Front seats ripped soon after we bought the van. Replaced with conversion seats from a conversion manufacturer.
At 68,000 miles we had it towed into the dealer because the van was lagging going up hills and causing a loud knocking noise. This ended up being the distributor cap and rotor. $538!!? for a cap and rotor?!
They also cleaned the fuel lines at that time because they thought it was bad fuel.
At 72,000 miles (4000 miles later) the same issue happened with the cap and rotor. I was now told by a different dealer that the first dealer did not remove the screen that was supposed to keep out dirt, but held water and caused the corrosion and arching. They also charged $78 for the "diagnosis" even though it was "covered" by the GM warranty from the previous "repair".
At 78,000 the problem started again and I replaced the cap and rotor again along with the plugs and wires, myself.
Rear lights would not operator properly from the day we bought it. It was a short in the sockets and required the replacement of the rear lighting wiring harnesses. That was yet another $670 just so I could sell it.