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TRAC OFF Lamp On amd DTC U1304 after PCM Replacement - keywords DTC EBTCM IPC message TCS

Subject:TRAC OFF Lamp On and DTC U1304 after PCM Replacement

Models:2003 Pontiac Grand Prix



The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

TRAC OFF lamp on after PCM replacement for an unrelated concern. This condition is usually accompanied by DTC U1304 set in the EBCM. Many times multiple PCMs with same part number will be replaced with the same results.

Recommendation/Instructions:

TRAC OFF lamp on after PCM replacement for an unrelated concern. This condition is usually accompanied by DTC U1304 set in the EBCM. Many times multiple PCMs with same part number will be replaced with the same results.

3.1 V6 LG8 (VIN J)

Part Number

Description

12209614

1st design

12583827

2nd design

3.8 V6 L36 (VIN K)

Part Number

12583826

Note: There have been a few cases where part number 12209624 was required for an early built 2003 Grand Prix with 3.8 V6 L36 (VIN K).

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.