2003 GMC Envoy SLT 4.2L Poor Fuel Economy, MIL Lamp on
Vehicle came in with MIL light on and codes P1523 Throttle Plate Position, and P0172 System runs rich bank 1. Hooked-up fuel pressure gauge found pressure to be 55psi, spec call for 54psi. Fuel pressure regulator has no vacuum to it. Is this normal. I did try ...
Summary posted 5/25/2006
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle 3 Replies Received (View Replies)3 Replies Received (Hide Replies)Related Documents & MediaRelated Documents & Media |
Message Closed w/Summary
Vehicle Data2003 GMC Envoy SLT
Trouble Codes
|
Message Closed w/Summary
Vehicle Data
2003 GMC Envoy SLT
VIN | 1GKDS13S93 |
Engine | 4.2 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Poor Fuel Economy, MIL Lamp On |
Trouble Codes
P0172 | Fuel System Too Rich (Bank 1) |
P1523 | TAC Module Return Performance |