Restore Your Cadillac’s Performance with a Reliable Engine Control Module
Dealing with a frustrating check engine light, poor performance, or a no-start condition in your 2006 Cadillac CTS can bring your driving experience to a halt. The Engine Control Module (ECM) is the sophisticated brain of your vehicle, managing everything from fuel injection and ignition timing to transmission shifts and emissions. When it fails, the symptoms can be unpredictable and difficult to diagnose. This isn’t just a replacement part; it’s a complete, ready-to-install solution for your vehicle.
Over my two decades in automotive diagnostics, I’ve seen countless drivers spend a fortune chasing symptoms when the root cause was a faulty ECM. Heat cycles, vibration, and age can cause internal components and solder joints to fail, leading to intermittent problems that are maddening to pinpoint. That’s why we offer this high-quality replacement 2006 CTS Engine Module, taking the guesswork and hassle out of the repair. We handle the most critical step for you: programming. Simply provide your vehicle’s VIN during checkout, and our technicians will flash this module with the latest GM-certified software specific to your car. This ensures perfect communication with your vehicle’s other systems, restoring factory performance and reliability without a costly trip to the dealership.
A Technician’s Notebook: The Phantom Stall
A 2006 Cadillac CTS-V came into the shop with an issue that had stumped two other mechanics. The car would run perfectly for 20-30 minutes, then suddenly stall and refuse to restart for an hour. No consistent trouble codes were stored, just a few random communication errors. After checking fuel pressure and spark, which were fine when it was running, I suspected a heat-related failure in the ECM. On the CTS, it’s located in the engine bay where it can get heat-soaked. I used a heat gun to carefully warm the original ECM, and within minutes, the engine sputtered and died. The diagnosis was confirmed. Installing a properly programmed replacement like this one solved the problem permanently, getting the high-performance V-Series back on the road where it belonged.
Is Your Cadillac Showing These Signs?
- ✔ Check Engine Light is on with no obvious cause
- ✔ Engine cranks but will not start
- ✔ Rough or unstable idling
- ✔ Noticeable decrease in fuel economy
- ✔ Hesitation or stalling during acceleration
- ✔ Stored diagnostic trouble codes (DTCs) like P0601, P0606 (Internal Control Module Failure) or U0100 (Lost Communication with ECM)
Your Straightforward ECM Installation Guide
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental contact.
- ✔ Locate the Module: On your 2006 Cadillac CTS, the ECM is typically found in the engine compartment on the right-hand (passenger) side.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be released. Once disconnected, unbolt the module from its mounting bracket.
- ✔ Install the New Module: Bolt the new, pre-programmed ECM into place. Firmly reconnect the electrical harnesses, ensuring they click securely into position.
- ✔ Final Steps: Reconnect the negative battery terminal. Your vehicle may need to complete a security relearn procedure, which can often be done by cycling the key. Start the engine and check for proper operation.
Verified Vehicle Compatibility List
This module is a direct replacement for service number 12607096 and is interchangeable with 12590032, 12602044, 12603530, 12605843, 12630457, and 19210737. While it fits a wide range of GM vehicles, it’s crucial to confirm your specific model and options below. Providing your VIN for programming is the best way to guarantee a perfect match.
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 get this ECM programmed by a dealer?
Do I need to get this ECM programmed by a dealer?
No. The main benefit of our service is that we program the module for you before shipping. Simply provide your VIN at checkout, and it will arrive ready to install, saving you hundreds in dealership programming fees.
What is a VIN and where do I find it?
The VIN (Vehicle Identification Number) is your car’s unique 17-digit serial number. You can find it on the driver’s side of the dashboard (visible through the windshield), on your vehicle’s registration, or on your insurance card.
Is any other setup required after installation?
In most cases, no. Once installed, the pre-programmed module should work immediately. Some vehicles may require a simple security relearn procedure (like turning the key to ‘On’ for 10 minutes), which does not require special tools.
How do I know this will fit my specific car?
This 2006 CTS Engine Module fits a wide variety of GM vehicles. The best way to ensure perfect compatibility is to match the service number from your old module to one of the numbers listed (12607096, 12590032, etc.) and provide us with your VIN for programming.