× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2002 Cadillac DeVille DHS 4.6L MIL Lamp on
Posted to GM Driveability on 11/6/2008 8 Replies

this vicicle originally came in with mil light on, and po420 code stored. customer went and bought a walker converter, which we installed for him. a week later the mil light came on again and found same code present, had customer get converter warrantied and r...

8 Replies Received (View Replies)

  Related Documents & Media  2002 Cadillac DeVille DHS

 
Message Closed w/FIX

car Vehicle Data

2002 Cadillac DeVille DHS

VIN 1G6KE54Y22
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

420catalyst ineffiency
Message Closed w/FIX

car Vehicle Data

2002 Cadillac DeVille DHS

VIN 1G6KE54Y22
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

420catalyst ineffiency