its probably on the front right side of the axle and you just unscrew it and put a new one in if you are lucky. I just changed mine in my Chevrolet silverado and had to put in a new wiring harness
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On a 97 Blazer it is underneath the battery. Remove the battery and the plate it sits on. It is below there.
AutoZone.com
under the battery plate
four wheel drive actuator less then $50 online at http://www.autozone.com. the four wheel drive actuator is basically an electronic hub locking system. replacing this part should fix 'er up! p.s. i have a '94 s10 blazer vortec v6 same problem and it worked!
Need to put truck in 4x4 with engine off, transmission in park key onTake a test light and check the wires on the Actuator, and see if they are hot.If they are hot Then replace the 4x4 Actuator in the front housing.If they are not, Then check the 4x4 fuse
The actuator on a 4-wheel drive allows the vehicle to shift into 4-wheel drive with the push of a button or a shift of a lever. The actuator allows the front axle to become engaged.
check the 4 whell high actuator
Could be the vacuum actuator, or it could be an electronic fault, if you have an electronically controlled transfer case or an all wheel drive vehicle.
every were
On 93 S10 Blazer. (things to check)(may/may not be similar to 94) -front axle cable (make sure it moves freely) -vacuum actuator (possibly underneath the battery tray, check it holds vacuum) -4 wheel drive switch (on front axle, check the ball valve on it) -4 wheel drive vacuum switch (on transfer case, ball valve and vacuum) Mine turned out to be a bad axle cable, but it is very common for the vacuum actuator to leak vacuum, thus not engaging the system. There may also be a fuse/relay for 4 wheel drive to check.
If the blazer is wheezing, it could be transmission, but if it has 4-wheel drive, check to make sure that the gear is correctly shifted.
It is rear wheel drive, until you shift it into 4 wheel drive.
rear wheel drive or 4x4 capable