× 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
2003 GMC Envoy SLT 4.2L MIL Lamp on
Posted to GM Driveability on 5/28/2008 7 Replies

Hey Guys, I have this 2003 Envoy with a U1000 code that keeps resetting under both PCM & IPC. Vehicle came in and customer stated that MIL light was on but went off on the way over to us. For the P0128 code I'm going to replace the thermostat. The U1000 code i...

7 Replies Received (View Replies)

  Related Documents & Media  2003 GMC Envoy SLT

 
Message Closed w/Summary

car Vehicle Data

2003 GMC Envoy SLT

VIN 1GKDT13SX3
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0128Cooling System Malfunction
U1000Class 2 Communication Malfunction
Message Closed w/Summary

car Vehicle Data

2003 GMC Envoy SLT

VIN 1GKDT13SX3
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0128Cooling System Malfunction
U1000Class 2 Communication Malfunction