GM AFM misfire

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GM AFM misfire

Posted to Technical Discussion Forum on 9/11/2014 5 Replies

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That being out of the way, I've got a weird one. '07 GMC Yukon with the "Flex-Fuel" 5.3 and "Active Fuel Management." Dead miss on #1 and a P0300, but only under certain conditions. Start 'er up, she runs just fine. Get 'er out on the road, and... Login to read more.

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Vehicle Data

2007 GMC Yukon SLT 5.3L

Engine	5.3 L
Trans	4-speed Automatic (Electronic)

Vehicle Data

2007 GMC Yukon SLT 5.3L

Engine	5.3 L
Trans	4-speed Automatic (Electronic)

5 Replies Received (View Replies)

5 Replies Received (Hide Replies)

Vehicle Data

2007 GMC Yukon SLT 5.3L

Vehicle Data

2007 GMC Yukon SLT 5.3L