2007 GMC Sierra transmission

2007 GMC SIERRA
85,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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DON2833
  • MEMBER
  • 1 POST
delayed shift from 1st to second { Slip }
Mar 29, 2014 at 1:18 PM
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KNOWLEDGE IS POWER
  • EXPERT
  • 1,136 POSTS
drop the trans pan and look for dark fluid or stuff on the magnet. if not it could be an electronic issue. at that point have a diag computer hooked to it and see if there are codes
Mar 29, 2014 at 4:36 PM
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