Restore Peak Performance to Your GM Vehicle
Is your 2005-2007 GMC Savana 1500, Chevrolet Express, or other compatible GM truck suffering from perplexing issues like a persistent check engine light, poor fuel mileage, erratic shifting, or a no-start condition? The Powertrain Control Module (PCM), often called the engine’s brain, is frequently the source of these frustrating problems. This genuine GM control module, part number 12602801, is the definitive solution to restore your vehicle’s factory performance, reliability, and efficiency.
The PCM is the central command unit for your vehicle’s most critical functions. It precisely manages the engine’s fuel delivery, ignition timing, emissions systems, and communicates with the transmission to ensure smooth, efficient operation. Over time, exposure to heat, vibration, and electrical fluctuations can cause internal components to fail, leading to a cascade of performance issues that can leave you stranded. Replacing a faulty module is not just a repair; it’s a restoration of your vehicle’s core operational integrity.
From the Diagnostic Bay
We had a 2006 Savana 2500 work van towed in that would crank but not start. The owner had already replaced the fuel pump and crank sensor with no luck. Our initial scan showed no communication with the PCM. After verifying power and ground to the module were good, we knew the PCM itself had failed internally. We installed one of these VIN-programmed modules, performed the security relearn, and the van fired up on the first try. The owner was back on the road making money the same day, saving hundreds over a dealership repair.
Diagnosing a Failing 2005-2007 Savana 1500 PCM
A failing PCM can manifest in various ways, often mimicking other component failures. If you’re experiencing any of the following symptoms, your Powertrain Control Module should be a primary suspect. A faulty module can disrupt communication between sensors and actuators, leading to incorrect engine and transmission commands.
Common Symptoms of PCM Failure
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine cranks but refuses to start.
- ✔ Intermittent stalling or stumbling while driving.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh, delayed, or erratic automatic transmission shifting.
- ✔ Misfire codes (e.g., P0300) even after replacing plugs and coils.
- ✔ No communication with a diagnostic scan tool.
This module is a direct replacement for multiple part numbers, including 12589462, 12602801, and 89017749. It fits a wide range of GM trucks and vans from the mid-2000s, making it a versatile and reliable solution for many owners. Our service simplifies the repair process. We flash the module with the latest GM-certified software specific to your vehicle’s VIN. This ensures that it communicates perfectly with your vehicle’s existing systems, including the anti-theft (Passlock/Passkey) system, right out of the box, minimizing installation headaches.
Frequently Asked Questions
Do I need to program this PCM?
No, we handle the programming for you before shipment. Simply provide your vehicle’s VIN when you place your order, and we will flash the module with the correct software for your specific vehicle. This makes installation much simpler.
Where is the PCM located on my 2005-2007 Savana Van?
On the 2005-2007 Savana and Express vans, the PCM (Electronic Control Module) is typically located in the engine compartment, on the driver’s side, often near the rear of the engine bay. Always disconnect the battery before attempting to remove or install the module.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of your existing PCM, then yes, this replacement module will resolve the issue. However, it’s crucial to ensure that the codes are not being caused by other faulty components like sensors or wiring.
What is a CASE Relearn and will I need to do one?
A CASE (Crankshaft Angle Sensor Error) Relearn is a procedure that synchronizes the new PCM with the engine’s crankshaft position sensor. While not always required, it is highly recommended for optimal performance and to prevent a P1336 trouble code. This procedure must be performed with a compatible high-level scan tool after the new PCM is installed.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive and validate your VIN.