Two problems related to brake disc have been reported for the 1999 Chevrolet Astro. The most recently reported issues are listed below.
At 29,000 miles the front brake rotors, bearings and pads had to be replaced. When I complained that this was low miles for brakes to fail, the manager said the brakes go out early on this model because the back brakes were not so good since the self adjusting was not reliable. I wrote twice to gm asking for clarification. I spoke to the manager;s boss who said I would replace brakes every 30,000 miles because the brakes were light for the van weight. Now at about 43,000 I am again having brake problems. Seems wrong to me. Item 2 -at 35,425 miles I reported when the van was in for service that I push the gas pedal down and the van just did not want to go. Then if you held the pedal down after a bit, the van would jump forward because it suddenly got gas. This was bad when anything was around close because of the sudden acceleration. The shop said they would replace a part under warranty. I think it was called a throttle body, but I am not sure. They repalced nothing. They cleaned the throttlebody plate. The problem is now more noticable. From discussion with other people, it seems this lack of going as you put the pedal down, and then the surging ahead is happening to many people. This comes from an internet car problem chat site.
During a moderate braking the vehicle will pull to the left side. It is very dangerous due to you have to hold the steering wheel while braking to keep from pulling into oncoming traffic.