When hot and going up a hill and hit passing gear does not accelerate or speed up

1992 GMC SONOMA
154,000 MILES
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BRETTPATTERSON21711
  • MEMBER
  • 10 POSTS
Did a tune up and took to tramission shop everythings good with trans.
Mar 28, 2012 at 7:30 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Tranny is good-hmm.... try checking the exhaust system for restriction and also check the throttle position sensor
Mar 28, 2012 at 7:54 PM
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BRETTPATTERSON21711
  • MEMBER
  • 10 POSTS
What about the fuel filter, could that be a problem?
Mar 28, 2012 at 7:58 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
To rule out the fuel filter and a weak fuel pump you need a fuel gauge
Mar 28, 2012 at 8:27 PM
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