Vibration at 60-75 mph.
Heated seat failed.
Check Oil Level indicator stays on.
The vibration was noticed almost immediately. It was returned to the dealer several times to balance and re-balance the tires. I then stumbled onto a GM service bulletin that described the trouble I was having. The dealer told me that it needed new tires before they would look any further. After replacing all four tires and having them computer balanced on the finest equipment available, the dealer still refused to take the action stated in the service bulletin.
Then I headed for the dealer owner's office where he finally saw to it that it was repaired properly.
I would like to know what was done to correct the problem.
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