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2003 Chevy Tahoe Check engine light flashing

Tiny
KIPFRAN
  • MEMBER
  • 2003 CHEVROLET TAHOE
  • V8
  • 2WD
  • AUTOMATIC
  • 133,000 MILES
My check engine light flashes. Once in a while it will stay lit and pulls up a random misfire. It has no power and when you give it the gas the check engine light flashes. Sometimes for a while, sometimes for just a few flashes. What could it be?
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Tuesday, August 11th, 2009 AT 5:32 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
If the code indicates a misfire, when was the last tune up? ALso, have you checked to make sure the catylatic converter isn't plugging?
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Tuesday, August 11th, 2009 AT 10:26 PM
Tiny
KIPFRAN
  • MEMBER
  • 2 POSTS
The plugs and wires were changed about 3 months ago. Could it be a bad plug?
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Wednesday, August 12th, 2009 AT 6:49 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Yes, you could have a bad plug, wire. Also, make sure the converter isn't plugged.
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Wednesday, August 12th, 2009 AT 11:08 AM

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