this vehicle sets a code 51 egr circuit. the GM service manual does not say conditions for setting the code. I have replaced the vacuum switching valve and the light came back on I removed the egr valve and found the passage was plugged to the throttle body I ...

FIX posted 10/25/2000

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