facing in front of engine compartment with hood up and locked, you will find it on the left wheel well directly behind battery. 2 black vacumn hoses exit out rear of modulator. i imagine your installing extension hoses because of body lift kit. i found there instructions to be lacking quality photos or diagrams.
Never heard of a "front wheel modulator" on a S-10 Blazer. If you mean hub, it is the wheel bearing assembly. If you meant 4x4 shift solenoid then depends if it is shift on the fly or not. The ABS has a modulator, but not sure what you mean.
It is run on a vacuum system. Usually it is because there is not enough vacuum available to do it. Try tuning your defroster off, and rev the engine just a little. If it wont work, you probably have a vacuum leak
No
On a Dodge Ram, it runs from the intake manifold, to the switch on the transfer case, to the front axle shift actuator.
Electric Shift FE = Four Wheel Drive / Electric Shift FM = Four Wheel Drive / Manual Shift TE = Two Wheel Drive / Electric Shift TM = Two Wheel Drive / Manual Shift http://hondaparts-cheapcycleparts.com/oemparts/#/c/honda_atv_2011/parts
Underneath the the plastic cover on the front differential.
can not get 4 wheel drive to shift in 1998 Tahoe
Shift the 4 wheel drive lever into 4 wheel drive.
I have replaced the vacuum diaphragm for the 4 wheel drive. Now the 4 wheel drive works intermittenly. Why? I have replaced the vacuum diaphragm for the 4 wheel drive. Now the 4 wheel drive works intermittenly. Why?
It is rear wheel drive, until you shift it into 4 wheel drive.
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.
Grizzly four wheeler will not shift to four wheel drive model 600