Restore Peak Performance to Your GM Vehicle
Is your 2006 Pontiac Montana, Chevrolet Uplander, or Buick Rendezvous suffering from perplexing engine issues? An illuminated Check Engine Light, erratic shifting, poor fuel economy, or even a no-start condition can often be traced back to a failing Powertrain Control Module (PCM). This component is the brain of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shift points. When it fails, the entire system’s performance and reliability are compromised. This replacement Powertrain Control Module, service number 12600928, is the definitive solution to get your vehicle running smoothly and efficiently again.
The Plug-and-Play Solution for Your 2006 Montana Powertrain Control Module
Forget expensive trips to the dealership and the hassle of programming a blank module. We take the complexity out of the repair process. When you purchase this PCM, we will flash it with the latest official GM software updates specifically for your vehicle. All we need is your Vehicle Identification Number (VIN) at checkout. This ensures that the module you receive is a 100% compatible, plug-and-play unit, calibrated to the exact specifications of your vehicle’s original equipment. This process restores factory performance and can often resolve issues caused by outdated factory software.
From the Diagnostic Bay
We had a 2006 Chevy Uplander come into the shop with a persistent P0300 (Random Misfire) code. The owner had already spent a small fortune replacing spark plugs, wires, and even the coil pack, but the check engine light always returned. Diagnostics showed fuel trims were erratic and ignition timing was inconsistent under load. Instead of throwing more parts at it, we tested the PCM’s driver circuits. We found the injector driver for cylinder 3 was failing intermittently, causing the misfire. We installed a VIN-programmed PCM, performed the required security relearn, and the van ran perfectly. It’s a classic case where the root cause was the computer itself, not the components it controls. A properly programmed replacement is key.
Common Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Vehicle fails to start or starts intermittently.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Engine stalling, stuttering, or misfiring while driving.
- ✔ Failure to pass state emissions testing.
- ✔ Communication errors with diagnostic scan tools.
Guaranteed Fitment & Compatibility
This module is a direct replacement for service numbers 12600928 and 19210070. It is guaranteed to fit and function in the following vehicles equipped with the 3.5L engine (unless otherwise specified):
- 2006 Pontiac G6 (Electronic Control Module; LH front engine compartment, ID 12600928)
- 2006-2007 Buick Rendezvous (Electronic Control Module; 3.5L)
- 2006 Chevrolet Uplander (Electronic Control Module; LH engine compartment, 3.5L)
- 2006 Pontiac Torrent (Electronic Control Module; LH engine compartment)
- 2006 Chevrolet Malibu (Electronic Control Module; 3.5L)
- 2006 Chevrolet Equinox (Electronic Control Module; LH engine compartment)
- 2006 Buick Terraza (Electronic Control Module; LH engine compartment, 3.5L)
- 2006 Pontiac Montana SV6 (Electronic Control Module; LH engine compartment, 3.5L)
By providing your VIN, you ensure that this 2006 Montana Powertrain Control Module is correctly configured for your specific application, taking all factory options into account for a seamless installation.
Installation is straightforward for any experienced DIYer or professional technician. After installing the module, a security relearn procedure may be required to sync the new PCM with your vehicle’s anti-theft system. This procedure is simple and can typically be done without special tools. Instructions are widely available online or in your vehicle’s service manual.
Frequently Asked Questions
Do I need to send you my old module?
No, there is no core charge or need to send your old part back to us. This is a direct purchase of a replacement module.
What happens after I place my order?
After you complete your purchase, you must provide us with your vehicle’s 17-digit VIN. You can add this in the notes at checkout or reply to your order confirmation email. We cannot program and ship your module without the VIN.
Is this part difficult to install?
The physical installation is typically simple, involving disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. The most critical step after installation is performing the vehicle’s security relearn procedure, which pairs the new PCM to your keys and anti-theft system. This procedure varies by model but usually involves a sequence of key turns.
Will this fix my vehicle’s specific problem?
This PCM will correct any issues directly caused by a faulty module. While the symptoms listed are common indicators of PCM failure, it is essential to have a proper diagnosis performed to rule out other potential causes, such as faulty sensors, wiring, or mechanical components.
What if my part number isn’t an exact match?
This module replaces service numbers 12600928 and 19210070. If your module has a different number, please contact us with your vehicle’s year, make, model, and VIN to ensure we can provide you with the correct compatible part.