One problem related to transmission noise has been reported for the 2006 Chevrolet HHR. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Chevrolet HHR based on all problems reported for the 2006 HHR.
At 5,00 miles the seal on the transmission blew. Car taken to dealership for repair. Since that time there has been a noise when accelerating. Dealer tried replacing catalytic converter, was not the problem. Manufacturer notified of on going problem, they sent a rep who said the noise was a usual noise. Service manager requested a second opinion from manufacture. Car now has 14,500 miles on it and has been back to the dealer for this same problem numerous times. As of this date we are still waiting for another rep to look at it.