Restore Your Van’s Reliability with a VIN-Programmed PCM
Is your 1999-2002 GMC Savana 2500 Van running rough, failing emissions, or throwing a persistent Check Engine light? You’re not just dealing with an annoyance; you’re facing a faulty Powertrain Control Module (PCM), the central computer of your vehicle. As a technician with over two decades of experience, I’ve seen firsthand how a failing PCM can cause a cascade of frustrating and hard-to-diagnose issues. This isn’t just a part; it’s the solution to getting your workhorse van back on the road, running efficiently and reliably.
This isn’t a generic, off-the-shelf module that leaves you stranded. We take the guesswork and extra cost out of the repair. Simply provide your vehicle’s VIN at checkout, and our specialists will program this module with the latest official GM software specific to your Savana. This ensures seamless communication between your engine and transmission, restoring original performance and fuel economy. When it arrives, it’s ready for a straightforward installation, saving you a costly trip to the dealership for programming.
A Technician’s Notebook: The Intermittent Stall
I once had a local contractor bring in his ’01 Savana 2500. The van would run fine for days, then suddenly stall at a stoplight and refuse to restart for 10-15 minutes. No consistent codes, just a random P0300 (Random Misfire) now and then. We checked fuel pressure, spark, and sensors—all were fine. The issue was heat-soak affecting the PCM’s internal processor. After swapping in a VIN-programmed module like this one, the problem vanished instantly. The contractor was back to work the same day, no more unpredictable stalls jeopardizing his jobs. That’s the difference a quality, correctly programmed module makes.
Is Your Vehicle Showing These Symptoms?
- ✔ Persistent Check Engine Light (CEL)
- ✔ Diagnostic Trouble Codes (DTCs) related to internal module failure, such as P0601, P0604, or P0606.
- ✔ Communication errors with scan tools.
- ✔ Unexplained drop in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Engine stalling, stumbling, or failing to start.
- ✔ Failure to pass state emissions testing.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental contact.
- ✔ Locate the PCM: On most Savana and Express vans, the PCM is located in the engine compartment, typically on the driver’s side (LH rear engine compartment). On some trucks or other models, it may be near the battery.
- ✔ Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Do not force them. Inspect the connectors for any corrosion or damage.
- ✔ Remove the Old Module: Unbolt the old PCM from its mounting bracket. Keep the hardware as you may need it for the new installation.
- ✔ Install the New Module: Mount your new, pre-programmed PCM onto the bracket and secure it.
- ✔ Reconnect Everything: Firmly plug the electrical harnesses back into the new module until they click into place. Reconnect the negative battery terminal.
- ✔ Perform Security Relearn (If Necessary): In many cases, you may need to perform a simple security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times before starting the engine. This allows the vehicle’s anti-theft system to recognize the new PCM.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 16263494, 16265035, and 8162634940. It is guaranteed to fit the following vehicles, but always verify your part number or consult a professional if you are unsure.
1500/2500/3500 Pickup (99-00), Astro (99-01), Blazer S10 (98-00), Express 1500/2500/3500 Van (99-02), S10 (98-00), Silverado 1500 (99-00), Suburban 1500/2500 (99), Tahoe (99-00)
GMC:
1500/2500/3500 Pickup (99-00), Envoy (98-00), Jimmy S15 (98-00), Safari (99-01), Savana 1500/2500/3500 Van (99-02), Sierra 1500 (99-00), Sonoma S15 (98-00), Yukon (99-00)
Cadillac:
Escalade (99-00)
Oldsmobile:
Bravada (98-00)
Isuzu:
Hombre (98-00)
Note: Specific options, engines (e.g., 4.3L, 5.0L, 5.7L gasoline), and build dates apply. Please refer to the detailed fitment data or contact us with your VIN to confirm.
Frequently Asked Questions
Frequently Asked Questions
Do I need to do anything after I buy this 1999-2002 Savana 2500 Van PCM?
Yes. After your purchase, you must send us your vehicle’s 17-digit VIN. We cannot ship the module until we have this information to program it correctly for your specific van.
Is this a plug-and-play part?
Almost always, yes. Because we program it to your VIN, it should be ready to install and start. In some GM vehicles, a simple 30-minute security relearn procedure (turning the key on and off) is required, which you can easily do yourself.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM (e.g., code P0601), this module is the correct fix. However, you should always ensure other potential issues like faulty sensors or wiring have been ruled out by a proper diagnosis.
What part number should I match?
This module, 218-11787, directly replaces several common GM part numbers, including 16263494 and 16265035. As long as your vehicle is on the compatibility list, this module will work once programmed to your VIN.