My 1997 chevy blazer does not have a 4wheel drive switch

Could be the switch/valve in the front differential.

I recently had the same problem and I took the switch out of the dash and took apart the switch and found that the 2wd part had broken .I took the plastic cover for the switch and cleaned the buttons with A Qtip and left the broken plastic piece out .put it back together and instantly I had control of my 4wd.Good luck

Sounds like you need to take a look at you rear differencial.

I have the same trouble. It seems a relay is keeping it in 4wheel drive. I havne't solved the trouble yet. It may be a loose or corroded wire in the connector to the TCCM located in the passenger kick panel. Dealer part about $450 or more. For the moment I took out the fuse for the 4 wheel drive. It is located in the lower right hand side in the fuse the box under the hood. It disengages the 4wheel drive and I replace the fuse if I need the 4wheel drive.

please go to the web page below for a list of the recalls and what the problem is for the recall

http://www.carcomplaints.com/Chevrolet/Blazer/1997/recalls.shtml

Fly wheel or torque converter,either way your pulling out the transmission,very costly!

Hi; If this vehicle has electronic vacuum or pushbutton four wheel drive, the vacuum acuator switch is probably defective.

1997 blazer put car in park shut it off but, key won't turn far enough back to come out

check to see if front tires are cuping or feathering on outside of tread if 4wheel dr some alinement shop set toe &cam to pull center causeing this witch when tire wares makes this kind of noise.

same just happend 2 me,was told it was the neutral safety switch -but didnt start in neutral-took 2 shop 400 later it was the ignition switch runs great again hope i helped