Programmed 2006 CTS Engine Module ECM 12603530 | VIN Matched
Restore Peak Performance to Your Cadillac
Is your 2006 Cadillac CTS running erratically, stalling unexpectedly, or showing a persistent Check Engine Light? These are classic signs of a failing Engine Control Module (ECM), the electronic brain of your vehicle. A faulty ECM can cripple your car’s performance, fuel economy, and reliability. This isn’t just an inconvenience; it’s a problem that demands a precise and dependable solution. We offer a direct-fit, professionally programmed 2006 CTS Engine Module that restores your vehicle’s factory operation without the exorbitant cost and hassle of a dealership visit.
We take the guesswork out of the repair. 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 all engine and transmission parameters are perfectly calibrated, from fuel injection timing to spark advance. This is the same process a dealer would perform, but delivered directly to your door, ready for installation.
A Technician’s Notebook: The Intermittent No-Start
I had a 2006 CTS-V in my bay that was giving the owner fits. It would start perfectly for a week, then suddenly refuse to crank, only to start again an hour later. No consistent codes, just a random no-start. After checking all the usual suspects—battery, starter, grounds—I hooked up my scope. I found the 5-volt reference signal from the ECM was dropping out intermittently. This tiny electrical flicker was enough to prevent the engine from starting. Replacing the original ECM with a properly programmed unit like this one solved the problem for good. It’s a textbook example of how internal ECM failure can cause the most frustrating, ghost-in-the-machine issues.
Is Your Cadillac Showing These Symptoms?
- ✔ Check Engine Light is on with codes like P0601, P0606 (Internal Module Failure) or U0100 (Lost Communication With ECM).
- ✔ The engine cranks but refuses to start.
- ✔ Stalling, rough idling, or hesitation during acceleration.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Failure to pass state emissions testing.
- ✔ Seemingly unrelated warning lights on the dashboard.
A Straightforward Guide to Installation
Replacing the ECM on your 2006 CTS is a manageable job for a DIYer with basic tools. The module is located in the engine compartment on the right-hand (passenger) side.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the ECM: On the 2006 CTS, you’ll find it mounted in the right-hand side of the engine bay.
- Disconnect the Wiring: Carefully unlatch and remove the electrical connectors. Inspect them for any corrosion or damage before proceeding.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed ECM and securely reconnect the wiring harnesses.
- Reconnect the Battery: Reattach the negative battery terminal.
- Perform Security Relearn: A simple key-cycle procedure is typically required to sync the new ECM with your vehicle’s anti-theft system. This usually involves turning the key to the ‘ON’ position for 10-15 minutes. Consult your owner’s manual or a reliable online resource for the specific steps for your vehicle.
Verified Vehicle Compatibility
This ECM, part number 12603530, is a direct replacement for service numbers 12590032, 12602044, 12605843, 12607096, 12630457, and 19210737. It fits a wide range of GM vehicles. Please verify your specific model and options below.
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 module programmed?
Do I need to get this module programmed?
No. We handle all the programming for you before shipment. Just provide your VIN when you place your order, and the module will arrive with the correct GM software for your vehicle, ready for installation.
What is a ‘security relearn’ and is it difficult?
Do I need to get this module programmed?
No. We handle all the programming for you before shipment. Just provide your VIN when you place your order, and the module will arrive with the correct GM software for your vehicle, ready for installation.
Where do I find my vehicle’s VIN?
Do I need to get this module programmed?
No. We handle all the programming for you before shipment. Just provide your VIN when you place your order, and the module will arrive with the correct GM software for your vehicle, ready for installation.
Will this fix my specific problem?
Do I need to get this module programmed?
No. We handle all the programming for you before shipment. Just provide your VIN when you place your order, and the module will arrive with the correct GM software for your vehicle, ready for installation.
Product Details
Category: GM
eBay Item ID: 205374041669
To program your module, we require your full 17-digit VIN. Please enter it in the payment notes and save to ensure we receive it. Orders without a VIN within our 2-business-day handling period may be canceled, as programming cannot proceed without it.
Shipping
- Processing Time:
Reliably shipped within 2-3 business days.
Warranty
Enjoy peace of mind with a one-year replacement warranty on this part, effective from the date you receive it. Labor costs are not covered.
If the part fails within the warranty period, we’ll replace it with a comparable unit or refund your purchase price, ensuring a hassle-free experience.
Return Address:
Highway71autoparts
9131 Highway 71 NE
Spicer, MN, 56288