service engine lite after a few hours

[bucket]

after an hour or more on the highway, my service engine lite comes on...after shut down and re-start..no lite..
until...an hour later...lol...lites back on ...shut down...re-start..no lite till an hour later...lolhnoes:W kegger

 

[gmjunkie]

Check your gas Cap!Make sure it's tight and the seal is good!

 

[Schrade]

Get [History] codes.

 

[bucket]

Check your gas Cap!Make sure it's tight and the seal is good!

aye aye capin