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# 7 Misfire and intake valve hits the piston
Posted to Technical Discussion Forum on 3/16/2020 45 Replies

This is a new customer the truck has 407380 kms, customer stated he was told there was no compression on one cylinder and truck ran bad intermittent. I drove the truck city and highway no issues. had p0300 and misfire history clearly showed number 7 was a prob... Login to read more.

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car Vehicle Data

2009 GMC Sierra 2500 HD WT 6.0L

Engine6.0 L
Trans6-speed Automatic (Electronic)

car Vehicle Data

2009 GMC Sierra 2500 HD WT 6.0L

Engine6.0 L
Trans6-speed Automatic (Electronic)