K 2500 Yukon 4WD V8-6.0L VIN U (2000)
Powertrain Control Module: Service and Repair
PCM Programming
1. Setup - Ensure that the following conditions have been met:
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The battery is fully charged.
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The ignition is ON.
2. Program the PCM using the latest software matching the vehicle. Refer to the Techline terminal/equipment users instructions.
3. If the PCM fails to program, proceed as follows:
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Ensure that all PCM connections are OK. Inspect the Techline terminal or equipment for the latest software version.
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Attempt to program the PCM. If the PCM still cannot be programmed properly, replace the PCM. The replacement PCM must be
programmed.
4. Perform the PCM Password Learn procedure. Refer to DTC P1631 Theft Deterrent Start Enable Signal Not Correct.
5. Perform the Idle Learn Procedure. Refer to Idle Learn Procedure.
6. Perform the CKP System Variation Learn Procedure. Refer to CKP System Variation Learn Procedure.
7. Reset the engine oil life monitor. Refer to GM Oil Life System - Resetting.
8. Perform the Functional Check.
FUNCTIONAL CHECK
1. Clear the Diagnostic Trouble Codes (DTCs).
2. Perform the powertrain On Board Diagnostic (OBD) System Check.
3. Start the engine and idle the engine for 1 minute.
4. Use the scan tool in order to inspect for DTCs.
