Ron starts the hour talking about a package he received this week from a school in Ohio : takes a call on an 05 Pontiac Vibe with a check engine light and a lean mixture code : takes a call on an 05 Chrysler Sebring with questions on whether to replace the timing chain : takes a call on a 97 Chevy 1600 with a check engine light : takes a call on an 08 Ford Expedition where the transmission has a kick when shifting to or from 1st gear : and takes a call on an 08 GMC Sierra with a lean code on 2 banks.