Restore Your Pontiac G6’s Performance and Reliability
If you’re dealing with frustrating and unpredictable engine problems in your 2006-2009 Pontiac G6, a failing Engine Control Module (ECM) is often the culprit. As a mechanic with over two decades of experience, I’ve seen firsthand how a faulty ECM can cause a cascade of issues that seem impossible to diagnose—from random stalling and no-start conditions to poor fuel economy and a persistent Check Engine Light. This isn’t just an inconvenience; it’s a matter of reliability and safety. This replacement 2006-2009 G6 Engine Module is the straightforward, dependable solution to get your vehicle running correctly again.
The beauty of this part is the service that comes with it. We eliminate the most significant hurdle in modern auto repair: module programming. Forget expensive dealership visits or the need for specialized scan tools. Simply provide us with your vehicle’s VIN (Vehicle Identification Number) during checkout, and our technicians will flash this ECM with the latest, most stable software directly from GM. It arrives at your door ready for a simple, plug-and-play installation, restoring the precise fuel delivery, ignition timing, and emissions control your G6 was designed for.
A Technician’s Notebook: The Phantom Misfire Case
I remember a 2008 G6 with the 3.6L V6 that came into my shop with a problem that had stumped two other mechanics. The owner reported intermittent rough idling and a flashing check engine light, but only after the car had been running for 20-30 minutes. We checked everything—plugs, coils, injectors, even compression. Everything tested fine. The codes were for random misfires. On a hunch, I monitored the live data stream from the ECM and noticed that the injector pulse width for cylinder 3 would suddenly become erratic as the engine bay heated up. The ECM itself was developing an internal fault under thermal stress. We swapped in a pre-programmed module just like this one, and the problem vanished instantly. It’s a classic example of how a failing 2006-2009 G6 Engine Module can mimic other, more common failures.
Is Your G6 Showing These Symptoms?
A failing ECM can manifest in various ways. If you’re experiencing any of the following, it’s a strong indicator that your engine’s computer needs attention. Don’t let these issues leave you stranded.
- ✔ Check Engine Light is on with codes like P0601, P0606 (Internal Control Module Failure) or U0100 (Lost Communication With ECM/PCM).
- ✔ Engine cranks but refuses to start.
- ✔ Unexplained stalling or cutting out while driving.
- ✔ Noticeable decrease in fuel economy.
- ✔ Rough or erratic engine idle.
- ✔ Harsh or incorrect shifting from the automatic transmission.
- ✔ Apparent loss of power and poor acceleration.
A Straightforward Guide to Installation
Installing your pre-programmed 2006-2009 G6 Engine Module is a job most DIYers can handle in under an hour with basic hand tools. This process avoids the need for a costly security relearn procedure at a dealership.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental contact.
- Locate the ECM: On the Pontiac G6, the Engine Control Module is typically located in the LH (driver’s side) front of the engine compartment, often near the air filter housing or firewall.
- Disconnect Connectors: Carefully release the locking tabs on the electrical wiring harnesses and pull them straight out from the old module. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the mounting hardware holding the old ECM in place and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed ECM in the same location and secure it with the original hardware.
- Reconnect Everything: Firmly plug the wiring harnesses back into the new module until they click into place. Reconnect the negative battery terminal.
- Final Check: Turn the key to the ‘ON’ position (without starting) for 10-15 seconds to allow the vehicle’s systems to recognize the new ECM. Then, start the engine. Your vehicle is ready to drive.
Verified Vehicle Compatibility
This module is a direct replacement for service number 19210737 and is interchangeable with 12590032, 12602044, 12603530, 12605843, 12607096, and 12630457. Please verify your part number or match your vehicle in the list below to ensure proper fitment.
