NChristian9
Newbie
I have a 1990 K2500 that is constantly shifting back and forth at highway speeds. Speedometer is intermittent and seems to jive with the shifting. I’ve replaced the speed sensor in the transfer case which made no difference. This year model has the drac integrated into the instrument cluster. I’m inclined to think the issue is a bad instrument cluster but wanted to get input here. Anyone else have this issue and have a solution? Appreciate the input!