Restore Your Truck’s Performance and Reliability
If you’re dealing with frustrating issues like a persistent Check Engine Light, rough idling, stalling, or poor fuel mileage in your GM truck or van, a failing Powertrain Control Module (PCM) is often the culprit. As a technician with over two decades of experience under the hood, I’ve seen firsthand how a faulty PCM can create a cascade of problems that are tough to diagnose. It’s the brain of your engine, and when it’s not functioning correctly, nothing else will. This isn’t just an inconvenience; it affects your vehicle’s safety, emissions, and drivability.
This replacement PCM is the definitive solution. We take the guesswork and high dealership costs out of the equation. Each module is meticulously programmed with the latest official GM software updates, specifically matched to your vehicle using the VIN you provide. This ensures that when it arrives, it’s a true plug-and-play part, ready to restore your engine’s proper function, transmission shift points, and fuel delivery. Don’t let a bad computer keep your reliable truck off the road. This is the straightforward, professional-grade fix you need.
Case Study: The Ghost in the Machine
I once had a 2000 Chevy Express van in my bay with an intermittent no-start condition that was driving the owner crazy. He’d already replaced the fuel pump and battery based on another shop’s advice, with no luck. After connecting my scan tool, I noticed erratic data from multiple sensors and a telltale internal processor error code (P0601). The PCM’s internal circuits were failing under heat soak. We installed one of these VIN-programmed modules, and the van fired up instantly and ran smoother than it had in years. It’s a classic example of how targeting the root cause with the right part saves time, money, and a lot of headaches.
Is Your Truck Showing These Telltale Signs?
A failing PCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your engine’s computer needs attention:
- âś” Unexplained Check Engine Light illumination
- âś” Stalling, sputtering, or rough running conditions
- âś” Failure to pass an emissions or smog test
- âś” Harsh or erratic automatic transmission shifting
- âś” A complete no-start situation where the engine cranks but won’t fire
- âś” Noticeable decrease in fuel economy
- âś” Diagnostic Trouble Codes (DTCs) such as P0601, P0602, P0605, or P0606
Your Straightforward PCM Installation Guide
Replacing the PCM in most of these GM vehicles is a manageable job for a DIYer with basic hand tools. Our pre-programming service eliminates the most difficult step. Here’s a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes for the system to fully discharge.
- Locate the Module: On most trucks and vans covered here, the PCM is located in the engine compartment, often on the driver’s side fender well or near the battery.
- Disconnect Wiring: Carefully unclip and remove the electrical harness connectors. These often have locking tabs that need to be released gently. Avoid pulling on the wires themselves.
- Remove the Old PCM: Unbolt the module from its mounting bracket. Keep the hardware, as you may need to reuse it.
- Install the New PCM: Mount your new, pre-programmed module in place and securely fasten it.
- Reconnect Everything: Plug the wiring harnesses back in, ensuring they click securely into place. Reconnect the negative battery terminal.
- Perform Security Relearn (If Necessary): In many cases, you will need to perform a simple security relearn procedure, which typically involves turning the key to the ‘On’ position for 10-15 minutes. Instructions are readily available online for your specific model. Your vehicle is now ready to start.
Verified Fitment for Your GM Truck or Van
This module is a direct replacement for service number 16263494 and is compatible with a wide range of GM vehicles. Please verify your model and options below. Providing your VIN at checkout is essential for us to ensure perfect programming and compatibility.
– 1999-2000 GMC Sierra 1500 Pickup (6 cylinder)
– 1999-2000 Chevrolet Silverado 1500 Pickup (6 cylinder)
– 1999-2001 GMC Safari / Chevrolet Astro (4.3L)
– 1998-2000 Chevrolet S10 / GMC Sonoma (4.3L)
– 1998-2000 Oldsmobile Bravada / GMC Envoy / Chevrolet Blazer / GMC Jimmy (4.3L)
– 1999-2000 Cadillac Escalade
– 1999-2000 Chevrolet Tahoe / GMC Yukon
– 1999-2002 Chevrolet Express & GMC Savana Vans (1500/2500/3500 Gasoline)
– 1999-2000 Chevrolet & GMC C/K Pickups (1500/2500/3500 Gasoline)
– 1999-2000 Isuzu Hombre (4.3L)
– And more. Please cross-reference your part number (16263494, 16265035, etc.) to confirm.
Frequently Asked Questions
Frequently Asked Questions
Do I need to do anything after I install this PCM?
In most cases, you will need to perform a security relearn procedure, also known as a Passlock or VATS relearn. This is a simple process that takes about 30 minutes and involves cycling the ignition key. It does not require any special tools.
Is this a plug-and-play part?
Yes! Because we program the module to your vehicle’s specific VIN before shipping, it arrives ready to be installed without needing a trip to the dealership for expensive programming.
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.
Will this fix my specific problem?
This PCM will correct issues directly caused by a faulty module, such as internal processor errors, driver circuit faults, and communication failures. While it solves many common problems, it’s essential to ensure your vehicle’s issues are not caused by other components like bad sensors or wiring.
What part numbers does this replace?
This module is a direct replacement for several part numbers, including 16263494, 16265035, 8162634940, and 218-11787. Matching one of these numbers ensures compatibility.
Is a core charge required?
No core charge is required for this part. You do not need to send your old module back to us.