went to the dealers today to get the window trims replaced (the ones that are on the top of the door frame mine became discoloured )anyway i went to service reception following a phone call yesterday to take the car in and be prepared that the labour time would be 3 hours so when i enquired they knew nothing about the job these were agreed to be replaced as a condition of purchase of my car 3 wks ago , it transpires that they had claimed for these on another vehicle and the new ones fitted to mine , as my car is under 12 months old i cannot see the logic in this, other than the dealer making a warranty claim against GM never mind they have been replaced and it only took them half an hour to do the full job i will see what happens next week when it is booked in for a flat spot on acceleration 1.8 vvt sri. andy