Restore Your Vehicle’s Heartbeat and Drive with Confidence
Is your truck or car running rough, stalling unexpectedly, or throwing confusing check engine lights? The Powertrain Control Module (PCM) is the central computer, the very brain of your vehicle’s engine and transmission. When it begins to fail, it can cause a cascade of frustrating and unpredictable problems, leaving you stranded and stressed. This replacement module is your direct, reliable solution to bring back the smooth performance and unwavering dependability you count on. Forget expensive dealership visits and complex procedures; we handle the programming for you. By flashing this module with the latest GM software updates and matching it precisely to your vehicle’s VIN, we deliver a part that’s ready for a straightforward installation right out of the box.
Warning Signs and How to Overcome Them
A failing PCM can manifest in many ways. If you’re experiencing any of the following, it’s a strong indicator that your vehicle’s computer needs attention. Replacing it can restore your engine’s health and your peace of mind.
- ✔ Check Engine Light: Persistent illumination, especially with communication-related Diagnostic Trouble Codes (DTCs) like P0600, P0601, or P0606.
- ✔ Erratic Engine Behavior: Unexplained stalling, rough idling, misfires, or a sudden drop in fuel economy.
- ✔ Transmission Problems: Harsh, delayed, or incorrect gear shifting, as the PCM also controls transmission functions.
- ✔ No-Start Condition: The engine cranks but won’t start, or it won’t crank at all, even with a good battery and starter.
- ✔ Failed Emissions Test: Inability to pass smog inspections due to module-related errors.
An Expert’s Note: The Driveway Fix That Saved a Road Trip
I remember a customer, Mark, with a 2000 Silverado. He was getting ready for a family camping trip when his truck started stalling at stoplights. His local shop quoted him a massive bill, mostly for diagnostics and dealership programming of a new module. He was about to cancel his trip. Instead, he ordered one of our pre-programmed units. It arrived two days later, and with a basic socket set and a bit of guidance, he swapped it out himself in under an hour right in his driveway. He called back later that week, not from his house, but from the campground. The relief in his voice was immense—he didn’t just fix his truck; he saved his family’s vacation and regained the confidence to rely on his vehicle again.
Guided Installation for Your 1999-2000 Sierra 1500 PCM
Installing your new computer is a manageable task for a DIYer. This module’s pre-programmed state eliminates the most difficult step. Follow this guide for a smooth replacement.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the old PCM. On most 1999-2002 GM trucks like the Sierra and Silverado, you’ll find it in the engine bay on the driver’s side, typically under or near the battery tray.
- Disconnect the wiring harnesses. There are several multi-pin connectors. They have locking tabs that need to be released carefully. Do not force them. Note their color and orientation.
- Remove the old module. Unbolt the mounting brackets holding the original PCM in place and carefully lift it out of the vehicle.
- Install the new module. Seat your new, pre-programmed PCM into the mounting bracket and secure it. Reconnect the wiring harnesses, ensuring each one clicks firmly into place.
- Reconnect the battery. Once everything is secure, reattach the negative battery terminal.
- Perform the security relearn procedure if necessary. In many cases, you may need to perform a simple key-cycle procedure to sync the new PCM with your vehicle’s anti-theft system. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating 2-3 times before starting the engine.
Tailored Fit for Your Ride
This module is a direct replacement for part numbers 09354896, 19109040, and 9354896. It is guaranteed to fit and function correctly on the following models and years:
- CAMARO: 1999-2002 (5.7L)
- CORVETTE: 1999-2000
- FIREBIRD: 1999-2002 (5.7L)
- SIERRA 1500 PICKUP: 1999-2000 (8 cylinder)
- SIERRA 2500 PICKUP: 1999-2000
- SILVERADO 1500 PICKUP: 1999-2000 (8 cylinder)
- SILVERADO 2500 PICKUP: 1999-2000
- SUBURBAN 1500: 2000
- SUBURBAN 2500: 2000
- TAHOE: 2000 (Silverado style)
- YUKON: 2000 (exc. Denali)
- YUKON XL 1500: 2000
- YUKON XL 2500: 2000
Frequently Asked Questions
Is this module really plug-and-play?
Yes, for the most part. We program the module to your vehicle’s specific VIN, which handles the most complex part of the installation. In some cases, you may need to perform a simple security or CASE (Crankshaft Angle Sensor Error) relearn procedure, which can often be done without special tools.
How do I provide my VIN number?
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 it to work in your car or truck.
Will this fix my specific problem?
This module is a direct solution for a failed PCM. While it resolves a wide range of engine and transmission issues, we always recommend proper diagnostics to confirm the PCM is the root cause before ordering. Check for consistent communication error codes or have a professional mechanic verify the failure.
What if my original part number is slightly different?
This module replaces several part numbers, including 09354896, 19109040, and 9354896. As long as your vehicle is on the compatibility list and your original part is one of these numbers, this module will work perfectly once programmed.
Do I need to send my old part back?
This listing does not require you to return your original module. There is no core charge associated with this purchase, saving you time and the hassle of return shipping.