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1999 Cadillac DeVille d'Elegance 4.6L MIL Lamp on
Posted to GM Driveability on 1/26/2004 7 Replies

Hey guys, I need help with this one. This vehicle keeps coming back about every two months with code P0300. History codes tell me random cylinders are misfiring, different ones each time, and also long term fuel trim was at +30 bank one and +15 bank two when c...

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  Related Documents & Media  1999 Cadillac DeVille d'Elegance

 
Message Closed w/FIX

car Vehicle Data

1999 Cadillac DeVille d'Elegance

VIN 1G6KE54Y9X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently
Misc.D'elegance

Trouble Codes

P0300Multiple Misfire Detected
P0603PCM Internal Module Keep Alive Memory Error
Message Closed w/FIX

car Vehicle Data

1999 Cadillac DeVille d'Elegance

VIN 1G6KE54Y9X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently
Misc.D'elegance

Trouble Codes

P0300Multiple Misfire Detected
P0603PCM Internal Module Keep Alive Memory Error