i have an 88 s10 blazer auto, it seems to make a loud clanking noise when i put it into reverse. i pulled the driveshaft out thinking it was the universals but they were fine and greased well. it also likes to make a slight clanking noise when downshifting or when im slowing down to stop it will clank then jump.

do i need a new trans? how hard of a job is it?

 

Are you sure its the trans and not the rear? If theres excessive ring and pinion wear it will clunk similar to how loose driveshaft universals would

 

im sorry i should have mentioned it has 4x4, altho i have never used it. but when i hear the clanking/clunking noise it sounds like the noise coming up through the 4x4 box on the floor.

ive checked fluid level, its in operating range and its new
universals are good.

i dotn knwo if the 4x4 would have anything to do with it.

 

i have an 86 4x4 with the 2.8 and i had a "transmission specialist" look at it and he says its fine. i have had my blazer for about 4 years now and its been doing that eversince i bought it and it hasnt given me any problems at all. i would have to say this is my most reliable vehicle i have