Vehical shifts from 2nd to 3rd gear quickly hi rpms at moment of gear change on 2003 GMC Yukon

Is there sensor that needs replacing..also speedo doesn't work.

by in Belleville, MI on January 30, 2013
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , January 30, 2013
have codes and trans data read and post codes. seek a free diag from aamco then shop prices