Is your Chevrolet Express, GMC Savana, Tahoe, or Suburban running rough, stalling, or refusing to start? Are you battling persistent Check Engine lights with codes pointing to the engine computer? You’ve likely diagnosed a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. Don’t let a faulty computer keep your reliable GM truck or van off the road. This genuine used PCM, service number 9355699, is the definitive solution to restore your vehicle’s performance and reliability.
This isn’t just a used part pulled from a yard. Each module undergoes a thorough inspection and is then professionally programmed with the latest official GM software updates specifically for your vehicle. By providing us with your Vehicle Identification Number (VIN) during checkout, we ensure the unit arrives flashed and ready for installation. This critical step guarantees proper communication with all other modules, correct engine and transmission parameters, and seamless operation, saving you a costly trip to the dealership for programming.
Expert Pro Tip
Expert Pro Tip
Before replacing your PCM, always perform a thorough check of the vehicle’s power and ground circuits. A corroded ground wire or a faulty connection at the fuse block can mimic PCM failure symptoms. Use a multimeter to verify a stable 12V+ supply and clean, tight ground connections at the engine block and chassis. This simple diagnostic step can save you from replacing a perfectly good module.
Common Symptoms of a Failing GM PCM
- ✔ Check Engine Light is on with various communication or sensor codes.
- ✔ Engine cranks but will not start.
- ✔ Rough or erratic idling and stalling.
- ✔ Poor fuel economy and noticeable loss of power.
- ✔ Harsh or incorrect automatic transmission shifting.
- ✔ Intermittent issues that are difficult to diagnose.
- ✔ No communication with a diagnostic scan tool.
Why Choose Our Programmed PCM 9355699?
When it comes to your vehicle’s central computer, precision is key. Our process ensures you receive a part that is not only mechanically compatible but electronically identical to your original. We flash the module using your VIN, which inputs all the specific calibrations for your engine, transmission, and factory options. This Programmed PCM 9355699 is a direct-fit replacement for a wide array of 1998-1999 General Motors trucks, vans, and SUVs, including popular models like the Chevrolet C/K 1500/2500/3500 pickups, Suburban, Tahoe, GMC Sierra, Yukon, and Cadillac Escalade. Please verify your original part number against our cross-reference list to ensure compatibility.
Installation is straightforward for any experienced DIYer or professional technician. Once installed, you may need to perform a simple security relearn procedure (often called a Passlock or VATS relearn) to sync the new PCM with your vehicle’s anti-theft system. This procedure typically involves a sequence of key cycles and can be done without special tools. Instructions are widely available online or in service manuals for your specific model.
By choosing this pre-programmed module, you are getting a cost-effective, reliable repair that restores your vehicle to its factory operating condition. Get your truck or van back to work with a dependable, VIN-matched Programmed PCM 9355699.
Frequently Asked Questions
Expert Pro Tip
Before replacing your PCM, always perform a thorough check of the vehicle’s power and ground circuits. A corroded ground wire or a faulty connection at the fuse block can mimic PCM failure symptoms. Use a multimeter to verify a stable 12V+ supply and clean, tight ground connections at the engine block and chassis. This simple diagnostic step can save you from replacing a perfectly good module.