2008 Gmc Sierra Kind Would Cause Automatic Truck Lower Power First

2008 GMC SIERRA
128,000 MILES
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KTALLBULL
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  • 2 POSTS
What kind of problem would cause automatic truck to have lower power when first driving off, then shift very hard when shifting gears?
Feb 12, 2013 at 6:10 PM
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DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
Check engine light on? have checked fluid?
Feb 12, 2013 at 7:19 PM
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KTALLBULL
  • MEMBER
  • 2 POSTS
Yes, check engine light came on them problem started. Did not check fluids.
Feb 12, 2013 at 9:54 PM
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DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
have codes read at parts store post willl advise
Feb 13, 2013 at 9:10 PM
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