SOURCE: Need firing order diagram for 2002 gmc envoy
one, five, three, six, two, four
The plastic intake should have this sequence molded into it somewhere, and even the corresponding cylinder numbers in front of their respective holes. Have fun, and thanks for posting on Fixya.com
SOURCE: I need the firing order diagram for a vortec v6
Below is the diagram you requested. It's for a 94 Jimmy with a 4.3L engine. Best of luck.
Greg
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