Restore Your Engine’s Brain and Get Back on the Road
Is your 2006 Pontiac Pursuit running rough, stalling unexpectedly, or showing a persistent Check Engine Light? These are classic signs of a failing Engine Control Module (ECM). As a technician with over two decades of experience under the hood, I’ve seen firsthand how a faulty ECM can cause a cascade of frustrating and hard-to-diagnose issues. The ECM is the central computer of your vehicle, managing everything from fuel mixture and ignition timing to transmission shifts. When it starts to fail, your car’s performance, reliability, and fuel economy suffer.
This isn’t just a replacement part; it’s a complete solution. We take the guesswork and high dealership costs out of the equation. This module, part number 12590032, will be professionally programmed with the latest official GM software updates specifically for your vehicle’s VIN. This ensures perfect communication between all your car’s systems, restoring the precise performance and efficiency you’ve been missing. Forget about expensive towing or paying for additional programming—this ECM arrives at your door ready for installation.
A Technician’s Notebook: The Intermittent No-Start Nightmare
I remember a 2008 Chevy Impala (which uses this same family of ECMs) that came into my bay with a maddening problem: it would randomly refuse to start. No crank, no click, nothing. The owner had already replaced the battery and starter. After hours of tracing wires and checking grounds, I noticed the scan tool would lose communication with the ECM during the no-start events. We swapped in a pre-programmed ECM, and the problem vanished instantly. The original module’s internal processor was failing under certain temperature conditions, a common issue I’ve seen in dozens of these units. This is why a quality, correctly programmed replacement is critical—it solves the root cause, not just the symptoms.
Common Signs of a Failing ECM
If your vehicle is experiencing any of the following, a faulty engine computer could be the culprit. A professional diagnosis is always recommended, but these are strong indicators:
- ✔ Unexplained Check Engine Light (CEL) illumination
- ✔ Stalling, stumbling, or rough idling
- ✔ Noticeable decrease in fuel efficiency
- ✔ Engine cranks but refuses to start
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Diagnostic Trouble Codes (DTCs) such as P0601 (Internal Control Module Memory Check Sum Error) or U0100 (Lost Communication With ECM)
A Straightforward Guide to Installation
Installing your 2006 Pursuit Engine Control Module is a manageable job for a confident DIYer. Always follow proper safety procedures.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the ECM: On the 2006 Pontiac Pursuit, the ECM is typically found in the left-hand (driver’s side) front of the engine compartment.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Do not force them.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware as you may need it for the new installation.
- Install the New Module: Mount the new, pre-programmed ECM in place and securely tighten the bolts. Reconnect the electrical harnesses, ensuring they click firmly into place.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Perform Security Relearn: Your vehicle may require a security relearn procedure to recognize the new ECM. This can typically be done without special tools by cycling the key in the ignition. A common method is: Turn the key to ‘ON’ for 10 minutes, ‘OFF’ for 10 seconds, and repeat two more times. Then, try to start the vehicle.
Verified Vehicle Compatibility
This ECM is a direct replacement for service number 12590032 and is also interchangeable with part numbers 12602044, 12603530, 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
Frequently Asked Questions
Frequently Asked Questions
Do I need to program this 2006 Pursuit Engine Control Module?
No. This module comes fully programmed to your vehicle’s VIN before we ship it. It is ready to be installed right out of the box, saving you a trip to the dealership.
Where do I find my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a placard on the driver’s side of the dashboard visible through the windshield.
What if my original part number doesn’t match 12590032?
This module is a direct replacement for several service numbers. Check the compatibility list above. As long as your vehicle and original part number are listed, this module will work perfectly.
Is a security relearn procedure difficult?
Not at all. For most GM vehicles, it’s a simple process that involves cycling the key in the ignition as described in our installation guide. It requires no special tools and takes about 30 minutes.
Will this fix my car’s specific problem?
This ECM will fix problems directly caused by a faulty module. While the symptoms we listed are very common for ECM failure, we always recommend having a qualified mechanic perform a full diagnosis to confirm the ECM is the point of failure before ordering.