It sounds like the auto hub's are not disengaging. Check the vacuum line on the front axle
bad clutch bearing
It is the front hub/bearing assembly; this is a fairly common problem. Buy a new one from the dealer; some aftermarket ones are worse.
Bad wheel bearing or there is a problem with the tire itself.
Haynes makes a manual with the wiring schematic for the O2 sensor on a 1991 Chevy Blazer S10. The manual can be found at most book stores.
The metal band holding the exhaust is broken.
Need to know what year it is, it makes a difference.
Could be a plugged fuel filter or a bad fuel pump.
the blazer was stoped being produced in 2005
Yes. it is the same as S10. Alston Cassis Works, makes a kit, with everything you need, from mounts, to headers.
Possibly a wheel bearing
when you turn your key and you only hear humming noise, the problem will most likely be that the starter is not engaging the fly wheel, its turning but is not sliding forward to do its job. have the starter check.
There are three models of the Chevy Trailblazer. The standard model, the EXT which has a 3rd row seat and makes it a 7 passenger and the SS which is super sport.