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1999 Pontiac Grand Prix GTP 3.8L MIL Lamp on
Posted to GM Driveability on 5/12/2004 6 Replies

Good morning fellow techs. I have this car that will set these 4 codes what appears to be at the same time intermitantly. I have not been able to actually duplicate the same conditions, but the codes are in history with a service engine soon light today again ...

6 Replies Received (View Replies)

  Related Documents & Media  1999 Pontiac Grand Prix GTP

 
Message Closed w/FIX

car Vehicle Data

1999 Pontiac Grand Prix GTP

VIN 1G2WR5211X
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently
Misc.Gtp

Trouble Codes

P0650Cylinder 2 Misfire
P1637TCM Internal - EEPROM Performance
P1653Fuel Level Output Control Circuit Malfunction
P1673Engine Coolant Over-Temperature Lamp Control Circuit Malfunction
Message Closed w/FIX

car Vehicle Data

1999 Pontiac Grand Prix GTP

VIN 1G2WR5211X
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently
Misc.Gtp

Trouble Codes

P0650Cylinder 2 Misfire
P1637TCM Internal - EEPROM Performance
P1653Fuel Level Output Control Circuit Malfunction
P1673Engine Coolant Over-Temperature Lamp Control Circuit Malfunction