Pops code when accelerating

[erock198]

03 Yukon xl Denali 6.0L

I don't know if it is bad gas or what? When I romp on the pedal I get a code. It happens more times than none. I have a new in tank pump

thoughts?

 

[ezdaar]

1st thought, is WHAT code?

 

[bai78]

no code = no diagnosis

 

[erock198]

yeah you all make sense...Duh!

 

[rich5368]

Just shooting from the hip with no info, a code under load to me could be pinging/knocking. Could be a sensor going bad and picking up false knock. Could be a million other things. Pinging can definately be caused by bad gas so either way I'd get this checked out immediately.

 

[erock198]

i was thinking 134k without a tuneup......

 

[ATL]

i was thinking 134k without a tuneup......

that may not be a bad assumption, but why not just go by autozone and have it checked for free?

 

[erock198]

the light goes off after a day or so. usually before i get a chance to have it checked but i will next time

 

[ATL]

your ecu stores codes, itll prob be in there even if the light isnt on

 

[erock198]

it's back on now