Brought my Sierra in for a faulty trailer light connection and a separate issue with an extreme odor in the passenger compartment. The advisor, Eric, took careful consideration of the issues, assured me they would take care of both problems, and provided me with a loaner vehicle. After only a few hours, he called to report both problems had been identified and solved. (Yes, it was a dead mouse in the blower motor.) Lowell GMC is always on top of their game. Thanks to Mike and Eleanor and their entire staff.