Restore Peak Performance and Reliability to Your GM Vehicle
If you’re dealing with a frustrating check engine light, erratic engine behavior, or a no-start condition, a failing Engine Control Module (ECM) is often the culprit. As the central computer of your vehicle, the ECM manages everything from fuel mixture and ignition timing to transmission shifting. When it fails, it can cause a cascade of problems that leave you stranded. This replacement ECM, part number 19210737, is the definitive solution to get your 2007-2009 Trailblazer ECM and a wide range of other GM vehicles back on the road with confidence.
What sets this module apart is our professional programming service. Forget expensive dealership visits and the need for specialized scan tools. Before we ship your part, our technicians will flash it with the latest GM-certified software updates, specifically matched to your vehicle using your VIN. This ensures seamless integration and optimal performance right out of the box, restoring the vehicle’s original drivability and fuel efficiency.
From the Diagnostic Bay
I remember a 2008 Trailblazer that came into the shop with a ghost of a problem. The owner complained of random stalling at stoplights and an occasional hard start. There were no consistent trouble codes, just a generic P0606 (ECM Processor Fault) that would pop up and disappear. After checking all the usual suspects—fuel pressure, sensors, wiring—we focused on the ECM. On these models, heat cycles and vibrations can cause internal solder joints to fail over time, leading to these intermittent issues. We swapped in a VIN-programmed ECM just like this one, and the problem was solved instantly. The customer was thrilled to have his reliable daily driver back without a massive dealership bill.
Is Your Vehicle Showing These Symptoms?
A faulty ECM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Check Engine Light (CEL) is illuminated, often with codes like P0601, P0602, P0606, or U-series communication codes.
- ✔ Engine cranks but refuses to start.
- ✔ Unexplained drop in fuel economy.
- ✔ Rough or unstable idle.
- ✔ Engine stalling or hesitating during acceleration.
- ✔ Automatic transmission shifting erratically or harshly.
- ✔ Apparent loss of power.
A Straightforward Guide to Installation
Installing your new 2007-2009 Trailblazer ECM is a manageable job for a DIYer with basic tools. Our pre-programming service handles the most complex part of the job for you. While specific locations vary by model (e.g., on the LH side of the engine for a Trailblazer, behind the fan shroud on an Acadia), the general process is similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes for the system capacitors to discharge.
- Locate the ECM: Find the existing Engine Control Module on your vehicle. Refer to the fitment list below for common locations.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old ECM. They often have locking tabs that need to be released. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed ECM in place and securely fasten it.
- Reconnect Everything: Plug the wiring harnesses firmly into the new module until they click. Reconnect the negative battery terminal.
- Final Steps: Depending on your vehicle, a security relearn procedure may be necessary. This can typically be done without special tools by cycling the key. Instructions are widely available online or in service manuals.
Verified Vehicle Compatibility
This ECM (service no. 19210737) is a direct replacement for a vast number of GM cars, trucks, and SUVs. It is interchangeable with part numbers 12590032, 12602044, 12603530, 12605843, 12607096, and 12630457. To guarantee a perfect match, please provide your VIN upon purchase. Our team will verify fitment and program the module accordingly. See the extensive list below for confirmed models.
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
Frequently Asked Questions
How does the VIN programming process work?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). Our technicians use this number to access the latest GM software for your specific vehicle and flash it onto the module before shipping. This ensures it works correctly with your vehicle’s options and security system.
Is this a simple plug-and-play installation?
Yes, for the vast majority of vehicles. Because we program the module to your VIN, it eliminates the need for you to have it programmed. In some cases, a simple ‘security relearn’ or ‘CASE relearn’ procedure may be required after installation, which can usually be done without any special tools.
Do I need to send my old ECM back (core charge)?
No, there is no core charge associated with this purchase. You can keep or dispose of your old module at your convenience.
How do I find my current ECM’s service number?
The service number is printed on the label of your existing ECM. You can compare it to the interchangeable numbers listed (12590032, 12602044, etc.) to help confirm compatibility. However, providing your VIN is the most accurate method for us to guarantee a match.
What if I have questions during installation?
We are committed to your success. If you run into any issues or have questions, our experienced support team is here to help guide you through the process.