Three problems related to dash wiring have been reported for the 2003 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 GMC Yukon based on all problems reported for the 2003 Yukon.
I was driving my daughter home from tutoring when I realized the speedometer does not work properly. I happened to be on the interstate at the time so I kept up with the other cars, but going down the streets to our house in the dark made me uncomfortable. Sometimes it sticks at zero and other times it maxs out at 120 mph. The dealer I called said this was a common problem and would cost about $600+ to fix and also it would take a few days.
Having electrical problems with the vehicle. Seats will move while driving,heater in seats come on with out light indicating that they are on. Air conditioning speeds will vary. There are to many problems. But the main one was putting the car in drive and it would go into reverse.
While driving at night the headlights and dash lights flicker off and on. This condition only occurs while traveling at speeds above 35 mph and when hitting a bump or making a curve. This condition is not only distracting, but when driving at night with no other ambient light I am unable to see adequately ahead of my vehicle. I have had drivers ahead of me pull over thinking that I was flashing my lights at them and other drivers get irate believing that I am "bright lighting them". This is a safety issue that appears to be widespread on the denali's with stabilitrak. Gm states that this condition is "normal". I believe that headlights are meant to burn steady and not flicker off and on. I am requesting that NHTSA investigate this with the auto manufacturer to mandate a fix before there are injuries attributed to this condition.