I change the oil on a GMC HD 2500 2004 The change engine oil light is still on how do I reset it

Use the link posted above to learn the correct procedures.

This was the original question posted here: “Something inside Ignition cylinder broke so we change the housing and Pass lock cylinder”.. Tags: gmc, 2500 pickup

You originally ask for assistance with ignition key programming ! I’ll offer no more assistance! .... Enlist professional **HANDS-ON** help .. Marioaco