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2003 Cadillac DeVille 4.6L MIL Lamp on
Posted to GM Driveability on 3/21/2012 20 Replies

This nightmare came to us from another shop. Car had a miss and check engine light was flashing with a P0300. Found sparkplug wells full of oil and insulator boots carbon tracked. We compression tested engine, replaced all sparkplugs, valve cover gaskets, and ...

20 Replies Received (View Replies)

  Related Documents & Media  2003 Cadillac DeVille

 
Message Closed w/FIX

car Vehicle Data

2003 Cadillac DeVille

VIN 1G6KD54Y83
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursCruise, Intermittently

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2003 Cadillac DeVille

VIN 1G6KD54Y83
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursCruise, Intermittently

Trouble Codes

P0300Multiple Misfire Detected