On 11/20/2008 I took my 2001 Chevy to Young Chevrolet for check up for loss of coolant (invoice # CTCS434458), truck has past histroy of repair for replaced gaskets and loos of coolant. Also light for engine check up was on. Electrical problem of horn & tow haul repair. No problem with the air pressure gauge was noted on the bill as it was working when the truck was dropped off. Picked up truck 11/21/2008 before leaving the premises I noticed oil pressure gauge was not working went back in waited 1.5 hours only to be told it had not been working when the truck was left and would cost $242.00 to repair. This was not the case the oil guage was wokring when dropped off. There is not indication on estimate or that the it was not working. Also engine repair light came back on 11/22/2008 now my truck has more problems then when I dropped it off after the paying $316.00. Dealer wantees $242.00 for more repairs I didn't have when I took it in.