4x4 problems i have a 2003 gmc 1500hd and it goes into four wheel drive but when im in mud or snow the back tires spin like they should but the front wheels shake like something is slipping. they hardly spin at all. im not sure if it is in the transfer case maybe. thanks
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No, even a 4x4 will have only 1 wheel that will spin on each axle in this instance. It's called a floating differential. For stock vehicles with non locking differentials like you have, both cannot spin or have full power at the same time. Hard to explain on this, but picture your car making a hard right turn. Both front wheels would be spinning at different speeds because of the turn. The passenger side tire is spinning much slower than the drivers side tire, therefore if both were spinning at the same time, your tires would chirp and skip on the pavement which would eventually ruin your differential. In offroad applications, we WANT the differentials locked and turning at the same time with true 4x4. But in normal everyday vehicles, even standard stock 4x4's, only 1 tire will do the spinning per axle unless it has possitraction or full locked axle. Clear as snow?
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.
Hi Correia, Having four wheel drive built onto a vehicle gives traction through all four wheels, meaning that if one of the four wheels looses traction all the driving motion is directed through that spinning wheel. When driving on snow, ice or mud, gently does it all the time! Gentle acceleration and slow down using gentle gear changes. Use the brakes as little as possible. Remember if you lock up the brakes and the vehicle begins to slide you'll have no control at all! Traction control is entirely different than four wheel drive. Traction control will control any wheel which begins to slip and thereby keep you in control. Regards Johngee10
Alot of people are having this problem. A locked 4x4 while turning on a dry or wet surface will do this, unless it is snow or mud which allow the wheels to slip the front wheels bind and buck,clunk. Now if this is not the case then check the CV joints, jack front wheels off ground, one at a time is fine, grab wheel and wiggle all around and see if tire feels loose as it might be a bad wheel bearing hub also. I don't believe there is anything wrong with the ,transfercase. I have owned 4x4s for 31 yrs ranging from 1967 - 2003, mostly chevy (gmc) ford, and 1 dodge ram. 9 out of 10 times it is front hubs,pinion,front driveshaft. Transfercases either work or they don't,and if they don't its because it's broke and your not driving.
Me, I lock 'em before it snows the first time and unlock 'em after the last snow. If I think I might spin I get out and lock them before I drive into something sloppy. It's a lot of fun watching a guy with his arm up to the elbow in mud trying to lock his hubs..
Manual locking hubs seem like a pain at first, but when you're pulling someone out of a big ol' snowdrift because their fancy hubs are broke again you'll realize that how your truck is is how it should be.
The front differential/drive train have no way to slip in four wheel drive. When you make a tight turn the the front wheels travel a different distance than the rear wheels. on snow, ice, mud, or other off road conditions this isn't a problem because there is less friction for the tires and they just slip a little without much indication they are doing so. On dry pavement they cannot slip and cause the front drive train to bind up and eventually hop.
By the way that is not very good for the 4X4 drive train in general so unless you driving a straight line on dry pavement I wouldn't recommend using the 4x4.
In two wheel drive the front drive drain can move independent of the rear drive train so tight turns are not a problem.
If you have a CJ or Cherokee, when you move the 4x4 lever, it engages the transfer case which then transmits power to the front as well as the rear wheels. For most (99%) of all four wheel use, you use the front position on the shifter one notch behind the two wheel drive setting. Use 4 low only for pulling vehicles out of mud etc and don't drive in that range. If it sticks in 4wd after disengaging it, usually backing up about twenty feet will help. If you have a Grand Cherokee, the 4x4 usually is a quadratrack unit. That one stays engaged but only goes into 4wd mode when the rear wheels begin to slip. (by itself). Rules for using low are the same. It is very important to run the exact same size and style tires on any 4x4. It is mandatory on quadratrack units. Use of odd sized tires can cause driveline damage. There are variations on different year vehicles but the basics remain the same.
GOOD MORN SNOWED 18 INCHES ENGAGED FOUR WHEEL DRIVE IN BOTH HIGH AND LOW, FRONT LEFT WHEEL NOT PULLING RIGHT FRONT DID PULL. RODE AROUND FOR A WHILE. WHILE PARKING THE TRUCK IN MY DRIVEWAY THE FRONT RIGHT STOPPED PULLING IM STUCK IN SNOW NOW. TEN MINUTES BEFORE RIGHT WHEEL STOPPED PULLING THE DFROSTER BLOWER MOTOR STOPPED BLOWING ANY IDEAS