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OEM Programmable Engine Control Module (ECM) for 2013, 2014, 2015, 2016 Buick, Cadillac, Chevrolet, & GMC
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OEM Programmable Engine Control Module (ECM) for 2013-2016 Buick, Cadillac, Chevrolet, & GMC

Out of Stock
$ 85 .95

Product Notes

This is a used engine control module for vehicles with a 3.6L engine. The module must be programmed at a dealership to ensure driveability and emission standards.

This is a used engine control module that requires professional installation and programming (flashing) to your vehicle's specific VIN. Fitment is highly specific. There is conflicting information regarding the exact engine this module is for. Please verify that your original module's part number is an exact match to 12656453 before purchasing.

Original Part #(s): 12633555, 12653998, 12654752, 12655476, 12656453, 12657781, 12664220
Condition: Excellent (A)
Like new, minimal to no wear
62,900 miles
Odometer reading when part was removed

1 Other Matching Unit Available

Same part, different stock options.

See All Other Engine Control Module (ECM)s

Why Buy Used OEM Parts?

  • ✓ Quality-Verified: Every used OEM part we sell has been professionally inspected and tested. While it may show some cosmetic wear, it's fully functional and ready to install.
  • ✓ Original Equipment: This is a genuine OEM part — the exact part that came with your vehicle from the factory. Perfect fitment and performance.
  • ✓ Works Like New: Despite visual wear, internal components and functionality are intact. Same reliability you'd expect from OEM quality.
  • ✓ Significant Savings: Save 50–80% vs. new. Factory quality at a fraction of the cost — the smart choice for budget-conscious owners.
30-dayreturns 6-monthwarranty 100%money-back
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Vehicle Fitment Guide

This part fits the following vehicles:

