Is Your GM Van or Truck Running Rough?
If your 2005-2007 GMC Savana, Chevrolet Express, or another compatible GM vehicle is suffering from mysterious engine problems, a failing Powertrain Control Module (PCM) is often the culprit. As the central computer for your engine and transmission, a faulty PCM can cause a cascade of issues, from poor fuel economy and rough idling to a frustrating no-start condition. This replacement PCM, part number 12589462, is the definitive solution to restore your vehicle’s performance, reliability, and drivability.
Symptoms of a Failing Powertrain Control Module
- ✔ Check Engine Light is illuminated with various diagnostic trouble codes (DTCs).
- ✔ Your vehicle fails to start or starts and then immediately stalls.
- ✔ Noticeable decrease in fuel efficiency for no apparent reason.
- ✔ The engine runs rough, misfires, or hesitates during acceleration.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Loss of power or sluggish performance.
The Plug-and-Play Solution for Your 2005-2007 Savana 1500 PCM
Don’t let a faulty computer keep your vehicle off the road. This module is a direct-fit replacement, but with a crucial advantage: we program it specifically for your vehicle before it ships. Simply provide us with your Vehicle Identification Number (VIN) during checkout, and our technicians will flash the module with the latest, most stable software updates from General Motors. This ensures perfect compatibility with your vehicle’s specific configuration, engine, and transmission, eliminating the need for an expensive trip to the dealership for programming.
This unit is a guaranteed replacement for part numbers 12589462, 12602801, and 89017749. It fits a wide range of GM trucks and vans, including the Chevrolet Silverado, GMC Sierra, Suburban, Avalanche, and more. Please verify the fitment list to ensure compatibility with your exact model and year.
Frequently Asked Questions
Do I need to get this PCM programmed?
No. We handle the programming for you. Simply provide your vehicle’s VIN when you order, and we will flash the module with the correct GM software for your specific vehicle before we ship it.
What is a security or CASE relearn?
After installation, your vehicle’s anti-theft system (Passlock/VATS) may need to be synchronized with the new PCM. This is a simple procedure that typically involves turning the key to the ‘ON’ position for 10-15 minutes. A Crankshaft Variation (CASE) relearn might also be needed, which can be done with a capable scan tool.
Where is the PCM located on my Savana or Express van?
On most 2005-2007 Savana and Express vans, the PCM (also called ECM) is located in the engine compartment on the driver’s side, often near the rear of the engine bay. On Silverado and Sierra pickups, it’s typically found under the battery tray on the driver’s side.
Is this compatible with other part numbers?
Yes, this module is a direct replacement for part numbers 12589462, 12602801, and 89017749. It is designed to function identically to the original equipment.
How do I find my VIN?
Your 17-digit Vehicle Identification Number (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.