I replaced the GEM to coreect the inop 4wd problem. Now I have a speedo that is out of control. When going approx. 9 miles an hour, the speedo, and data on scanner, reads in the hundreds. I was told by dealer that no flashing would be required for gem. Is there some calibration step I'm missing. Thanks for your time.
have the same problem?
Friday, November 16th, 2012 AT 3:46 PM