Buick 4 models(tapclick to expand)(tapclick to hide)
Enclave 2013-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base SUV 2013 V6 3.6L AWD/FWD | Automatic
CXL SUV 2013 V6 3.6L AWD | Automatic
Convenience SUV 2014 V6 3.6L AWD | Automatic
Convenience SUV 2014 - 2016 V6 3.6L FWD | Automatic
Leather SUV 2014 - 2016 V6 3.6L AWD/FWD | Automatic
Premium SUV 2014 - 2016 V6 3.6L AWD/FWD | Automatic
2015
LaCrosse 2013-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Sedan 2013 - 2016 L4 2.4L MILD HYBRID EV-GAS (MHEV) FWD | Automatic
Base Sedan 2013 L4 2.4L MILD HYBRID EV-GAS (MHEV) AWD | Automatic
Base Sedan 2013 - 2016 V6 3.6L FLEX FWD | Automatic
Base Sedan 2013 V6 3.6L FLEX AWD | Automatic
CXS Sedan 2013 V6 3.6L FLEX FWD | Automatic
Leather Sedan 2013 - 2016 L4 2.4L MILD HYBRID EV-GAS (MHEV) AWD/FWD | Automatic
Leather Sedan 2013 - 2016 V6 3.6L FLEX AWD/FWD | Automatic
Premium Sedan 2013 - 2016 V6 3.6L FLEX AWD/FWD | Automatic
Touring Sedan 2013 V6 3.6L FLEX AWD/FWD | Automatic
Premium Sedan 2014 L4 2.4L MILD HYBRID EV-GAS (MHEV) AWD/FWD | Automatic
Base Sedan 2016 V6 3.6L FWD | Automatic
Leather Sedan 2016 V6 3.6L AWD/FWD | Automatic
Premium Sedan 2016 V6 3.6L AWD/FWD | Automatic
Sport Touring Sedan 2016 V6 3.6L FWD | Automatic
Sport Touring Sedan 2016 V6 3.6L FLEX FWD | Automatic
2015
Regal 2013-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Sedan 2013 - 2014 L4 2.4L MILD HYBRID EV-GAS (MHEV) FWD | Automatic
GS Sedan 2013 L4 2.0L FLEX Turbo FWD | Automatic & Manual
Premium Sedan 2013 - 2016 L4 2.0L Turbo FWD | Automatic
Premium Sedan 2013 L4 2.0L FLEX Turbo FWD | Automatic & Manual
Premium Sedan 2013 - 2016 L4 2.4L MILD HYBRID EV-GAS (MHEV) FWD | Automatic
Premium Sedan 2013 L4 2.4L MILD HYBRID EV-GAS (MHEV) FWD | Manual
Base Sedan 2014 - 2016 L4 2.0L Turbo AWD/FWD | Automatic
Base Sedan 2014 L4 2.4L MILD HYBRID EV-GAS (MHEV) AWD | Automatic
GS Sedan 2014 - 2016 L4 2.0L Turbo AWD/FWD | Automatic & Manual
Premium Sedan 2014 - 2016 L4 2.0L Turbo AWD | Automatic
Premium Sedan 2014 - 2016 L4 2.4L MILD HYBRID EV-GAS (MHEV) AWD | Automatic
Base Sedan 2015 - 2016 L4 2.4L FLEX AWD/FWD | Automatic
Base Sedan 2016 L4 2.4L AWD/FWD | Automatic
Sport Touring Sedan 2016 L4 2.0L Turbo FWD | Automatic
Verano 2013-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Sedan 2013 - 2016 L4 2.4L FLEX FWD | Automatic
Convenience Sedan 2013 - 2016 L4 2.4L FLEX FWD | Automatic
Leather Sedan 2013 - 2016 L4 2.4L FLEX FWD | Automatic
Premium Sedan 2013 - 2016 L4 2.0L Turbo FWD | Automatic & Manual
Turbo Sedan 2013 L4 2.0L Turbo FWD | Automatic & Manual
Premium Sedan 2014 L4 2.4L FWD | Automatic
Tela Sedan 2014 L4 2.4L FLEX FWD | Automatic
CX Sedan 2015 - 2016 L4 2.4L FLEX FWD | Automatic
CX Sedan 2015 - 2016 L4 2.4L FWD | Automatic
CXL Sedan 2015 - 2016 L4 2.0L Turbo FWD | Automatic
Base Sedan 2016 L4 2.4L FWD | Automatic
Convenience Sedan 2016 L4 2.4L FWD | Automatic
Leather Sedan 2016 L4 2.4L FWD | Automatic
Sport Touring Sedan 2016 L4 2.4L FLEX FWD | Automatic
Sport Touring Sedan 2016 L4 2.4L FWD | Automatic
Cadillac 3 models(tapclick to expand)(tapclick to hide)
CTS 2014-2015 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Coupe Coupe 2014 V6 3.6L RWD | Automatic | engine_size: include 3.6L; drive_type: include RWD; fuel_type: include GAS
Premium Coupe 2014 V6 3.6L RWD | Automatic | engine_size: include 3.6L; drive_type: include RWD; fuel_type: include GAS
Premium Sedan 2014 - 2015 V6 3.6L RWD | Automatic | engine_size: include 3.6L; drive_type: include RWD; fuel_type: include GAS
Vsport Sedan 2014 - 2015 V6 3.6L Turbo RWD | Automatic | engine_size: include 3.6L; drive_type: include RWD; fuel_type: include GAS
Vsport Premium Sedan 2014 - 2015 V6 3.6L Turbo RWD | Automatic | engine_size: include 3.6L; drive_type: include RWD; fuel_type: include GAS
SRX 2013-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base SUV 2013 - 2016 V6 3.6L FLEX FWD | Automatic
Luxury SUV 2013 - 2016 V6 3.6L FLEX AWD/FWD | Automatic
Performance SUV 2013 - 2016 V6 3.6L FLEX AWD/FWD | Automatic
Premium SUV 2013 - 2016 V6 3.6L FLEX AWD/FWD | Automatic
Luxury SUV 2014 - 2016 V6 3.6L FWD | Automatic
Premium SUV 2014 - 2016 V6 3.6L AWD/FWD | Automatic
Base SUV 2016 V6 3.6L FWD | Automatic
Luxury SUV 2016 V6 3.6L AWD | Automatic
Performance SUV 2016 V6 3.6L AWD/FWD | Automatic
2015
XTS 2013-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Sedan 2013 - 2016 V6 3.6L FWD | Automatic
Livery Hearse 2013 - 2016 V6 3.6L FWD | Automatic
Livery Limousine 2013 - 2016 V6 3.6L FWD | Automatic
Livery Sedan 2013 - 2014 V6 3.6L FWD | Automatic
Luxury Sedan 2013 - 2016 V6 3.6L AWD/FWD | Automatic
Platinum Sedan 2013 - 2016 V6 3.6L AWD/FWD | Automatic
Premium Sedan 2013 - 2016 V6 3.6L AWD/FWD | Automatic
Vsport Platinum Sedan 2014 - 2016 V6 3.6L Turbo AWD | Automatic
Vsport Premium Sedan 2014 - 2016 V6 3.6L Turbo AWD | Automatic
2015
Chevrolet 8 models(tapclick to expand)(tapclick to hide)
