2003 Chevy Tahoe Battery

2003 CHEVROLET TAHOE
118,000 MILES • V8 • 4WD • AUTOMATIC
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CHADGERTH
  • MEMBER
  • 2 POSTS
I have 2003 tahoe and the battery went dead. since i have not replaced the battery since the truck was new I assumed replace the battery. That did not work the truck idles rough and the new battery will not hold a charge (possible draw?). I brought the truck up to the local auto parts store to have them test the new battery and the altinator and they tested fine. I am at a stand still any ideas?
Apr 16, 2009 at 4:02 PM
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EUGENE123
  • ✓Experienced Mechanic
  • 273 POSTS
try a battery parasidic which is something that stays on all the time whether the car is on or not, check all your electrical things to see if anything is staying on
Apr 16, 2009 at 7:06 PM
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CHADGERTH
  • MEMBER
  • 2 POSTS
I have allready had it in for Diagnostics and could not find a parasitic draw. they say the PCM might need to be reset? Can you reset a PCM?
Apr 17, 2009 at 12:19 AM
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EUGENE123
  • ✓Experienced Mechanic
  • 273 POSTS
yes you can try taking the negative terminal off the battery for 5 mins and then put it back on this usually resets them
Apr 17, 2009 at 7:26 AM
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