Restore Your Vehicle’s Core Performance
Is your Pontiac G6 or other GM vehicle suffering from baffling issues like stalling, no-start conditions, a persistent check engine light, or erratic engine behavior? After 20 years in the bay, I’ve seen these symptoms countless times, and they often point directly to a failing Engine Control Module (ECM). This isn’t just a part; it’s the brain of your engine, and when it falters, your vehicle’s reliability and performance suffer. This is the direct, dependable solution you need to get your car running like it should.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the hassle and high cost out of the equation by programming this 2006-2009 G6 Engine Control Module specifically to your vehicle’s VIN. This means it arrives at your door with the latest factory software from GM already loaded. You can skip the expensive trip to the dealership for programming—a savings of time and money that both DIYers and professional shops can appreciate.
A Technician’s Notebook
I remember a 2009 Pontiac G6 with the 3.6L V6 that came into the shop on a tow truck. The customer was frustrated; it would run fine for days, then suddenly die at a stoplight and refuse to restart for an hour. No consistent codes, just a random U0100 (Lost Communication with ECM) every now and then. We checked grounds, power feeds, and the CAN bus network—all solid. On a hunch, I monitored the 5-volt reference circuit from the ECM. After letting the car idle for 45 minutes, we saw the voltage start to fluctuate wildly before dropping to zero, killing the engine. The ECM was failing internally under heat soak. We installed one of these VIN-programmed modules, and the car has been running perfectly for the owner ever since. It’s often these intermittent, heat-related failures that are the hardest to diagnose but the easiest to fix with the right part.
Is Your Vehicle Showing These Symptoms?
A faulty ECM can manifest in numerous ways. If you’re experiencing any of the following, a failing engine computer is a likely culprit:
- ✔ Check Engine Light is on with communication codes (like U0100) or internal processor codes (P0601, P0606).
- ✔ Engine cranks but refuses to start.
- ✔ Stalling for no apparent reason, either while driving or at idle.
- ✔ Noticeable decrease in fuel economy.
- ✔ Poor or erratic automatic transmission shifting.
- ✔ Misfires or rough idle even after replacing plugs and coils.
- ✔ The vehicle’s anti-theft or security system engages randomly.
A Straightforward Guide to Installation
Installing your pre-programmed 2006-2009 G6 Engine Control Module is a manageable job for a confident DIYer. For the Pontiac G6, the ECM is typically located in the front of the engine compartment on the driver’s side.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow capacitors to discharge.
- Locate the ECM: On the G6, find the module in the LH (driver’s side) front 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. Never force them. Inspect connectors for any corrosion or bent pins.
- Remove the Old Module: Unbolt the mounting hardware holding the old ECM in place. It’s typically held by a few 10mm bolts.
- Install the New Module: Seat your new, pre-programmed module in the mounting bracket and secure it with the bolts. Do not overtighten.
- Reconnect and Secure: Plug the electrical connectors back into the new ECM. You should hear or feel a click as they lock into place. Reconnect your battery terminal.
- Security Relearn (If Necessary): In many GM vehicles, you may need to perform a simple security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times before starting the engine. Check your vehicle’s specific procedure if it doesn’t start immediately.
Verified Vehicle Compatibility
This ECM, part number 19210737, is a direct replacement for a wide range of GM vehicles and is interchangeable with service numbers 12590032, 12602044, 12603530, 12605843, 12607096, and 12630457. Please verify your model and options below. Matching the ID number from your original part is always the best practice.
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
Do I need to do any programming to this module?
No. This is the key benefit of our service. We program the module with the latest GM software using the VIN you provide during checkout. It arrives ready for installation, saving you a trip to the dealer.
Where do I find my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, and on your vehicle’s registration and insurance documents.
Is this compatible with my old part number?
This ECM (19210737) is a direct, interchangeable replacement for several service numbers, including 12590032, 12602044, 12603530, and more. Please check the detailed fitment list to confirm compatibility with your specific vehicle.
What if my car has an anti-theft system?
Our programming service correctly pairs the module to your VIN, which handles most security parameters. However, some GM vehicles may require a simple, key-on/key-off security relearn procedure after installation. This procedure takes about 30 minutes and does not require any special tools.
Why should I buy from you instead of a junkyard?
A junkyard ECM will not be programmed for your car’s specific VIN and options, and you have no idea about its history or condition. Our modules are tested, verified, and programmed with the newest software, ensuring a reliable, long-term fix that is truly plug-and-play.