Stalling

2003 GMC C1500
V8 • 4WD • AUTOMATIC
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TFBEST
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  • 2 POSTS
2003 GMC Sierra 1500. Originally needed boost to start, then stalled out 1 mile later after braking. Replaced battery now Starts no problem, idles fine but when revved then released the lights dim and battery dips to a quarter of the gauge. Lights also dim when switching into gear but as long as we give it gas it won't stall. Will drive okay but stalls on braking. Battery, alternator and Fuel Filter all brand new.
Feb 2, 2011 at 5:30 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Have the charging system checked out especially the computer controlled of the alternator's field generation circuit-
Feb 2, 2011 at 6:10 PM
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DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
Need to test ALT whether new or not seems charging problem
Feb 2, 2011 at 6:10 PM
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TFBEST
  • MEMBER
  • 2 POSTS
Alternator tested fine.
Feb 2, 2011 at 6:17 PM
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