Restore Peak Performance to Your GM Truck or SUV
Is your reliable GM vehicle suddenly plagued by frustrating issues like a persistent check engine light, rough idling, or unpredictable stalling? These are common signs that the heart of your engine’s management system, the Powertrain Control Module (PCM), is failing. Don’t let a faulty computer keep you off the road. This direct-fit PCM, part number 09355699, is the definitive solution to bring back the smooth, dependable performance you count on every day.
We take the guesswork out of the repair. Before this module ships, we program it with the latest GM software updates, precisely matched to your vehicle’s unique VIN. This ensures seamless communication between your engine and transmission, restoring factory performance and efficiency. It’s not just a part; it’s the peace of mind that comes from a reliable, worry-free drive.
Warning Signs and How to Overcome Them
A failing PCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the solution you need:
- ✔ Persistent Check Engine Light with codes like P0601, P0602, P0605, or P0606.
- ✔ Unexplained drop in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Engine stalling, stumbling, or misfiring.
- ✔ Difficulty starting the vehicle or a complete no-start condition.
- ✔ Failure to pass emissions testing.
A Technician’s Note: Before installing your new PCM, it’s always a great practice to inspect the main engine wiring harness connectors for any corrosion or bent pins. Also, verify that your battery is fully charged and the ground connections on the engine and chassis are clean and tight. A solid electrical foundation is key to a long-lasting repair.
Guided Installation to Restore Your Ride
Replacing the 1999 Escalade PCM is a straightforward job that a confident DIYer can handle. Follow these steps for a successful installation:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to ensure all electrical systems are discharged.
- Locate the Module: On most of these GM trucks and vans, the PCM is located in the engine compartment, typically on the driver’s side fender well or near the battery.
- Disconnect Harnesses: Carefully unclip the wiring harness connectors from the old module. There are usually several multi-pin connectors with locking tabs. Avoid forcing them.
- Remove Old PCM: Unbolt the old module from its mounting bracket. Keep the hardware, as you may need to reuse it.
- Install New PCM: Mount your new, pre-programmed module in place and securely reconnect all wiring harnesses. You should hear a ‘click’ as they lock in.
- Reconnect Battery: Re-attach the negative battery terminal and tighten it.
- Final Steps: In some cases, a security relearn procedure (often called a CASE relearn or Passlock relearn) may be necessary. This can typically be done without special tools and instructions are widely available for your specific model.
Tailored Fit for Your GM Vehicle
This module is a direct replacement for multiple part numbers, including 09355699, 16250279, and 09366810. It is guaranteed to fit and function correctly on the following models:
- 1999 Cadillac Escalade
- 1998-1999 Chevrolet & GMC C/K 1500, 2500, 3500 Pickups (Gasoline)
- 1998-1999 Chevrolet & GMC Suburban 1500, 2500 (Gasoline)
- 1998-1999 Chevrolet Tahoe & GMC Yukon (Gasoline)
- 1998-1999 Chevrolet Express & GMC Savana 1500, 2500, 3500 Vans (Gasoline)
- 1998-1999 Chevrolet Astro & GMC Safari
- 1998 Chevrolet S10/Blazer & GMC Sonoma/Jimmy (4.3L)
- 1998 Oldsmobile Bravada (4.3L)
- 1998 GMC Envoy (4.3L)
- 1998 Isuzu Hombre (4.3L)
By providing your VIN upon purchase, you ensure this 1999 Escalade PCM arrives as a true plug-and-play solution, restoring the communication and performance your vehicle had when it was new. Get back behind the wheel with confidence and leave those check engine light headaches behind.
Frequently Asked Questions
What does “VIN Programmed” mean?
It means we load the module with the specific software and calibrations for your exact vehicle using your Vehicle Identification Number (VIN). This ensures it works correctly with your engine, transmission, and options, eliminating the need for an expensive trip to the dealership for programming.
Will I need to do anything after installing this PCM?
After installation, some vehicles may require a security or anti-theft system relearn procedure. This is a simple process you can often do yourself by cycling the key in the ignition. We recommend searching for the specific procedure for your year and model.
Is this a used part?
This is a high-quality, inspected, and tested component that has been expertly serviced and programmed to meet or exceed original factory specifications. It’s a reliable and cost-effective alternative to a new dealer part.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as the programming is essential for the part to function.
What if my part number isn’t an exact match to 09355699?
This module is a direct replacement for several part numbers, including 16250279 and 09366810. As long as your vehicle is on the compatibility list, this module will work perfectly once programmed to your VIN.