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OEM Engine Control Module (ECM) for 2009, 2010, 2011, 2012 Buick, Cadillac, Chevrolet, GMC, Hummer, & Saab
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OEM Engine Control Module (ECM) for 2009-2012 Buick, Cadillac, Chevrolet, GMC, Hummer, & Saab

$ 79 .95
30-DayReturns
6-monthWarranty
100%Money-Back

Condition: Excellent (A) — like new, minimal to no wear

Professionally inspected and tested.

Odometer 126,500 miles at removal

Product Notes Read before buying

This is a used engine control module (ECM). This is a programmable control module. The module must be programmed at a dealership to ensure driveability and emission standards.

This Engine Control Module (ECM) fits a wide range of GM vehicles, but is specific to certain engine sizes. This module MUST be reprogrammed by a qualified mechanic or dealership after installation to ensure proper vehicle operation.

⚠️ ELECTRONIC MODULE NOTICE

This module may require programming to your vehicle by a dealer or qualified technician with professional diagnostic equipment.

  • Ships in a sealed inspection bag for visual inspection
  • Returns not accepted if inspection bag has been opened
  • "Needs programming" is not grounds for return
  • If told the module "won't program," contact us before returning
  • Defective units replaced ONLY ONCE, under warranty
See All Other Electronic Control Modules

Why Buy Used OEM Parts?

Checked & Tested

We check and test every used part before we sell it. It may show some wear, but it works and is ready to install.

Original Equipment

This is the same part your vehicle came with from the factory. It fits and works just like the original — because it is one.

Works Like New

A few marks on the outside don't change what's inside. The part works the way it should.

Big Savings

Pay 50–80% less than buying new. Same factory part, much lower price.

Wrenchy the Robot
Not sure? Ask Wrenchy — Your Parts Assistant.

Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.

Vehicle Fitment Guide

This part fits the following vehicles:

