Question about 1989 GMC Suburban

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I need a diagram for spark plugs to distibuter cap for a 89 gmc suberban

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  • gotoneruns2f Aug 27, 2010

    How about a picture cause the #s aren't helping me much

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  • GMC Master
  • 1,757 Answers

For the 1989 GMC Suburban I do not know if you have the 5.7L or 7.4L, however both have the same firing order, cylinder layout and distributor layout:

Firing Order:
1-8-4-3-6-5-7-2

Cylinders:
.......(back)........
|..8..............7..|
|..6..............5..|
|..4..............3..|
|..2..............1..|
........(front)

Distributor Connections:
.....(back)
(+) 6.....5
3...............7
4...............2
.....8.....1 (+)
.....(front)
Rotation:
Clockwise

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

Posted on Aug 27, 2010

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