Restore Peak Performance and Reliability to Your Vehicle
As a technician with over two decades of experience under the hood, I’ve seen firsthand the frustration that a failing Engine Control Module (ECM) can cause. Your vehicle might be experiencing a range of baffling issues: a persistent Check Engine Light, sudden stalling, rough idling, poor fuel mileage, or even a complete no-start condition. These aren’t just annoyances; they’re signs that the very brain of your engine is struggling. This 2006 CTS Engine Control Module is the definitive, reliable solution to get your vehicle running smoothly and efficiently again.
What sets this module apart is our commitment to a seamless repair. Forget about expensive towing to a dealership and waiting days for programming. We handle the critical first step for you. Before this ECM ships, my team and I will flash it with the very latest, most stable software updates directly from GM, all tailored specifically to your vehicle’s unique Vehicle Identification Number (VIN). This means it arrives at your door ready for installation, eliminating the need for specialized, costly scan tools or additional programming services. It’s a direct-fit, plug-and-play solution designed to restore factory performance and clear those stubborn diagnostic trouble codes for good.
Case Study: A Tricky Diagnosis
I remember a 2008 Chevy Trailblazer that came into the shop with a ghost of a problem. The owner complained of intermittent stalling at stoplights and a check engine light that came and went. We scanned it and found a U0100 (Lost Communication with ECM/PCM) and a P0606 (ECM/PCM Processor Fault). We checked all the basics—power, grounds, and the CAN bus network wiring. Everything looked perfect. On a hunch, we tapped on the original ECM while the engine was running, and it immediately stalled. The internal processor was failing under vibration and heat. We installed one of these pre-programmed modules, and the vehicle ran perfectly. It’s a classic example of how a solid part, correctly programmed, is the only true fix for internal module failure.
Is Your Vehicle Exhibiting These ECM Failure Signs?
A failing engine computer can manifest in numerous ways. If you’re experiencing any of the following, a faulty ECM is a likely culprit:
- ✔ Check Engine Light is illuminated with no obvious cause.
- ✔ Stored diagnostic trouble codes (DTCs) like P0601, P0606, or U0100.
- ✔ Engine cranks but refuses to start.
- ✔ Intermittent stalling or hesitation while driving.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Failure to pass state emissions testing.
- ✔ Other modules on the vehicle network report a loss of communication with the ECM.
A Straightforward Guide to Installation
Replacing your 2006 CTS Engine Control Module is a manageable task for a confident DIYer. While specific locations vary by model (see fitment list), the general process is consistent.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent any accidental power surges.
- Locate the ECM: The module is typically found in the engine bay, often on the firewall, behind the fan shroud, or near the air cleaner box. Refer to our detailed fitment list for clues on your specific model’s location.
- Disconnect Connectors: Carefully disengage the locking tabs on the electrical wiring harnesses and pull them straight out from the module. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware, as you may need to reuse it.
- Install the New Module: Mount your new, pre-programmed ECM securely. Reconnect the wiring harnesses, ensuring they click firmly into place.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Security Relearn (If Necessary): While we program the VIN, some GM vehicles require a simple security relearn procedure to sync the new ECM with the anti-theft system. This typically involves cycling the key and can be done without any special tools.
Verified Fitment Across a Wide Range of GM Vehicles
This ECM is a direct replacement for service number 12630457 and is also interchangeable with part numbers 12590032, 12602044, 12603530, 12605843, 12607096, and 19210737. Please verify your part number or match your vehicle in the list below to ensure compatibility.
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
Do I need to do anything after installing this ECM?
Do I need to do anything after installing this ECM?
In most cases, no. The module is programmed to your VIN and has the latest software. However, some GM vehicles may require a simple, tool-free security relearn procedure that takes about 10-15 minutes. This involves cycling the ignition key to allow the vehicle’s anti-theft system to recognize the new ECM. We include instructions for this simple process if it applies to your vehicle.
What is a VIN and why do you need it?
Do I need to do anything after installing this ECM?
In most cases, no. The module is programmed to your VIN and has the latest software. However, some GM vehicles may require a simple, tool-free security relearn procedure that takes about 10-15 minutes. This involves cycling the ignition key to allow the vehicle’s anti-theft system to recognize the new ECM. We include instructions for this simple process if it applies to your vehicle.
How do I find my VIN?
Do I need to do anything after installing this ECM?
In most cases, no. The module is programmed to your VIN and has the latest software. However, some GM vehicles may require a simple, tool-free security relearn procedure that takes about 10-15 minutes. This involves cycling the ignition key to allow the vehicle’s anti-theft system to recognize the new ECM. We include instructions for this simple process if it applies to your vehicle.
Is this a better option than getting my old module repaired?
Do I need to do anything after installing this ECM?
In most cases, no. The module is programmed to your VIN and has the latest software. However, some GM vehicles may require a simple, tool-free security relearn procedure that takes about 10-15 minutes. This involves cycling the ignition key to allow the vehicle’s anti-theft system to recognize the new ECM. We include instructions for this simple process if it applies to your vehicle.