Camaro 2013-2015 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
LS Coupe 2013 - 2015 V6 3.6L RWD | Automatic & Manual
LT Convertible 2013 - 2015 V6 3.6L RWD | Automatic & Manual
LT Coupe 2013 - 2015 V6 3.6L RWD | Automatic & Manual
SS Convertible 2013 - 2015 V8 6.2L RWD | Automatic & Manual
SS Coupe 2013 - 2015 V8 6.2L RWD | Automatic & Manual
ZL1 Convertible 2013 - 2015 V8 6.2L Supercharged RWD | Automatic & Manual
ZL1 Coupe 2013 - 2015 V8 6.2L Supercharged RWD | Automatic & Manual
Z/28 Coupe 2014 - 2015 V8 7.0L RWD | Manual
Caprice 2014-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
PPV Sedan 2014 - 2016 V6 3.6L FLEX RWD | Automatic
PPV Sedan 2014 - 2016 V8 6.0L FLEX RWD | Automatic
2015
Captiva Sport 2013-2015 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
LS SUV 2013 - 2015 L4 2.4L FLEX FWD | Automatic
LT SUV 2013 L4 2.4L FLEX AWD | Automatic
LT SUV 2013 - 2015 L4 2.4L FLEX FWD | Automatic
LT SUV 2013 V6 3.0L FLEX AWD | Automatic
LT SUV 2013, 2015 V6 3.0L FLEX FWD | Automatic
LTZ SUV 2013 - 2015 L4 2.4L FLEX FWD | Automatic
LT SUV 2014 L6 3.0L FWD | Automatic
LT SUV 2014 - 2015 V6 3.0L FWD | Automatic
Equinox 2013-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
LS SUV 2013 - 2016 L4 2.4L FLEX AWD/FWD | Automatic
LS SUV 2013 - 2016 L4 2.4L AWD/FWD | Automatic
LT SUV 2013 - 2016 L4 2.4L AWD/FWD | Automatic
LT SUV 2013 - 2016 L4 2.4L FLEX AWD/FWD | Automatic
LT SUV 2013 - 2016 V6 3.6L AWD/FWD | Automatic
LT SUV 2013 - 2016 V6 3.6L FLEX AWD/FWD | Automatic
LTZ SUV 2013 - 2016 L4 2.4L FLEX AWD/FWD | Automatic
LTZ SUV 2013 - 2016 L4 2.4L AWD/FWD | Automatic
LTZ SUV 2013 - 2016 V6 3.6L FLEX AWD/FWD | Automatic
LTZ SUV 2013 - 2016 V6 3.6L AWD/FWD | Automatic
L SUV 2015 - 2016 L4 2.4L FWD | Automatic
L SUV 2015 - 2016 L4 2.4L FLEX FWD | Automatic
2014
Impala 2014-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Eco Sedan 2014 L4 2.4L MILD HYBRID EV-GAS (MHEV) FWD | Automatic
LS Sedan 2014 - 2016 L4 2.5L FWD | Automatic
LT Sedan 2014 - 2016 L4 2.5L FWD | Automatic
LT Sedan 2014 - 2016 V6 3.6L FLEX FWD | Automatic
LT Sedan 2014, 2016 V6 3.6L FWD | Automatic
LTZ Sedan 2014 - 2016 L4 2.5L FWD | Automatic
LTZ Sedan 2014 - 2016 V6 3.6L FLEX FWD | Automatic
LTZ Sedan 2014, 2016 V6 3.6L FWD | Automatic
LS Sedan 2015 - 2016 V6 3.6L BI-FUEL FWD | Automatic
LT Sedan 2015 - 2016 V6 3.6L BI-FUEL FWD | Automatic
LS Sedan 2016 L4 2.5L FLEX FWD | Automatic
LT Sedan 2016 L4 2.5L FLEX FWD | Automatic
LTZ Sedan 2016 L4 2.5L FLEX FWD | Automatic
Malibu 2013-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Eco Sedan 2013 - 2014 L4 2.4L MILD HYBRID EV-GAS (MHEV) FWD | Automatic
LS Sedan 2013 - 2015 L4 2.5L FWD | Automatic
LT Sedan 2013 - 2016 L4 2.0L Turbo FWD | Automatic
LT Sedan 2013 - 2015 L4 2.5L FWD | Automatic
LTZ Sedan 2013 - 2015 L4 2.0L Turbo FWD | Automatic
LTZ Sedan 2013 - 2015 L4 2.5L FWD | Automatic
Hybrid Sedan 2016 L4 1.8L FULL HYBRID EV-GAS (FHEV) FWD | Automatic
L Sedan 2016 L4 1.5L Turbo FWD | Automatic
LS Sedan 2016 L4 1.5L Turbo FWD | Automatic
LT Sedan 2016 L4 1.5L Turbo FWD | Automatic
Premier Sedan 2016 L4 2.0L Turbo FWD | Automatic
Orlando 2014 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
LS SUV 2014 L4 2.4L FLEX FWD | Automatic & Manual
LT SUV 2014 L4 2.4L FLEX FWD | Automatic & Manual
LTZ SUV 2014 L4 2.4L FLEX FWD | Automatic
Traverse 2013-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
LS SUV 2013 - 2016 V6 3.6L AWD/FWD | Automatic
LT SUV 2013 - 2016 V6 3.6L AWD/FWD | Automatic
LTZ SUV 2013 - 2016 V6 3.6L AWD/FWD | Automatic
Base SUV 2015 - 2016 V6 3.6L FWD | Automatic
2014
GMC 2 models(tapclick to expand)(tapclick to hide)
Acadia 2013-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Denali SUV 2013 - 2016 V6 3.6L AWD/FWD | Automatic
SL SUV 2013, 2016 V6 3.6L FWD | Automatic
SL SUV 2013 V6 3.6L AWD | Automatic
SLE SUV 2013 - 2016 V6 3.6L AWD/FWD | Automatic
SLT SUV 2013 - 2016 V6 3.6L AWD/FWD | Automatic
SLT1 SUV 2015 - 2016 V6 3.6L FWD | Automatic
SLT2 SUV 2015 - 2016 V6 3.6L AWD | Automatic
2014
Terrain 2013-2016 (tapclick to expand)(tapclick to hide)
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SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Denali SUV 2013 - 2016 L4 2.4L AWD/FWD | Automatic
Denali SUV 2013 - 2016 L4 2.4L FLEX AWD/FWD | Automatic
Denali SUV 2013 - 2016 V6 3.6L AWD/FWD | Automatic
Denali SUV 2013 - 2015 V6 3.6L FLEX AWD/FWD | Automatic
SLE SUV 2013 - 2016 L4 2.4L AWD/FWD | Automatic
SLE SUV 2013 - 2016 L4 2.4L FLEX AWD/FWD | Automatic
SLE SUV 2013 - 2015 V6 3.6L FLEX AWD/FWD | Automatic
SLE SUV 2013 - 2016 V6 3.6L AWD/FWD | Automatic
SLT SUV 2013 - 2016 L4 2.4L AWD/FWD | Automatic
SLT SUV 2013 - 2016 L4 2.4L FLEX AWD/FWD | Automatic
SLT SUV 2013 - 2016 V6 3.6L AWD/FWD | Automatic
SLT SUV 2013 - 2015 V6 3.6L FLEX AWD/FWD | Automatic
SL SUV 2015 - 2016 L4 2.4L FWD | Automatic
SL SUV 2015 - 2016 L4 2.4L FLEX FWD | Automatic
2014
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

