Get Your Workhorse Van Back on the Job, Fast.
As a technician with over two decades of experience, I know that a down work van isn’t just an inconvenience—it’s lost time and lost income. When your 2005-2007 Savana 2500 Van starts acting up with bizarre electrical issues, poor performance, or a dreaded no-start condition, the Powertrain Control Module (PCM) is often the culprit. This isn’t just a part; it’s the central computer of your vehicle, managing everything from fuel delivery and spark timing to transmission shifting. A failing one can bring your entire operation to a halt.
This is your direct-fit, reliable solution. We take the guesswork and the expensive trip to the dealership out of the equation. This PCM, part number 89017749, arrives at your door pre-programmed with the latest GM software updates, specifically flashed to your van’s unique Vehicle Identification Number (VIN). This ensures seamless communication with your vehicle’s other modules and restores the performance and reliability you depend on. Forget about costly programming fees or complex tool requirements. This is the straightforward fix you need.
Case Study: A Tricky Diagnosis
I once had a 2006 Express 2500 (the Savana’s twin) in my bay with a complaint of intermittent stalling and a flashing check engine light. The owner, a local plumber, had already replaced the fuel pump and a couple of sensors with no luck. The codes were all over the place—U0100 for lost communication, P0300 for random misfires, and a P0601 for an internal memory error. After chasing wiring for hours, we tested the PCM’s power and grounds, which were solid. The only logical conclusion was an internal failure in the module itself. A new, programmed PCM like this one solved all the issues in under an hour. It’s a classic example of how a failing 2005-2007 Savana 2500 PCM can mimic a dozen other problems.
Is Your Van Showing These PCM Failure Signs?
- ✔️ Check Engine Light is on with codes like P0601, P0606, or U0100.
- ✔️ The engine cranks but refuses to start.
- ✔️ Unexplained stalling or rough idling, especially after warming up.
- ✔️ A noticeable drop in fuel economy.
- ✔️ Harsh or erratic automatic transmission shifting.
- ✔️ Communication errors with your scan tool.
- ✔️ Other warning lights (like ABS or security) illuminating for no reason.
A Straightforward Guide to Installation
Installing your new 2005-2007 Savana 2500 PCM is a manageable job for a DIYer with basic tools. Here’s a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes for the system capacitors to discharge.
- Locate the PCM: On most Savana and Express vans, the PCM is located in the engine compartment on the driver’s side, often near the firewall or master cylinder.
- Disconnect the Connectors: Carefully unclip the wiring harness connectors. These usually have a locking tab or lever. Be gentle to avoid damaging the pins or clips.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket. Keep the hardware, as you may need to reuse it.
- Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and securely fasten it.
- Reconnect Everything: Plug the wiring harnesses back into the new module until they click securely in place. Reconnect the negative battery terminal.
- Security Relearn Procedure: In many cases, you will need to perform a security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. This allows the vehicle’s anti-theft system to recognize the new PCM. Your van should then start and run correctly.
Verified Compatibility for Your GM Vehicle
This module is a direct replacement for part numbers 12589462, 12602801, and 89017749. It fits a wide range of GM trucks and vans. Please confirm your vehicle is on this list:
- ✔️ Chevrolet Express & GMC Savana Vans (1500, 2500, 3500): 2005, 2006, 2007 (Gasoline engines)
- ✔️ Chevrolet Silverado & GMC Sierra Pickups (1500, 2500, 3500): 2005-2007 (Gasoline engines, including 4.3L and 8.1L models, check notes for classic body style)
- ✔️ Chevrolet Suburban 2500 & Yukon XL 2500: 2005-2006 (8.1L)
- ✔️ Chevrolet Avalanche 2500: 2005-2006
- ✔️ GMC Safari & Chevrolet Astro: 2005
- ✔️ Chevrolet S10 Blazer & GMC S15 Jimmy: 2005
- ✔️ Cadillac CTS-V: 2004-205 (Check specific ID)
After purchase, simply provide us with your VIN. We’ll handle the programming, ensuring your new 2005-2007 Savana 2500 PCM is ready for installation right out of the box.
Do I need to get this programmed by a dealer?
Do I need to get this programmed by a dealer?
No. The main benefit of our service is that this PCM comes fully programmed for your specific vehicle using the VIN you provide. This saves you the time, hassle, and expense of a dealership visit. It’s designed to be a plug-and-play solution.
What is a VIN and where do I find it?
The VIN is your vehicle’s 17-digit Vehicle Identification Number. It’s like a fingerprint for your car. You can easily find it on the driver’s side of the dashboard (visible through the windshield) or on the sticker in the driver’s side door jamb.
Will I need to do a CASE relearn?
A Crankshaft Variation (CASE) relearn is sometimes required to prevent a P0315 trouble code. While not always necessary after a PCM swap, it requires a bi-directional scan tool. Many local repair shops can perform this service for a small fee if needed.
Is this compatible with other part numbers?
Yes, this module is a direct replacement for several part numbers, including 12589462 and 12602801. As long as your vehicle is on the compatibility list, this module will function correctly once programmed to your VIN.