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I have a 2000 Impala with a 3.8 liter engine. The vehicle ...
Sent to Car Experts January 17 01:57 PM

I have a 2000 Impala with a 3.8 liter engine. The vehicle overheats when I do not have the AC on and am not moving

Optional Information:
2000 Chevrolet impala 3.8

Already Tried:
I run it with the AC on

Customer (name blocked for privacy)
Status:  Closed   Value: $10
Answer
January 17 2:09 PM (12 minutes and 24 seconds later)
         
ACCEPTEDCheck Mark

LA1 L36 Engine Overheat and, or Cooling Fans Inoperative Intermittently - kw cluster coolant gauge hot temperature IPC #PIC3045B - (Nov 18, 2004)

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

.

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

Condition/Concern:

Engine overheat and, or cooling fans inoperative intermittently.

Recommendation/Instructions:

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.

.

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.

Models:

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

.

< wid="100%"> <> < align=left wid=778>GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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