Two problems related to emission control have been reported for the 1999 Chevrolet Blazer. The most recently reported issues are listed below.
In 2003, the engine light came on, the air pump, breather, hose and fuse kit needed to be replaced, I paid out of my own pocket for this repair. In 2004, the service engine light came on, the same items needed to replaced and again the dealership wanted me to pay over $600 for service when last year it was over $300. I have replaced both upper and lower ball joints because of cracking noise, everytime I turned left. I replaced the hubs, because a cracking noise. Chevrolet and the dealership were no help, other than they agreed to pay half for air pump repair. Both didn't care for my situation. I was told by the representative from Chevrolet that my next purchase on a gm product get the extended warranty, because gm makes "junk", so protect yourself! nice attitude!.
When putting gas into vehicle and after getting back into vehicle, consumer can smell gas fumes. They usally stay in vehicle for a few minutes. Contacted dealer, and the dealer replaced a canister, but the problem still exits.