Buick 1 model(tapclick to expand)(tapclick to hide)
Lucerne 2009-2011 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
CX Sedan 2009 - 2011 V6 3.9L FLEX -
CX Sedan 2009 - 2010 V6 3.9L -
CXL Sedan 2009 - 2010 V6 3.9L -
CXL Sedan 2009 - 2011 V6 3.9L FLEX -
Super Sedan 2009 - 2011 V8 4.6L -
CXL Special Edition Sedan 2010 V6 3.9L FLEX -
CXL Special Edition Sedan 2010 V6 3.9L -
Applies to every configuration above: FWD | Automatic
Cadillac 5 models(tapclick to expand)(tapclick to hide)
CTS 2009 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Sedan 2009 V6 3.6L AWD/RWD | Automatic & Manual
Luxury Sedan 2009 V6 3.6L RWD | Automatic
Premium Sedan 2009 V6 3.6L RWD | Automatic
V Sedan 2009 V8 6.2L Supercharged RWD | Automatic & Manual
DTS 2009-2011 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Hearse 2009 - 2011 V8 4.6L -
Base Limousine 2009 - 2011 V8 4.6L -
Base Sedan 2009 - 2011 V8 4.6L -
Luxury Sedan 2009 - 2011 V8 4.6L -
Platinum Sedan 2009 - 2011 V8 4.6L -
Livery Hearse 2010 - 2011 V8 4.6L -
Livery Limousine 2010 - 2011 V8 4.6L -
Livery Sedan 2010 - 2011 V8 4.6L -
Premium Sedan 2010 - 2011 V8 4.6L -
Applies to every configuration above: FWD | Automatic
SRX 2009 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base SUV 2009 V6 3.6L -
Base SUV 2009 V8 4.6L -
Applies to every configuration above: AWD/RWD | Automatic
STS 2009-2010 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Sedan 2009 - 2010 V6 3.6L AWD/RWD | Automatic
Base Sedan 2009 - 2010 V8 4.6L AWD/RWD | Automatic
Platinum Sedan 2009 V6 3.6L AWD/RWD | Automatic
Platinum Sedan 2009 V8 4.6L AWD/RWD | Automatic
V Sedan 2009 V8 4.4L Supercharged RWD | Automatic
XLR 2009 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Platinum Convertible 2009 V8 4.6L -
V Convertible 2009 V8 4.4L Supercharged -
Applies to every configuration above: RWD | Automatic
Chevrolet 3 models(tapclick to expand)(tapclick to hide)
Colorado 2009-2012 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Crew Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic
LT Crew Cab Pickup 2009 - 2012 L4 2.9L RWD/4WD | Automatic & Manual
LT Extended Cab Pickup 2009 - 2012 L4 2.9L RWD/4WD | Automatic & Manual
LT Standard Cab Pickup 2009 - 2012 L4 2.9L RWD/4WD | Automatic & Manual
LT Crew Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
LT Extended Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
LT Standard Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
LT Crew Cab Pickup 2009 - 2012 V8 5.3L RWD/4WD | Automatic & Manual
LT Extended Cab Pickup 2009 - 2012 V8 5.3L RWD/4WD | Automatic & Manual
LT Standard Cab Pickup 2009 - 2012 V8 5.3L RWD/4WD | Automatic & Manual
WT Extended Cab Pickup 2009 - 2012 L4 2.9L RWD/4WD | Automatic & Manual
WT Standard Cab Pickup 2009 - 2012 L4 2.9L RWD/4WD | Automatic & Manual
WT Extended Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
WT Standard Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
Base Crew Cab Pickup 2010 - 2012 L4 2.9L RWD/4WD | Automatic
WT Cab & Chassis 2012 L4 2.9L RWD/4WD | Automatic & Manual
WT Cab & Chassis 2012 L5 3.7L RWD/4WD | Automatic & Manual
2011
Corvette 2009 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Convertible 2009 V8 6.2L RWD | Automatic & Manual
Base Hatchback 2009 V8 6.2L RWD | Automatic & Manual
Z06 Hatchback 2009 V8 7.0L RWD | Manual
ZR1 Hatchback 2009 V8 6.2L Supercharged RWD | Manual
Trailblazer 2009 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
LT SUV 2009 L6 4.2L RWD/4WD | Automatic
SS SUV 2009 V8 6.0L AWD/RWD | Automatic
GMC 2 models(tapclick to expand)(tapclick to hide)
Canyon 2009-2012 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Crew Cab Pickup 2009 - 2012 L5 3.7L 4WD | Automatic
SLE Crew Cab Pickup 2009 - 2012 L4 2.9L RWD/4WD | Automatic & Manual
SLE Extended Cab Pickup 2009 - 2012 L4 2.9L RWD/4WD | Automatic & Manual
SLE Standard Cab Pickup 2009 - 2012 L4 2.9L RWD/4WD | Automatic & Manual
SLE Crew Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
SLE Extended Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
SLE Standard Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
SLE Crew Cab Pickup 2009 - 2012 V8 5.3L RWD/4WD | Automatic & Manual
SLE Extended Cab Pickup 2009 - 2012 V8 5.3L RWD/4WD | Automatic & Manual
SLE Standard Cab Pickup 2009 - 2012 V8 5.3L RWD/4WD | Automatic & Manual
SLT Crew Cab Pickup 2009, 2012 L4 2.9L RWD/4WD | Automatic & Manual
SLT Extended Cab Pickup 2009, 2012 L4 2.9L RWD/4WD | Automatic & Manual
SLT Crew Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
SLT Extended Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
SLT Crew Cab Pickup 2009 - 2012 V8 5.3L RWD/4WD | Automatic & Manual
SLT Extended Cab Pickup 2009 - 2012 V8 5.3L RWD/4WD | Automatic & Manual
WT Extended Cab Pickup 2009 - 2012 L4 2.9L RWD/4WD | Automatic & Manual
WT Standard Cab Pickup 2009 - 2012 L4 2.9L RWD/4WD | Automatic & Manual
WT Extended Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
WT Standard Cab Pickup 2009 - 2012 L5 3.7L RWD/4WD | Automatic & Manual
2010 - 2011
Envoy 2009 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Denali SUV 2009 V8 5.3L -
SLE SUV 2009 L6 4.2L -
SLT SUV 2009 L6 4.2L -
Applies to every configuration above: RWD/4WD | Automatic
Hummer 1 model(tapclick to expand)(tapclick to hide)
H3 2009-2010 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Adventure SUV 2009 L5 3.7L 4WD | Automatic & Manual
Adventure SUV 2009 - 2010 L5 3.7L AWD | Automatic
Alpha SUV 2009 V8 5.3L AWD | Automatic
Alpha SUV 2009 - 2010 V8 5.3L 4WD | Automatic
Base SUV 2009 - 2010 L5 3.7L 4WD | Automatic & Manual
Championship Series SUV 2009 V8 5.3L 4WD | Automatic
Luxury SUV 2009 - 2010 L5 3.7L AWD | Automatic
Luxury SUV 2009 L5 3.7L 4WD | Automatic & Manual
X SUV 2009 L5 3.7L 4WD | Automatic & Manual
Alpha SUV 2010 V8 5.3L FLEX AWD/4WD | Automatic
Saab 1 model(tapclick to expand)(tapclick to hide)
9-7x 2009 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
4.2i SUV 2009 L6 4.2L -
5.3i SUV 2009 V8 5.3L -
Aero SUV 2009 V8 6.0L -
Applies to every configuration above: AWD | Automatic
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

Policies, in plain English.

