Sunday, September 12th, 2010 AT 11:01 AM
I purchased my trailblazer back in 2006 with 21,000 miles on it. Other than oil changes and tires I have never done anything else. The truck is starting to shift rough but I have been told they will no flush the transmission fluid or it will make the transmission too loose. What all should I have done to get it back up to date?


