I'm willing to bet they cleared it and it came back. If they say no, ask to see the code history. The ECM stores the last 6 codes in its memory. The ECM has to wait for certain conditions to set a code and it has to happen twice.
04 SE, White, CC, 4x4, B.T., Pop w/capt's, Util. Bed package,Splash Guards,Floor Mats. No mods.(none planned except for inchannel vent visors and an 07 exhaust). Gas whore.