Is Your GM Truck or Van Running Rough, Stalling, or Refusing to Start?
A faulty Powertrain Control Module (PCM) can bring your workhorse vehicle to a grinding halt, causing immense frustration and costly downtime. If you’re dealing with erratic engine behavior, poor fuel economy, or a dashboard full of warning lights, the brain of your engine is likely the culprit. This isn’t just an inconvenience; it’s a critical failure that impacts your ability to get the job done. Our VIN-programmed PCM is the direct, reliable fix to get you back on the road and back to work with confidence.
Common Symptoms & Your Solution
A failing engine computer can manifest in numerous ways. You might be experiencing one or more of the following issues:
- Check Engine Light: Persistent and often accompanied by communication codes (like U0100) or performance-related Diagnostic Trouble Codes (DTCs).
- No-Start or Hard-Start: The engine cranks but won’t fire up, or takes an excessive amount of time to start.
- Poor Performance: Noticeable loss of power, hesitation during acceleration, and rough idling.
- Reduced Fuel Economy: The PCM controls the fuel mixture, and a fault can cause your vehicle to consume significantly more fuel.
- Transmission Issues: In many GM vehicles, the PCM also influences shifting. You may experience harsh or erratic shifting.
This Programmed 89017749 PCM is the definitive solution. We take the guesswork out of the repair by flashing the module with the latest official GM software, specifically matched to your vehicle’s VIN. This ensures all parameters are set correctly for your engine, transmission, and options package, making for a straightforward installation.
Features & Benefits
- โ VIN-Programmed for Your Vehicle: Simply provide your VIN after purchase, and we’ll program the module before it ships. This eliminates the need for expensive dealership programming tools.
- โ Loaded with Latest GM Software: Your PCM will have the most recent updates from General Motors, which often include fixes for common drivability issues and performance improvements.
- โ Plug-and-Play Installation: Once you receive the module, installation is as simple as disconnecting the old unit and plugging this one in. A security relearn procedure may be required, which is a simple process for most models.
- โ Restores Peak Performance: A correctly functioning PCM ensures optimal engine timing, fuel delivery, and emissions control, bringing back the power and efficiency you depend on.
- โ Direct-Fit Replacement: This unit is a direct replacement for part numbers 12589462, 12602801, and 89017749, guaranteeing a perfect fit and proper connection.
- โ This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of a Proper Program
As a technician, I’ve seen countless vehicles come in with persistent, hard-to-diagnose running problems. Often, the issue isn’t a faulty sensor but outdated software in the original PCM. Over the years, GM engineers release software updates to resolve issues they discover after the vehicle leaves the factoryโthings like cold-start stumbles or minor transmission hesitations. When you buy a used computer from a junkyard, you’re getting that old, problematic software. Our process ensures your new Programmed 89017749 PCM has the very latest, most refined software available, giving your vehicle a fresh start and often fixing problems you didn’t even know were software-related.
Frequently Asked Questions
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 specific to your truck or van.
Is this a difficult part to install?
For most DIYers with basic tools, this is a straightforward installation. The PCM is typically located in the engine bay. The process involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and then reversing the process. In some cases, a simple security relearn procedure (often called a “key-on, key-off” cycle) is needed to sync the module with your vehicle’s anti-theft system.
Will this fix my specific problem?
This PCM will resolve issues directly caused by a faulty engine computer. While the symptoms listed above are common indicators of PCM failure, it’s always best to have a proper diagnosis performed to rule out other potential causes like bad sensors or wiring problems.
Do I need to send my old part back?
No core charge or return is required for this part. You can keep or recycle your old module.
Is this compatible with part number 12589462?
Yes, this module is a fully compatible, direct replacement for original GM part numbers 89017749, 12589462, and 12602801. It will function identically once programmed to your vehicle’s VIN.