Envoy 4WD V8-5.3L VIN M (2005)
Engine Control Module: Service and Repair
Engine Control Module Programming and Setup
ENGINE CONTROL MODULE PROGRAMMING AND SETUP
The following service procedures require either a programming or a setup event be performed for a complete repair.
ECM Replacement
If the engine control module (ECM) is replaced, the following procedures must be performed:
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The ECM Reprogramming-Refer to Service Programming System (SPS).
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The CKP Variation Learn-Refer to CKP System Variation Learn Procedure in Computers and Control Systems - 5.3L.
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The Theft Deterrent Programming-Refer to Programming Theft Deterrent System Components in Theft Deterrent.
ECM Reprogramming
If the ECM needs to be reprogrammed, refer to Service Programming System (SPS) .
Setup for Component Replacement
The replacement of some components will require a setup procedure for complete repair.
If any of the following components are replaced, a CKP Variation Learn Procedure must be performed. Refer to CKP System Variation Learn
Procedure in Computers and Control Systems - 5.3L.
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Engine replacement
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Any engine repair that disturbs the crankshaft position (CKP) sensor or its relationship with the crankshaft reluctor wheel
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CKP sensor
