Did they drop out at the same time? may be start with a scan for any clues, the speedo may be a faulty speed sensor, if both at the same time, it may be related to the dash circuit board.
Apr 24, 2013 at 4:18 PM
EXOVCDS
CAR REPAIR CONTRIBUTOR
1,883 POSTS
Replace the speed sensor in the differential.
Thomas
Apr 28, 2013 at 1:33 PM
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