Misfire

Tiny
STEELEMAN63
  • MEMBER
  • 2001 GMC SIERRA HYBRID
  • 8.1L
  • V8
  • 4WD
  • AUTOMATIC
  • 245,000 MILES
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.
Wednesday, January 3rd, 2018 AT 4:45 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 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
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Friday, January 5th, 2018 AT 12:36 PM

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