Is Your Work Van Unreliable? Get Back on the Job Fast.
For a business owner, a 2005-2007 Savana 3500 that won’t start, stalls unexpectedly, or runs poorly isn’t just an inconvenienceโit’s a direct hit to your bottom line. I’ve seen it countless times in my 20+ years as a technician. A failing Powertrain Control Module (PCM) can cause some of the most frustrating and hard-to-diagnose issues, leaving you stranded and your van out of commission. This isn’t just a part; it’s the solution to getting your workhorse vehicle dependable again.
The Simple, Reliable Fix for Complex Problems
This isn’t a generic, one-size-fits-all module. We take the guesswork and dealer-level expense out of the equation. When you order, you provide us with your Savana’s Vehicle Identification Number (VIN). We then program this PCM specifically for your vehicle, loading it with the latest official GM software updates. This ensures perfect communication between your engine, transmission, and all related systems.
From My Shop to Your Driveway: A Real-World Scenario
“A customer’s ’06 Savana 3500 came into my shop last month. It was a plumber’s van, and it would randomly stall at intersections and then refuse to restart for 10-15 minutes. The check engine light was on, but the codes were all over the placeโrandom misfires, O2 sensor faults, communication errors. After confirming the wiring and sensors were good, we identified a classic heat-soak failure in the original PCM. Once the module got hot, the internal processor would fail. We installed a VIN-programmed module just like this one, and the van has been running flawlessly ever since. It’s a common failure I’ve diagnosed on dozens of these GM work vans.”
What You Get with This Programmed PCM:
- โ VIN-Specific Programming: We flash the module with your vehicle’s exact calibration files and the newest GM software for optimal performance and efficiency.
- โ Direct Solution: Corrects common failure symptoms like harsh shifting, no-start conditions, stalling, and persistent, hard-to-diagnose check engine lights.
- โ Plug-and-Play: Once you receive the module, it’s ready for installation. In most cases, no additional on-vehicle programming is required.
- โ Broad Compatibility: This module, part number 12602801, is a direct replacement for service numbers 12589462 and 89017749, and fits a wide range of GM trucks and vans.
Easy Installation for Your 2005-2007 Savana 3500 PCM
You don’t need to be a master technician to complete this job. Follow these simple steps to get your vehicle running right. The PCM in your Savana van is typically located in the engine compartment on the driver’s side.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Locate the PCM: Find the module in the driver’s side rear of the engine compartment. It will have several large electrical connectors attached.
- Disconnect Connectors: Carefully release the locking tabs on each electrical harness connector and pull them straight out from the module. Never force them.
- Remove the Old Module: Unbolt the mounting hardware holding the original PCM in place and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed PCM in the same location and secure it with the original hardware.
- Reconnect Everything: Firmly plug the electrical connectors back into the new module until they click into place. Reconnect your negative battery terminal.
- Final Step: Your vehicle may require a security relearn procedure, which can typically be done without special tools by cycling the key. Instructions are widely available or can be provided upon request.
Expert Pro Tip: Before installing your new PCM, take a moment to inspect the connector terminals on your vehicle’s wiring harness. Look for any signs of corrosion (green or white powder) or backed-out pins. Use a small brush and electrical contact cleaner to ensure the connections are pristine. A poor connection is one of the most common reasons for a repeat failure, and this simple step can save you hours of future headaches.
Guaranteed Fitment
This part is a confirmed fit for your 2005-2007 GMC Savana 3500, as well as a wide variety of other GM vehicles including the Express, Silverado, Sierra, Suburban, and more. Please verify your part number or contact us with your VIN to ensure perfect compatibility.