firing order

2010 GMC TERRAIN
70,000 MILES • 3.0L • V6 • FWD • AUTOMATIC
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RGOMEZ6868
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  • 1 POST
i need a firing diagram. #1 cylinder not firing correctly?
Jan 11, 2015 at 9:43 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
It sounds like you have a ignition coil going out but here is a guide and the firing order to help you fix it. Lets run the codes. #1 cylinder is on the furthest forward head.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Check out the diagrams (Below). Please let us know what you find.
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Jan 11, 2015 at 11:16 AM
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