Restore Peak Performance to Your Cadillac DTS
Is your 2006 Cadillac DTS running rough, stalling unexpectedly, or displaying a persistent check engine light? These are classic signs of a failing Engine Control Module (ECM), the central computer that manages your engine’s performance, fuel economy, and emissions. A faulty ECM can be a frustrating problem, often leading to incorrect diagnoses and unnecessary repairs. This replacement Engine Control Module is the definitive solution, arriving at your door programmed with the latest GM software updates specifically for your vehicle’s VIN.
From the Diagnostic Bay: The Intermittent No-Start Mystery
I remember a 2006 Cadillac DTS that came into my shop after visiting two other garages. The owner was fed up with an intermittent no-start condition that nobody could pin down. The battery was new, the starter was fine, and the fuel pump checked out. When we hooked up our professional scan tool, we noticed intermittent communication loss with the ECM (U-series codes) and a stored P0601 (Internal Control Module Memory Check Sum Error). These are tell-tale signs of an internal ECM failure. Instead of a costly diagnostic rabbit hole, we installed a VIN-programmed ECM. The vehicle started reliably every time, and the communication codes vanished. This isn’t just a part; it’s a targeted, reliable fix.
Is Your Vehicle Showing These ECM Failure Signs?
- ✔ Persistent and unexplained Check Engine Light (CEL)
- ✔ Engine stalling, stuttering, or misfiring
- ✔ A complete no-start or difficult starting condition
- ✔ Noticeable decrease in fuel efficiency
- ✔ Poor or erratic automatic transmission shifting
- ✔ Communication error codes, such as P0601, P0606, or U0100
- ✔ Failure to pass emissions testing
A Straightforward Guide to Installation
Installing your new ECM is a manageable job for a confident DIYer. By having us program the module beforehand, you skip the expensive trip to the dealership for software flashing. For a 2006 DTS, the ECM is typically located in the engine compartment. Follow these general steps for a successful installation:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any work on the electrical system.
- Locate the ECM: On the DTS, you’ll find the ECM in the engine compartment, often near the air filter housing or on the firewall. It will have several large electrical connectors attached.
- Disconnect and Remove: Carefully release the locking tabs on the electrical connectors and pull them straight out. Then, unbolt the module from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount the new, pre-programmed ECM in the same location. Securely re-attach the electrical connectors, ensuring they click into place.
- Reconnect Power: Re-attach the negative battery terminal.
- Perform Security Relearn: Most GM vehicles require a security relearn procedure to sync the new ECM with your keys. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating two more times. This simple procedure ensures your vehicle will start and run correctly.
Verified Vehicle Compatibility
This ECM, service part number 19210737, is a direct replacement for a wide array of GM vehicles and is interchangeable with part numbers 12590032, 12602044, 12603530, 12605843, 12607096, and 12630457. Please verify your model and options below:
ALLURE 08-09 (lower air cleaner housing), 5.3L
AURA 08-09 (RH firewall), 2.4L, w/hybrid; 08-09 (RH firewall), 3.6L
CANYON 08 (RH firewall)
COBALT 06 (LH front engine compartment), 2.4L
COLORADO 08 (RH firewall)
CTS 06 (RH engine compartment), V-Series, ID 12603530
DEVILLE 05 (LH engine compartment), ID 12590032
DTS 06, 08
ENCLAVE 08 (behind fan shroud), ID 19210737 or 12607096
ENVOY 07-08 5.3L; 08-09 4.2L
G6 06-09 various 3.6L models (verify ID)
GRAND PRIX 08 (lower air cleaner box), 5.3L
HHR 06 (LH rear engine compartment), 2.4L
HUMMER H3 08 (RH firewall)
IMPALA 06 3.5L, 3.9L; 08-09 5.3L
ION 06 2.4L
ISUZU ASCENDER 08 4.2L
ISUZU I-290/I-370 08 (RH firewall)
LACROSSE 08-09 (lower air cleaner housing), 5.3L
LUCERNE 06, 08 4.6L
MALIBU 06 3.9L; 08-10 2.4L w/hybrid; 08-09 3.6L
MONTE CARLO 06 3.5L, 3.9L
MONTANA 06 3.9L; 08-09
OUTLOOK 08 (behind fan shroud)
PURSUIT 06 (LH front engine compartment), 2.4L
RAINIER 07 5.3L
RELAY 06 3.9L
SAAB 9-7X 07 8-cyl; 08 5.3L, 6.0L
SOLSTICE 06 (LH front frame rail)
SRX 08 (LH engine compartment), 4.6L
STS 06 4.4L; 08 4.4L, 4.6L
TERRAZA 06 3.9L
TRAILBLAZER 07 5.3L, 6.0L; 08-09 4.2L
UPLANDER 06, 08-09 3.9L
VUE 08-09 2.4L; 08-10 3.6L
XLR 06 4.4L; 08-09