My 2004 GMC Envoy XL has flickering dashboard and headlights. I have taken it to the Weld County Garage Service Dept where it was purchased for this problem. They told me they were instructed not to fix the problem that GM was attempting to gather data regarding this problem.
They did clean the inside of the battery cables that attach to the battery because they battery kept failing during the diagnostics. A slight film was found on the inside of the cables. They cleaned them and advised this might fix the problem. It has not!
The lights still flicker no matter what time of day it is, no matter the temperature or time of day.
Can anyone help me as to who can fix this. I do not want to have to pay for this because I am afraid it is an electrical problem and we all know that could still be VERY expensive.
Please someone at GM help me with this problem.