Shipping & Handling

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

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

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.

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.

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⚠️ Related Trouble Codes (OBD-II)

50 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.

P0201
Injector Circuit Fixes & Causes
2009-2013 Chevrolet MALIBU
P0202
Injector Circuit Malfunction Causes & Fixes
2009-2013 Chevrolet MALIBU
P0203
Injector Circuit Malfunction Causes and Fixes
2009-2013 Chevrolet MALIBU
P0268
The 'Ghost' Code for a Non-Existent Cylinder
2009-2014 Gmc ACADIA
P0308
Decoding a Misfire on a Non-Existent Cylinder
2010-2017 Gmc TERRAIN
P0308
An Impossible Misfire Code Explained
2011-2018 Buick REGAL
P0308
Why Your V6 is Showing a V8 Misfire Code
2013-2019 Cadillac XTS
P0601
Internal Control Module Failure Causes and Fixes
2007-2014 Gmc ACADIA
P0601
Internal Module Memory Error Causes and Fixes
2007-2014 Cadillac CTS
P0601
Internal Memory Error Causes & Fixes
2008-2015 Buick ENCLAVE
P0601
Internal Control Module Memory Error Causes and Fixes
2010-2017 Gmc TERRAIN
P0601
Internal Control Module Memory Fault Guide
2009-2015 Chevrolet TRAVERSE
↑ A single part can trigger multiple related trouble codes. Each guide is vehicle- and code-specific.

Miscellaneous Information

OEM Part Numbers:
Other: 12633555, 12653998, 12654752, 12655476, 12656453, 12657781, 12664220

Fits Years: 2013 2014 2015 2016

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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.

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★★★★★ 4.9 1,451 verified reviews

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