I own a 2009 Cadillac DTS, which has 80,000 miles on it. The question is , Should you follow the manual which says transmission service at 100,000 miles or listen to the dealer who does my oil change. They suggest I should get it at 60,000 miles, plus they also suggest a tune up, engine flush, and something else, which the manual does not, estimated at $1100.00. I do not think i need to do all that. My driving is very normal. No stop and go rush hours.
The reason I am asking about the transmission in particular,is because I use to own a Buick Rendezvous, whose manual suggested transmission service at 100,000 miles and the mechanic i used suggested at 50,000 miles. i ignored him. And lo and behold my transmission went out.