2007 GMC Sierra transmission

DON2833

MEMBER
2007 GMC SIERRA
5.3L
V8
4WD
AUTOMATIC
85,000 MILES

Delayed shift from 1st to second { Slip }

Saturday, March 29th, 2014 AT 1:18 PM

1 Reply

KNOWLEDGE IS POWER

MECHANIC
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

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