Shipping & Handling

  • Standard shipping: 3-7 business days via UPS Ground
  • Parts are carefully packaged to prevent damage during transit

6-Month Warranty

All used parts include a 6-month warranty from the date of purchase.

  • If your part fails within 6 months, we will send a replacement
  • Refunds are only issued if we cannot provide a suitable replacement
  • Warranty covers defects — not installation errors, misuse, or damage after installation

Note: Warranty is for replacement, not refund. A part failing on day 80? We'll replace it. But the return window for refunds is 30 days.

Returns (30 Days)

We accept returns within 30 days of delivery for this part.

  • Defective parts: We will replace the part or issue a refund at our discretion
  • Electronic parts: Must be returned with the sealed inspection bag unopened. The clear bag allows full visual inspection before opening. Once opened, electronic parts can only be exchanged for a replacement if defective — no refunds
  • Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
  • Return shipping: We cover return shipping as part of our 100% money-back guarantee
  • Parts must be returned in original packaging and unmodified condition
  • Poorly packaged returns that arrive damaged will not be credited

Damaged in Shipping?

If your part arrives damaged:

  • Stop immediately — do not install the part
  • Keep all original packaging and boxes
  • Take clear photos of the damage and packaging
  • Contact us within 48 hours of delivery

We will handle the carrier claim. You are not responsible for shipping damage — we just need your help documenting it.

Order Cancellation

Orders can be cancelled before shipment for a full refund. Once shipped, cancellations follow our return policy.

Expert Guides

2009-2012 GM ECM Failure: Programming, Symptoms, and Replacement for Colorado, Canyon, CTS & More

Stalling, no-start conditions, or random warning lights in your GM vehicle could point to a failing Engine Control Module, but replacing it requires a critical programming step to work.

 Read Full Guide →

Related Trouble Codes (OBD-II)

40 matching guides

If your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.

P0601
Internal ECM Failure Causes and Fixes
2006-2009 Chevrolet TrailBlazer SS
 P0601
Internal Module Memory Error Causes and Fixes
2007-2014 Cadillac CTS
 P0601
ECM Memory Error Causes and Fixes
2005-2013 Chevrolet Corvette
 P0601
Internal Module Memory Error Causes and Fixes
2006-2010 Hummer H3
 P0601
Internal Module Memory Error Causes and Fixes
2007-2014 Chevrolet CORVETTE
 P0601
Internal Module Failure Causes and Fixes
2007-2011 Cadillac STS
 P0601
Internal Control Module Memory Error Fixes
2007-2011 Buick LUCERNE
 P0601
Internal Control Module Failure Causes and Fixes
2007-2011 Cadillac DTS
 P0601
Internal Module Failure Causes and Fixes
2007-2009 Cadillac XLR
 P0602
Control Module Programming Error Causes and Fixes
2007-2014 Cadillac CTS
 P0602
Control Module Programming Error Causes and Fixes
2006-2010 Hummer H3
 P0602
Control Module Programming Error Causes and Fixes
2005-2009 Saab 9-7X
↑ A single part can trigger multiple related trouble codes. Each guide is vehicle- and code-specific.

Miscellaneous Information

OEM Part Numbers:
GM: 12628911, 12628993, 12639300, 12678512
GMC: 12625453, 12630464, 12636015, 12636659

Fits Years: 2009 2010 2011 2012

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100%
Money-Back Guarantee

Shop With Total Confidence

Not happy with what arrived? 30-day returns, no-questions-asked refund. We make it right.

19
Years of Excellence

Trusted Since 2007

Nearly two decades of shipping parts to professionals & enthusiasts.

6MO
Warranty

Backed For The Long Haul

This part ships with a 6-month warranty. If it doesn't fit or stops working, we replace or refund — no hassle.

What buyers are saying.

★★★★★ 4.9 1,451 verified reviews

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