Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
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Hello,Just so I understand ,you are making tight turns on pavement while in four wheel drive? This vehicle is equipped with four wheel drive (not all wheel drive system which has a viscous clutch in the transfer case) and you have a 3 or 4 button controller... correct?
This is perfectly normal. The reason you are experiencing this is that on all wheel drive vehicles there is a viscous clutch in the transfer case that allows the two drive shafts to spin at different speeds as the vehicle is turned sharply at low speeds. You have a manual system. There is no clutch. In other words the front and rear drive shafts are turning at the same speed. When turning sharply at low speeds all four wheels are rotating at different speeds .i.e the rear wheels are turning slower than the front wheels. Especially the inboard rear wheel. When you do this when locked in four wheel drive you are causing the two driveshafts to bind against each other causing the wheel hop and binding you are referring to. This can happen on all wheel drive vehicles as well if the transfer case clutches bind which is almost always repaired with simply a fluid change and possibly a friction modifyer. Your vehicle doesn't have that clutch. The four wheel drive system should simply only be engaged in low traction condtions when wheel slippage can occur and not bind the transfer case.
If you have further questions about this please just ask away :)
If it only does it on dry pavement when in four wheel drive on sharp turns this may sound like a simple answer but the answer is simply don't do that. (smile) The wheels and therefore driveshafts, must turn at different speeds and the driveline you have in your vehicle simply cannot do that. This will cause a severe bind in the driveline and will put excessive stress on the components. The noise you heard was likely the excessive energy stored by the bind in the transfer case releasing. We're talking a 2500 series heavy duty truck which is quite heavy and again... the four wheel drive system should not be engaged on dry pavement. Only when off road or in snow/ice conditions where wheel slippage can occur which will equalize the driveline.
Again.. this is not a problem. The vehicle should be in two wheel drive mode unless off road conditions require four wheel drive. Simply do not engage the four wheel drive system on dry pavement or high traction conditions. There is no need to and it can damage the driveline components.
Where do you live ? in Florida? When there is patchy ice and snow with some dry pavement there can be many times when for saftey sake 4WD is desireable and you will turn on some dry pavement. As I said, oh well.