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I got 95 4x4 silverado clunck sound when going in reverse start back up n it just binds up n won't move then it oops n goes into gear what will cause thisI got 95 4x4 silverado clunck sound when going in reverse start back up n it just binds up n won't move then it oops n goes into gear what will cause this
I figured out it's not my 4wheel drive just didn't have it in all the way I've already replaced rear drive shaft I joints now trying to do the front drive I jointsI figured out it's not my 4wheel drive just didn't have it in all the way I've already replaced rear drive shaft I joints now trying to do the front drive I joints
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Sounds like your pinion/bendix gear is not reliably extending fully to engage the flywheel. There are three common causes of this: (most common) Dried up grease or dirt on the threads of the starter shaft and the pinion/bendix. Failing overrunning/one-way clutch in the bendix
replace starter.
independent 4x4 manages each wheel in turn applying power to the wheel with the most resistance and less power to wheels that have low road resistance, manual 4x4 has power to the differencials of the front and rear axals even if one wheel of each axal has no traction with a dif lock in place the wheels will keep turning. it can be that when a 4x4 is disengaged that the diferencial is no longer locked, then if one wheel has no traction the vehicle will stop moving and the power will got out through the wheel with least resistance and cause it to spin. also some vehicles have a limited slip differentical that has a small clutch plate build in the ensure that wheel spin is reduced.
I believe that is standard for a stock 4X4, If you have true posi 4X4 all 4 wheels will turn at the same time in your case when the 2 spinning wheels spin under load the other 2 kick in
hope that helps you
Rob
Lock in your 4 wheel drive, and get under the truck, and try to manually turn the front drive-shaft. If the drive-shaft spins freely, then your 4x4 is not locking in correctly, and you may need to replace the lockers. Good luck!
The Selectable Four Wheel Drive (S4WD) Front Axle consist of the following components:
• Differential Carrier Housing
• Differential Case Assembly
• Inner Axle Shaft
• Intermediate Shaft Bearing Assembly (located on the right side of the oil pan)
• Electric Motor Actuator
The front axle on Selectable Four Wheel Drive (S4WD) model vehicles uses a disconnect feature mounted on the right side of the oil pan in order to engage and disengage the front axle. When the driver engages the 4WD system, the Transfer Case Control Module sends a signal to the electric motor actuator to energize and extend the plunger inside. The extended plunger moves the clutch fork and clutch fork sleeve across from the clutch fork outer gear that is splined to the right side wheel drive shaft to the clutch fork inner gear that is splined to the inner axle shaft. The locking of the two gears allows the axle to operate in the same manner as a semi-floating rear axle. A propeller shaft connects the transfer case to the front axle. The differential carrier assembly uses a conventional ring and pinion gear set to transmit the driving force of the engine to the wheels. The open differential allows the wheels to turn at different rates of speed while the axle continues to transmit the driving force. This prevents tire scuffing when going around corners and premature wear on internal axle parts. The ring and pinion set and the differential are contained within the carrier. The axle identification number is located on top of the differential carrier assembly or on a label on the bottom of the right half of differential carrier assembly. The wheel drive shafts are completely flexible assemblies consisting of inner and outer constant velocity CV joints protected by thermoplastic boots and connected by a wheel drive shaft.
shift into 4wd and move truck a couple of feet.
if light is still off, park truck block the wheels set the park brake jack right front wheel and try to hand spin the wheel if wheel doesn't turn 4x4 is functioning properly but there is a wiring problem use an ohmmeter to check the 4x4 switch wiring fuse and bulb
if wheel turns freely the front axle or transfer case is not engaged
attempt to hand spin the front driveshft if the driveshaft will spin the transfer case is not engaged check the transfer case shift linkage, problem is in linkage or transfer case internals
if the driveshaft will not spin the transfer case is engaged properly
with trnsmission in neutral or park start engine measure vacuum on the two vac lines at front axle shift motor . one line should have approx 20" vacuum. other line should have none
if no vacuum measured look for vac leak or bad vac switch
if both lines have vac look for a bad vac swithc or ruptured cad actuator diaphragm
if one line has 20" +- VAC
move transfer case lever to 2wd measure vac again lines should have swapped vac signals
if no vac switch bad or 4wd shift likage needs adjusting
if yes vac motor bad or stuck or shift fork stuck
remove vac shift motor from the axle attach vac lines to shift motor engage disengage 4wd
does shift motor plunger move at least 1/2 inch
no shift motor bad
yes check axle shift fork and vac motor for binging
I got 95 4x4 silverado clunck sound when going in reverse start back up n it just binds up n won't move then it oops n goes into gear what will cause this
Pops not oops
I figured out it's not my 4wheel drive just didn't have it in all the way I've already replaced rear drive shaft I joints now trying to do the front drive I joints
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