The first car I bought from Sewell was an early-model Northstar STS. At 30,000 miles or so, the engine developed a bit of piston slap and they rebuilt the engine, no problems, when hearing the slap after the engine cooled overnight. Later, about 1000 miles after the warranty expired, the catalytic converter started rattling. I expressed disappointment on hearing how much replacement would cost. The service advisor, on his own initiative, talked to the service manager and called me later the same day, telling me the repair would be done at their material cost and zero labor charge. As a result, I've purchased six more Cadillacs and Saabs from the dealership. In all instances, I'd done cost/price research before meeting with a sales person. In all instances, the first price quoted was within a few hundred dollars of what I'd calculated as a fair price for both of us. Of these six, only one has needed more than routine service. This was an early-model XLR program car, ie. used car. After
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