I have an 02 gmc sierra z71 auto with 80,000 miles. The problem is, a couple of days ago the check engine light flashed on real quick i didnt think anything about it. Now the truck barely starts, it misses under any accelleration. It does have a code now and i brought it to the shop which they said there is a misfire on cylinders 1,3,5,7 the whole half of the motor. They replace all the coils and plugs wires, checked fuel pressure, changed maf, everything checke out ok and still the same thing missing real bad now i am kinda lost on where i should go with this next any help is appriciated thanks.
The only thing about hte fuel pump though is the fuel pressure is good. While changing the coils is the newer version of cap and rotors.
Yeah that makes sense if the cat is restricting flow since it is that whole half i just needed a little vision outside the box thanks.
The only thing about hte fuel pump though is the fuel pressure is good. While changing the coils is the newer version of cap and rotors.
Yeah that makes sense if the cat is restricting flow since it is that whole half i just needed a little vision outside the box thanks.