2006 Hummer H2

Tiny
PREM
  • MEMBER
  • 2006 HUMMER H2
  • V8
  • AWD
  • AUTOMATIC
  • 31,000 MILES
Engine running rough no code. Sometimes different sounds from exhaust
Wednesday, May 20th, 2009 AT 5:38 PM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Is it lacking power, It may have a plugged or restricted cat. Being an 06 it should register misfires and set a p0300 misfire code. You may opt to have it looked at, particularily cylinder misfire data and fuel trim values.
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Friday, May 22nd, 2009 AT 11:40 PM

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