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service engine light on 2002 Chevrolet Avalanche 1500

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
I just parked my truck and came back out side to it starteded up then all the sudden it started to vibrate really bad and service engine light came on while it was just idling felt like truck wanted to just die but while driving it works fine what could be causing this
(1) Answer
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Sounds like a misfire, leaking injector, failing fuel pump or could be something else. It's really hard to tell without running a few tests and checking for diagnostic trouble codes in the computer. I suggest starting with checking those codes with a scan tool.