Is Your GM Truck or Van Running Rough?
A faulty Powertrain Control Module, or PCM, is the root cause of some of the most frustrating and difficult-to-diagnose vehicle problems. If you’re dealing with a persistent check engine light, unexplained stalling, poor fuel mileage, or a vehicle that simply won’t start, the brain of your engine could be failing. This isn’t just an inconvenience—it’s a reliability issue that can leave you stranded. This replacement module is the definitive, hassle-free solution to get your vehicle running dependably again.
Common Symptoms & Your Solution
When the central computer fails, it can trigger a wide range of issues. You might be experiencing one or more of the following:
- Check Engine Light (CEL) with communication-related Diagnostic Trouble Codes (DTCs) like U0100, P0601, or P0606.
- Engine Stalling or Misfiring: The engine may cut out intermittently while driving or run rough at idle.
- No-Start Condition: The engine cranks but refuses to start due to lack of fuel or spark commands.
- Poor Performance & Fuel Economy: A failing PCM can’t properly manage engine parameters, leading to a noticeable drop in power and more trips to the gas station.
- Erratic Transmission Shifting: The PCM often works with the transmission controller, and a fault can cause harsh or incorrect gear changes.
This Programmed 12589462 PCM is the answer. We take all the guesswork out of the repair. By flashing the module with the latest GM software updates and calibrating it specifically to your vehicle’s VIN, we provide a component that is ready for installation right out of the box.
Features & Benefits
- ✔ VIN-Specific Programming Included: We flash the module with your vehicle’s exact VIN, ensuring it communicates perfectly with your existing systems and components.
- ✔ Plug-and-Play Installation: Because it’s pre-programmed, this module eliminates the need for expensive dealership programming or specialized scan tools for setup.
- ✔ Updated GM Software: Your module arrives with the newest software from General Motors, which can resolve factory bugs and improve drivability.
- ✔ Broad Compatibility: Replaces multiple part numbers including 12589462, 12602801, and 89017749, covering a wide range of GM trucks, vans, and SUVs.
- ✔ Restored Drivability: A correctly functioning PCM is critical for smooth engine operation, proper shifting, and optimal fuel efficiency.
- ✔ This unit is backed by our one-year replacement warranty.
Expert Insight: The Anti-Theft Relearn Procedure
One of the biggest hurdles when replacing a GM computer is the vehicle’s anti-theft system (Passlock or Passkey). An unprogrammed module will typically trigger this system, preventing the engine from starting. Because our Programmed 12589462 PCM is matched to your VIN, it simplifies this process immensely. In most cases, you will only need to perform a simple, key-on/key-off “relearn” procedure that takes about 30 minutes and requires no special tools. This step ensures the new PCM properly syncs with your vehicle’s security system, saving you from a costly tow to a shop.
Frequently Asked Questions
Do I need to send my old computer in?
No, there is no core charge or need to send your original module to us. This is a direct replacement part that we program and ship to you.
What information do you need from me?
After you place your order, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This is crucial for us to program the module correctly for your specific make, model, and options.
Is any additional programming required after installation?
No. The module arrives fully programmed for engine and transmission operation. You will, however, need to perform the vehicle’s security relearn procedure, which can be done without any special tools. We can provide instructions for this simple process.
Will this fix my specific problem?
This PCM is a direct solution for issues caused by a failed module. While it resolves the common symptoms listed above, it’s essential to ensure your vehicle’s wiring and sensors are in good working order. A proper diagnosis is always recommended before replacing any electronic component.
How do I find my VIN?
Your VIN can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side of the dashboard, visible through the windshield.