer hundreds of dollars. Always ensure your electrical connections are clean and tight before replacing a major component.
Tailored Fit for Your Ride
This PCM is a direct-fit replacement for a wide range of GM trucks and SUVs. Please verify your part number (09355699, 16250279, or 09366810) and check the compatibility list below to ensure a perfect match for your vehicle:
- 1998 Oldsmobile Bravada (4.3L)
- 1999 Cadillac Escalade
- 1998-1999 Chevrolet & GMC C/K 1500/2500/3500 Pickups (Gasoline)
- 1998-1999 Chevrolet Suburban & Tahoe / GMC Yukon (Gasoline)
- 1998-1999 Chevrolet Astro & GMC Safari
- 1998 Chevrolet S10 Blazer & GMC S15 Jimmy
- 1998 Chevrolet S10 & GMC Sonoma (4.3L)
- 1998 Chevrolet Express & GMC Savana Vans (Gasoline)
- 1998 GMC Envoy
- 1998 Isuzu Hombre (4.3L)
Frequently Asked Questions
Do I need to have this programmed by a dealer after I receive it?
No. The main benefit of our service is that we program the module to your vehicle’s specific VIN before we ship it. This makes it a plug-and-play installation, with no extra trips to a mechanic or dealer required.
What is a VIN and where do I find it?
The VIN is your Vehicle Identification Number, a unique 17-digit code for your car. You can easily find it 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 fix my transmission shifting problems?
In many cases, yes. The PCM controls the transmission’s electronic solenoids, which dictate shift points. If the PCM is faulty, it can cause hard shifting, delayed shifting, or being stuck in one gear. This module is often the solution to those electronic transmission issues.
What happens if I don’t provide my VIN?
Providing your VIN is a required step for this purchase. We cannot ship the module without programming it, as an unprogrammed unit will not function correctly in your vehicle. This ensures you receive a part that works right out of the box.
Is any other procedure, like a security relearn, necessary after installation?
For most vehicles on this list, a security relearn (often called a CASE relearn or Passlock relearn) may be necessary. This is a simple procedure that can typically be done without special tools and involves a sequence of turning the key on and off. We include general instructions to guide you through this process.