Engine Performance problem
1986 GMC Sierra V8 Two Wheel Drive Automatic
I need the firing order on gmc suburban
have the same problem?
Tuesday, November 4th, 2008 AT 10:11 PM
The firing order is 1 8 4 3 6 5 7 2 driverside head 1357 passenger 2468
get #1 cylinder up on compression stroke and see where the rotor is pointing this will be the start of your firing order goes clockwise