Is Your 2006 Montana Running Rough, Stalling, or Shifting Erratically?
If you’re dealing with frustrating engine problems in your 2006 Pontiac Montana or another GM vehicle with the 3.5L engine, the root cause might not be a bad sensor or a mechanical failure. After 20+ years of diagnosing these vehicles, I’ve seen countless cases where the Powertrain Control Module (PCM) is the hidden culprit. It’s the brain of your vehicle, and when it starts to fail, the symptoms can be confusing and widespread.
Common Symptoms of a Failing GM 3.5L PCM
A faulty PCM doesn’t always fail completely. Often, it begins with intermittent issues that can drive a mechanic crazy trying to diagnose. You might be experiencing:
- โ Unexplained stalling, especially when coming to a stop or at idle.
- โ Harsh or delayed transmission shifting.
- โ A persistent Check Engine Light, even after replacing sensors.
- โ A complete no-start condition where the engine cranks but won’t fire up.
- โ Poor fuel economy that has gotten noticeably worse.
- โ Communication error codes with other modules on the vehicle.
A Technician’s Real-World Story
“A customer’s 2006 Montana SV6 came in last week with these exact symptoms. It was stalling intermittently at red lights and the transmission would slam into gear. The owner had already spent hundreds replacing the crankshaft position sensor and a transmission solenoid based on generic codes, but nothing worked. We connected our high-level scanner and saw communication dropouts from the PCM. After confirming power and ground to the module were solid, we knew the internal processor was failing. We installed one of our pre-programmed PCMs, and the van ran perfectly. Itโs a classic failure Iโve seen hundreds of times on these 3.5L platforms.”
The Direct Solution: A Pre-Programmed PCM
This isn’t just a replacement part; it’s a complete solution. This Powertrain Control Module, service number 12600928, is the correct, reliable fix for your vehicle’s issues. The most significant benefit we offer is our professional programming service, which is included with your purchase.
Hereโs why thatโs so important: a new PCM from a dealer or a blank one from a parts store is just an empty box. It needs to be programmed with your vehicle’s specific Vehicle Identification Number (VIN) and loaded with the latest GM factory software to function. This typically requires a trip to the dealership and hundreds of dollars in programming fees. We eliminate that entire step.
How Our Process Works
- You purchase this PCM.
- You provide us with your vehicle’s 17-digit VIN.
- Our technicians use your VIN to flash the module with the newest, most stable software updates from General Motors.
- We ship the fully programmed, ready-to-install module directly to you.
Installation and Getting Back on the Road
Installation is straightforward for a DIYer with basic tools. The PCM is located in the LH (driver’s side) front of the engine compartment. Simply disconnect the negative battery terminal, carefully release the locking tabs on the electrical connectors, unbolt the old module, and install the new one. Once connected and the battery is re-attached, your vehicle will start and run correctly, as the module is already configured for your specific van.
Guaranteed Fitment
This module is a direct replacement for service parts 12600928 and 19210070. It is guaranteed to fit and function in the following vehicles, provided you match the engine and options listed:
- โ 2006 Pontiac G6 (with ID 12600928)
- โ 2006-2007 Buick Rendezvous (3.5L)
- โ 2006 Chevrolet Uplander (3.5L)
- โ 2006 Pontiac Torrent
- โ 2006 Chevrolet Malibu (3.5L)
- โ 2006 Chevrolet Equinox
- โ 2006 Buick Terraza (3.5L)
- โ 2006 Pontiac Montana (SV6, 3.5L)
Don’t continue to struggle with a poorly running vehicle. This pre-programmed PCM is the most efficient and cost-effective way to restore your vehicle’s performance and reliability. Order today and get your Montana running like it should.