2500HD-Vortec, I have a 2000 Tahoe with the same color leather seats and recently sent an email to Chevy to find out what kind of leather is used. As soon as I get a reply, I'll let you know. Before learning there was even such a thing as "coated" leather, I was using
pinnacle cleaner and conditioner to good effect. I also wipe regularly with a slightly damp terry cloth or miracle towell and occassionally use a little 303. However, if Chevy says the seats are coated, I'll stick to wiping clean and using 303.