lovinlife06

Ok, so my aunt and uncle have a used Blazer 2001 LX and we were backing out of there driveway (which is steep i might add) at the lake to go hunt arrowheads but all the sudden it made this wierd noise and my uncle seems to think its the transmission but we arent completely sure and thinking that maybe it jumped a gear because now we cant go in reverse! Any mechanics in here or just anyone with a suggestion or a site i can go to would be awesome! Thanks ahead of time!