Question about GMC Sierra 1500
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Posted on Jan 02, 2017
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firing order is 1-8-4-3-6-5-7-2. #1 usualy points to the #1 cylinder thats front driver side of engine On the cap. Remove the number 1 spark plug and have someone crank a little unitl you hear/feel air. The possition of the rotor is where your number 1 is, go Clockwise to place the wires in the correct order.
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