2003 Chevy Suburban Throtle Bore

2003 CHEVROLET SUBURBAN
75,000 MILES • 6 CYL • 4WD • AUTOMATIC
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03BURBAN
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  • 3 POSTS
I recently followed your instructions on how to clean the throttle bore. I have a 2003 Chev. Suburban with 5.3L engine. The car can now climb a hill at 10MPH without touching the throttle. How do I fix this problem? I do not see anyway to adjust the TBore. It appears to be electronic? The Tbore alos appears to be slightly opened compared to when I first took the air intake off.
Sep 1, 2008 at 4:54 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
Can you close it by hand? It seems either the cable is binding, or the shat is partially worn, or the tps needs to be replaced.
Sep 1, 2008 at 5:05 PM
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03BURBAN
  • MEMBER
  • 3 POSTS
Yes I can close it by hand.
Sep 2, 2008 at 7:40 AM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
Try removing the cabe see if it closes by itself, if not check for movement in the shaft, and the TPS for a flat spot.
Sep 2, 2008 at 11:31 AM
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03BURBAN
  • MEMBER
  • 3 POSTS
I do not believe that there is a cable, it appears to be controlled electronically.
Sep 2, 2008 at 11:45 AM
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