Misfire

2001 GMC SIERRA HYBRID
245,000 MILES • 8.1L • V8 • 4WD • AUTOMATIC
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STEELEMAN63
  • MEMBER
  • 1 POST
Started up this morning and had a miss and when I revved it up it tried to clear up and then check engine light flashed twenty six times.
Jan 3, 2018 at 4:45 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
Hello,

This sound like you have a misfire which is probably caused by the spark plugs and wires that need to be replaced.

Here is a guide to help you:

https://www.2carpros.com/articles/how-to-change-spark-plugs

We should run the codes to see what comes up to confirm the issue.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run this test and get back to us.

Cheers, Ken
Jan 5, 2018 at 12:36 PM
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