COLORADO 08 Electronic Control Module; (RH firewall)
ENVOY 07-08 Electronic Control Module; 5.3L (LH engine)
ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 12607096
G6 09 Electronic Control Module; (LH front engine compartment), 3.6L, ID 19210737
MONTE CARLO 06 Electronic Control Module; (lower part of air cleaner box), 3.5L
XLR 09 Electronic Control Module; (RH front engine compartment), ID 12607096
AURA 08-09 Electronic Control Module; (RH firewall), 2.4L, w/hybrid
DTS 06 Electronic Control Module
DEVILLE 05 Electronic Control Module; (LH engine compartment), ID 12590032
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12605843
IMPALA 06 Electronic Control Module; (lower part of air cleaner box), 3.5L
LACROSSE 08-09 Electronic Control Module; (lower air cleaner housing), 5.3L
STS 06 Electronic Control Module; (LH frame rail), 4.4L
TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 12636660
UPLANDER 09 Electronic Control Module; (LH engine compartment), (3.9L)
ISUZU ASCENDER 08 Electronic Control Module; (4.2L, LH engine), ID 19210737
SAAB 9-7X 07 Electronic Control Module; (LH engine), 8 cylinder
TRAILBLAZER 07 Electronic Control Module; (LH engine), 5.3L
ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 19210737
LUCERNE 08 Electronic Control Module; (lower part of air cleaner box), 4.6L, ID 12607096
MONTE CARLO 06 Electronic Control Module; (lower part of air cleaner box), 3.9L
RAINIER 07 Electronic Control Module; (LH engine), 5.3L
ISUZU ASCENDER 08 Electronic Control Module; (4.2L, LH engine), ID 12607096
CTS 06 Electronic Control Module; (RH engine compartment), V-Series, ID 12603530
STS 08 Electronic Control Module; (LH frame rail), 4.6L
G6 06 Electronic Control Module; (LH front engine compartment), ID 12603530
G6 08 Electronic Control Module; (LH front engine compartment), 3.6L
ION 06 Electronic Control Module; 2.4L (opt LE5)
MALIBU 06 Electronic Control Module; 3.9L
MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 2.4L, w/hybrid
RELAY 06 Electronic Control Module; (LH engine compartment), 3.9L
VUE 08-09 Electronic Control Module; 2.4L, VIN Z (8th digit, opt LAT)
OUTLOOK 08 Electronic Control Module; (behind fan shroud)
SOLSTICE 06 Electronic Control Module; (LH front frame rail)
VUE 08 Electronic Control Module; 3.6L
VUE 09 Electronic Control Module; 3.6L, VIN 7 (8th digit, opt LY7)
ACADIA 07-08 Electronic Control Module; (behind fan shroud), ID 12607096 (ECM)
AURA 08-09 Electronic Control Module; (RH firewall), 3.6L
ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 19210737
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12603530
GRAND PRIX 08 Electronic Control Module; (lower air cleaner box), 5.3L
HHR 06 Electronic Control Module; (LH rear engine compartment), 2.4L
STS 08 Electronic Control Module; (LH frame rail), 4.4L
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12590032
ISUZU I-290 08 Electronic Control Module; (RH firewall)
LUCERNE 06 Electronic Control Module; (lower part of air cleaner box), 4.6L
MALIBU 09-10 Electronic Control Module; 2.4L, w/hybrid
UPLANDER 08 Electronic Control Module; (LH engine compartment), (3.9L), ID 19210737
IMPALA 06 Electronic Control Module; (lower part of air cleaner box), 3.9L
MONTANA 06 Electronic Control Module; (LH engine compartment), (SV6), 3.9L
TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 19210737
ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 12636660
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12602044
TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 12607096
TRAILBLAZER 09 Electronic Control Module; (LH engine), 4.2L
CANYON 08 Electronic Control Module; (RH firewall)
COBALT 06 Electronic Control Module; (LH front engine compartment), 2.4L (VIN B, 8th digit, 4-146)
ISUZU I-370 08 Electronic Control Module; (RH firewall)
MALIBU 09 Electronic Control Module; 3.6L
SRX 08 Electronic Control Module; (LH engine compartment), (4.6L)
SAAB 9-7X 08 Electronic Control Module; (LH engine), 5.3L
ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 12607096
G6 09 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12607096
IMPALA 08-09 Electronic Control Module; (lower part of air cleaner box), 5.3L
XLR 06 Electronic Control Module; (RH front engine compartment), 4.4L
XLR 08 Electronic Control Module; (RH front engine compartment)
ENVOY 09 Electronic Control Module; (LH engine), 4.2L
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12607096
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12618163
LUCERNE 08 Electronic Control Module; (lower part of air cleaner box), 4.6L, ID 19210737
MONTANA 08-09 Electronic Control Module; (LH engine compartment)
PURSUIT 06 Electronic Control Module; (LH front engine compartment), 2.4L
VUE 10 Electronic Control Module; 3.6L
ACADIA 08 Electronic Control Module; (behind fan shroud), ID 19210737 (PCM)
DTS 08 Electronic Control Module
TERRAZA 06 Electronic Control Module; (LH engine compartment), 3.9L
TRAILBLAZER 07 Electronic Control Module; (LH engine), 6.0L
SAAB 9-7X 08 Electronic Control Module; (LH engine), 6.0L
HUMMER H3 08 Electronic Control Module; (RH firewall)
MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 3.6L
UPLANDER 08 Electronic Control Module; (LH engine compartment), (3.9L), ID 12607096
UPLANDER 06 Electronic Control Module; (LH engine compartment), 3.9L
Frequently Asked Questions
What exactly is VIN programming?
VIN programming is the process of loading your car’s specific Vehicle Identification Number and factory software into the ECM. This ensures the module communicates perfectly with your car’s other systems, like the transmission, anti-lock brakes, and security system, just as the original one did.
Do I need to do anything after I install this part?
No. Because this module comes pre-programmed to your VIN, there are no additional steps required. Once installed, your vehicle is ready to drive. In some rare cases, a Case or Crankshaft Variation Relearn may be needed if a specific code appears, but this can be done by most local repair shops.
How do I provide my VIN?
After you complete your purchase, you will receive an email prompting you for your vehicle’s 17-digit VIN. You can also add it as a note during the checkout process. We cannot ship your part until we receive this information.
Is this a brand new part?
This is a high-quality, inspected, and tested OEM part that has been professionally prepared for resale. Each unit is verified to be fully functional before being programmed with the latest GM software and shipped to you.
How can I be sure this is the correct part for my car?
The best way is to match the service number from your existing module to one of the numbers listed (19210737, 12590032, etc.). If you cannot access your module, you can use the detailed fitment list on this page or contact us with your VIN, and we will happily verify compatibility for you.