On a road test for a customer I lost the brakes, as it developed a hard pedal without power assist. The condition was intermittent. Upon investigation I discovered the vacuum hose from the back of the intake to the power booster was softened with oil contamination and had begun to collapse cutting off vac to the booster. I installed a new hose assembly but this came out of nowhere and could cause problems for any driver at any time. The vehicle was a 1995 Chevy Lumina 3.4 V6. Clearance is very tight where the hose runs. I think GM should go to a hard hose instead of a performed rubber hose. The engine was not leaking oil. This failure was heat an normal wear. Being these cars are 10 years old they are starting to fail. I suspect every vehicle with the 3.4 L engine will have this same problem not just the Lumina.

- Oriental, NC, USA

Front brakes make a grinding, sqealing noise when backing.

- Zanesville, OH, USA

1- every time the weather is wet and cold, all 4 doors freeze shut. This is due to the design of the body. The doors allow water to collect all around the top and vertical sides and the water freezes...locking me out of the car. Neither the dealer nor mfg have a solution. 2- brakes: Every time the weather is wet, or even with high humidity the brakes squeal and grab which initiates the ABS system which in turn brings the car to a "jerky motion" stopping situation. Neither the dealer nor the mfg have a solution....and even more frustrating to me...neither the dealer nor the mfg seem to "give a [xxx]". information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Parma Heights, OH, USA