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CHEVROLET  |  SKU: 0261209023

0261209023 | Genuine GM® Engine Control Module

$38900
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Description:
Engine Control Module 0261209023 (also called ECU) — it’s the computer that manages various engine operations (fuel injection, ignition timing, emissions control, etc.). Engine Control Module 0261209023 fits 2004–2008 Cadillac CTS, SRX, Buick LaCrosse, Rendezvous

Part Number: 0261209023, 0 261 209 023
Condition: New
Manufacture/Brand: GM

Fits 0261209023 For 

Year Make Model Body & Trim Engine & Transmission
2008 Buick LaCrosse CXS 3.6L V6 - Gas
2007 Buick LaCrosse CXS 3.6L V6 - Gas
2007 Cadillac CTS Base 2.8L V6 - Gas, 3.6L V6 - Gas
2006 Buick LaCrosse CXS 3.6L V6 - Gas
2006 Buick Rendezvous CX, CXL 3.6L V6 - Gas
2006 Cadillac CTS Base 2.8L V6 - Gas, 3.6L V6 - Gas
2006 Cadillac SRX Base 3.6L V6 - Gas
2005 Buick LaCrosse CXS 3.6L V6 - Gas
2005 Buick Rendezvous CXL Plus, Ultra 3.6L V6 - Gas
2005 Cadillac CTS Base 2.8L V6 - Gas, 3.6L V6 - Gas
2005 Cadillac SRX Base 3.6L V6 - Gas
2004 Buick Rendezvous CXL, Ultra 3.6L V6 - Gas
2004 Cadillac CTS Base 3.6L V6 - Gas
2004 Cadillac SRX Base 3.6L V6 - Gas


Purpose of using 0261209023:

Function What It Does
Fuel Management Controls fuel injection timing and amount
Ignition Timing Optimizes spark timing for power and efficiency
Idle Control Maintains stable engine idle under all conditions
Emissions Control Works with O2 sensors, EGR, etc., to reduce emissions
Turbo / Boost Control (diesel or turbo engines) Manages boost pressure safely
Diagnostic Monitoring Detects engine issues and stores trouble codes (DTCs)
Communication Talks to other systems (transmission, ABS, ESC) via CAN bus


Signs of Bad Engine Control Module 0261209023:

  1. Check Engine Light (CEL)

    • Comes on unexpectedly

    • May store unrelated or confusing error codes

  2. Engine Misfires or Poor Performance

    • Hesitation, stalling, rough idle, or surging

    • Weak acceleration or random power loss

  3. Hard Starting or No Start

    • The engine cranks but doesn’t start

    • Or starts and immediately dies

    • No injector pulse or ignition spark

  4. Bad Fuel Economy

    • ECM may send incorrect fuel/air mix

    • Over-fueling or under-fueling conditions

  5. Transmission Shifting Problems (if TCM is integrated)

    • Erratic or harsh shifts

    • Stuck in a single gear

  6. Failed Emissions Test

    • If ECM can't regulate emissions, O2 sensors, or EGR

  7. Electrical Gremlins

    • Random warning lights

    • Intermittent loss of gauges or dashboard functions

  8. Unable to Communicate with Scan Tool

    • If ECM is dead, it won’t respond via OBD-II/CAN



About the Manufacturer – GM:

General Motors (GM) is one of the largest and most iconic automotive manufacturers in the world. Founded in 1908 and headquartered in Detroit, Michigan, GM designs, builds, and sells vehicles under several well-known brands, including Chevrolet, GMC, Cadillac, and Buick.
GM is known for its long history of innovation in the automotive industry, from developing early electric vehicles to advancing autonomous driving and connected car technologies. The company has a strong global presence and is committed to a future of zero crashes, zero emissions, and zero congestion, with significant investments in electric vehicles (EVs) and sustainable mobility.

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