Speedometer in 2003 Trailblazer is showing wrong speed intermittently. Seems to be a known problem to GM. Is this something I can fix myself?
Have you contacted a Dealer? It could be a mandated repair. Ie they do it even out of warranty.
No I have not. I’ve never had good experiences at GM dealerships.
Just called GM hot line and was told that this model and year are not covered under any recalls.