* 49, 723 miles - sludge buildup, pulled out engine to remove any build up and reassembled. Took 75 days to identify problem and correct...paid $5, 680...did they make all the proper adjustment after reassembling the engine? Causing the engine to sieze at 73, 500 miles? * 68, 720 miles - hesitation and stuck at 3, 000 rpm, replaced spark plug. Took 45 days and paid $2, 143. * 73, 285 miles - suggest to replace transmission, said no and they changed filter and fluids. Only 13 days and $545. * 73, 500 miles - replacing engine!!! Turned in October 3, 6 days after transmission problem. Quoting $20, 700 for new trans & engine... Dealer kept saying not service with them...but I am next door to one of their service partners! Attached summary sheet is from the Dealer's service department. THIS IS GM QUALITY ISSUE...I SHOULD HAVE NEW TRANS & ENGINE NO COST!