Firing order diagram and timing degrees 1989 gmc 1500 series 350 engine

Question edited for clarity.
Question moved to model category.

3: 1988-95 5.0L, 5.7L and 7.4L Engines Firing Order: 1-8-4-3-6-5-7-2 Distributor Rotation: Clockwise.

GM Full-Size Trucks 1988-1998 Firing Orders Repair Guide

Diagrams

https://www.google.com/search?q=1995+GMC+5.7l.+C1500+SLE.+Suburban.+Firing+order

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firing order is 18436572 drivers bank 1 3 5 7, passenger 2 4 6 8

Hi.

Below you get all the parts breakdown for GMC Sierra 1500, including steering column assembly:

1500 SIERRA

Here diagrams for all 1989 GMC trucks.

If you need to take apart the steering column you will also need wiring. below the color codes and wiring tips:

GMC SIERRA 1988-2005 VEHICLE WIRING

Regards.

Ginko

Sierra 1500 also C/K Series have three engine sizes; check this...

1993 GMC C 1500 P/U 5.0 liter V-8 VIN "H"




1993 GMC C 1500 P/U 4.3 liter V-6 VIN "Z"




1993 GMC C 1500 P/U 5.7 liter V-8 VIN "K"




Hope helps (remember to rate this answer).

take the distributor cap off and remove the spark plug from #1 cylinder. put a piece of plastic bag slightly in the #1 cylinder wheny you turn the engine over just bump the starter and listen for the air and the plastic to start blowing out. now look at the position of the rotor that is where #1 cylinder wire goes.(make sure the piston is at the top or check the timing mark on the harmonic balancer it will be on the tdc 0 mark. look at the intake it will have the firing order on it. The ignition rotor turns clock wise that is the order that it fires the next wire on the distributor will go to the next number in the fire order cast
on the intake manifold turning clockwise.

Here is the firing order diagram for the 5.0 liter (305), 5.7 liter (350) and the 7.4 liter (454) V-8 engines (note position of locking latches/screws between the 3 and 6 and the 1 and 2 terminals on the distributor cap). Let me know if you need the 4.3 liter V-6 engine diagram (hopefully not in a 2500 series truck) or if you require any further assistance.

Here you go. Just follow the diagram. Have a great day.

The link below will provide the firing order and diagram you requested. Best of luck.
Greg

http://www.chiltonlibrary.com/content/images/8826/images/88262g36.gif

im pretty sure it's 18436572.left side 1357,and right side 2468.it's been a while but i'm pretty sure that's correct.

the firing order is
1-6-5-4-3-2