Is Your 1998-1999 GM Truck or SUV Running Rough?
If you’re dealing with frustrating issues like a persistent check engine light, erratic transmission shifting, a no-start condition, or just poor engine performance in your Tahoe, Yukon, Suburban, or another GM truck from this era, a failing Powertrain Control Module (PCM) is often the culprit. As the electronic brain of your vehicle, when the PCM starts to fail, it can cause a cascade of problems that are difficult to diagnose. I’ve seen hundreds of these GMT400-platform vehicles in my shop over the years, and a faulty engine computer is one of the most common electronic failures as they age.
The Direct, Hassle-Free Solution: A VIN-Programmed PCM
Forget the expensive trip to the dealership and the uncertainty of a junkyard part. This is a reliable, used OEM Powertrain Control Module that we program specifically to your vehicle’s VIN before it ships. This ensures it has the correct software and the latest updates from GM, making it a true plug-and-play replacement. You’re not just buying a part; you’re buying a complete solution.
Common Symptoms of a Failing PCM:
- โ Persistent Check Engine Light (CEL) with communication or internal module codes.
- โ Harsh or erratic automatic transmission shifting.
- โ Engine stalling, stumbling, or rough idling.
- โ Complete no-start condition where the engine cranks but won’t fire.
- โ Poor fuel economy and loss of power.
- โ Intermittent electrical issues that seem to have no cause.
From the Shop Floor: A Real-World Scenario
“A customer’s ’99 Suburban came in last week with a complaint of a harsh 1-2 shift and a random stalling problem that no other shop could solve. The scanner showed no hard fault codes, just intermittent communication loss. We suspected the PCM. After confirming power and grounds were solid, we installed one of our VIN-programmed modules. The test drive was perfectโsmooth shifts and rock-solid idle. The original PCM’s internal processor was failing under heat, a classic issue I’ve diagnosed on at least 50 of these specific GM computers.”
Easy Installation for the DIYer
You don’t need to be a master technician to replace this module. With basic hand tools, you can have your truck running right in under an hour. Because we handle the programming, no special scan tools or dealer visits are required for the installation.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: On most of these trucks and SUVs (like the Tahoe/Yukon), the PCM is located in the engine compartment on the driver’s side, near the fender or firewall.
- Disconnect the Harnesses: Carefully unclip and remove the electrical connectors from the old module. Inspect the pins for any corrosion and clean them if necessary.
- Swap the Module: Unbolt the old PCM from its bracket and secure the new one in its place.
- Reconnect and Finalize: Plug the electrical harnesses firmly into the new module, reconnect your battery terminal, and start the vehicle.
Guaranteed Compatibility for Your Vehicle
This module is a direct replacement for a wide range of GM vehicles. To ensure a perfect match, please provide your 17-digit VIN when you place your order. This allows us to load the exact software your vehicle needs for optimal performance.
This PCM is a direct fit for service ID 09355699 and replaces the following part numbers:
- โ 09366810
- โ 16266645
- โ 9355699
- โ 16250279
- โ 16258815
Restore the reliability and performance of your truck with a solution you can trust. Order your pre-programmed 1998-1999 Tahoe PCM today and get back on the road with confidence.