Yes. I own a 1993. Stock they have a locking diff that only works in super low, but if you remove a pin from the 2wd/4wd gear selector they have a locking differential in every gear of the subtransmission
The Detrioit Locker was common on Z-71 4x4 though i cannot say it is on every Z-71.
The locking differential came on some of them. To determine if a particular Blazer has a locking differential you need to look for code "G80" on the RPO list. The RPO list is on a sticker in the glove compartment.
Inside the tube next to the front differential there is a sleeve that is actuated over the gear locking the diff into 4x4. You can see a plastic cover over the motor used to engage the lock.
Differential lock is a driver controlled locking mechanism which locks the speed differentiation of axle halfshafts in differential mechanisms.After locking, both wheels rotate in same speed.But the interaxle differential(IAD) lockstopsthe speed differentiation of two axles in Tandem axle vehicles by locking the inter axle differential(third differential),after locking IAD both pinions rotate in same speed.
There is usually a tag on the axel with the info you need. If all else fails call your local GM dealer or 4x4 shop.
The front differential is an "open" differential. No limited slip components there.
Jack up the front of the car, put in nuetral, and spin one wheel. If the opposite wheel spins the same way, you have locking differential.
There is either a problem with the actuator in the front differential--BAD ACTUATOR. Are there is a problem with the differential ---RING and PINION asembley.
All Ford Rangers have a rear differential , and if they are 4X4 equipped , a front differential also
whichever it originally came with. the locking was not so common.
F-150 has never had a locking differential until the 2009 F-150 FX4 model. Only choices before the 2009MY was a limited slip or open differential.