09 Suburban 6.0 Cranks but won't start.
#1
09 Suburban 6.0 Cranks but won't start.
I have a 2009 Suburban that cranks for days but won't start, it has spark and fuel pressure no DTC's set or historical codes. I did a compression test and only have compression on one cylinder of 55. Don't know what the heck is going on any clues, I don't think it detonated and put a hole in every piston or blew every portion of the head gaskets. Cylinder with 55 is 2nd one back from the grill on the driver side and yes I did a wet test and it went up to like 57 all others remained unchanged.