LA1 L36 Engine Overheat and, or Cooling Fans Inoperative Intermittently - kw cluster coolant gauge hot temperature IPC

The following diagnosis might be helpful if the vehicle exhibits the symptom described in the PI.

Engine overheat and, or cooling fans inoperative intermittently.

If, after following published diagnostics in SI, the condition still exists, the following procedure may lead to an effective resolution.

1. Operate the engine until it reaches operating temperature.
2. Check the load management status in BCM data display, under outputs.
3. If the status is active, with the engine running, disconnect the BCM from the dataline at the star connector (SP205) located at the base of the steering column.
4. If fans operate normally, check that the charging system is operating as it should.
5. Replace BCM if it shows load management status is active and the charging system is operating as it should.

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Please follow this diagnosis 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. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance.

(2000-05 Chevrolet Monte Carlo) and (2000-05 Chevrolet Impala)

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