Restore Peak Performance to Your GM Vehicle
Is your Trailblazer, Envoy, or other GM vehicle acting up? Experiencing frustrating issues like a persistent check engine light, sudden stalling, rough idling, or a complete no-start condition? These are classic signs of a failing Engine Control Module (ECM). As the central computer for your vehicle’s powertrain, when the ECM falters, it can cause a cascade of problems that leave you stranded and facing expensive diagnostic bills. Don’t let a faulty computer dictate your vehicle’s reliability. This direct-replacement ECM, part number 12607096, is the definitive solution to get you back on the road with confidence.
From the Diagnostic Bay
I remember a 2008 Trailblazer that came into my shop on a tow truck. The owner was at his wit’s end. He’d been to two other places for an intermittent no-start and a check engine light that would come and go. He was getting communication error codes (U-codes) along with a dreaded P0601 for an internal memory fault. The issue was that the failure was intermittent; sometimes the truck ran fine. After checking the main power and ground circuits to the ECM, we determined the module itself was failing internally, likely due to heat cycles and vibration over the years. We installed one of these VIN-programmed modules, performed the security relearn, and the truck fired up instantly. All codes were gone, and the customer called a week later to say it had never run better. This isn’t just a part; it’s a permanent fix.
Is Your Vehicle Showing These Symptoms?
A failing ECM can manifest in many ways. If you’re noticing any of the following, it’s a strong indicator that your engine computer needs attention. Replacing it can solve these issues and prevent further damage to related components.
- ✔ Check Engine Light is illuminated with codes like P0601, P0606, or U0100.
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained stalling or cutting out while driving.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Engine misfires or runs rough, even after replacing plugs and coils.
- ✔ Failure to pass an emissions inspection due to communication errors.
A Straightforward Guide to Installation
Replacing the ECM on your Trailblazer is a manageable job for a DIYer. Our pre-programmed module saves you a trip to the dealership. Just follow these general steps:
- 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: On most Trailblazers and Envoys, the ECM is located on the driver’s side (LH) of the engine block, below the intake manifold.
- Disconnect the Connectors: Carefully unlatch and remove the electrical harness connectors from the old module. Inspect them for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. It’s typically held on by a few small bolts.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and securely fasten the bolts.
- Reconnect Everything: Plug the electrical connectors firmly into the new module until they click. Reconnect the negative battery terminal.
- Perform Security Relearn: In most cases, you will need to perform a security relearn procedure to sync the new ECM with your vehicle’s anti-theft system. This can typically be done with the ignition key and takes about 30 minutes. Instructions are readily available online or in your service manual.
Verified Vehicle Compatibility
This ECM is a direct fit for a wide range of General Motors vehicles. It is interchangeable with service numbers 12590032, 12602044, 12603530, 12605843, 12607096, 12630457, and 19210737. Please verify your vehicle is on this list. Providing your VIN at checkout is essential for us to program the module correctly.
ACADIA 08 (PCM), (behind fan shroud), ID 19210737
ALLURE 08-09 5.3L
AURA 08-09 2.4L w/hybrid; 3.6L
CANYON 08
COBALT 06 2.4L (VIN B)
COLORADO 08
CTS 06 V-Series, ID 12603530
DEVILLE 05 ID 12590032
DTS 06, 08
ENCLAVE 08 ID 12607096 or 19210737
ENVOY 07-08 5.3L
ENVOY 08-09 4.2L
G6 06-08 3.6L
G6 09 3.6L, ID 12607096 or 19210737
GRAND PRIX 08 5.3L
HHR 06 2.4L
HUMMER H3 08
IMPALA 06 3.5L, 3.9L
IMPALA 08-09 5.3L
ION 06 2.4L (opt LE5)
ISUZU ASCENDER 08 4.2L
ISUZU I-290 08
ISUZU I-370 08
LACROSSE 08-09 5.3L
LUCERNE 06, 08 4.6L
MALIBU 06 3.9L
MALIBU 08-10 2.4L w/hybrid
MALIBU 08-09 3.6L
MONTE CARLO 06 3.5L, 3.9L
MONTANA 06 SV6, 3.9L
MONTANA 08-09
OUTLOOK 08
PURSUIT 06 2.4L
RAINIER 07 5.3L
RELAY 06 3.9L
SAAB 9-7X 07 8 cyl
SAAB 9-7X 08 5.3L, 6.0L
SOLSTICE 06
SRX 08 4.6L
STS 06 4.4L
STS 08 4.4L, 4.6L
TERRAZA 06 3.9L
TRAILBLAZER 07 5.3L, 6.0L
TRAILBLAZER 08-09 4.2L
TRAILBLAZER 08 5.3L, 6.0L
UPLANDER 06, 08-09 3.9L
VUE 08-09 2.4L (VIN Z)
VUE 08-10 3.6L
XLR 06, 09 4.4L
XLR 08-09
Frequently Asked Questions
Frequently Asked Questions
What does ‘VIN Programmed’ mean?
It means we load the latest GM-certified software for your specific vehicle onto the module using your Vehicle Identification Number (VIN). This ensures the ECM works correctly with your engine, transmission, and options, eliminating the need for expensive programming at a dealership.
Do I need to do anything after installing this ECM?
Yes, after installation, you will likely need to perform a security relearn procedure (also known as a CASE relearn or Passlock relearn). This syncs the new ECM to your vehicle’s anti-theft system and can be done without special tools in about 30 minutes.
How do I find my vehicle’s VIN?
Your 17-digit VIN can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side of the dashboard, visible through the windshield.
Is this a reliable part?
Absolutely. This is a high-quality replacement module designed to meet or exceed original equipment specifications. We ensure it is loaded with stable, updated software for long-lasting performance.
What if my original part number is not 12607096?
This module is a direct replacement for several service numbers, including 12590032, 12602044, 12603530, and others listed in the compatibility section. As long as your vehicle is listed, this part will work, as we program it specifically for your VIN.