Question 1

How to Properly Service and Repair the Drive Shaft on GMC Sierra 1500?

Accepted Answer

A valid replacement of the front propeller shaft begins by raising the vehicle while using a flat-bladed tool to extract the clamp at the Transfer Case. Note the proper position of the propeller shaft relative to the front axle pinion yoke before avoiding hammering on the yoke ears or inserting tools into the space between the yoke and Universal Joint since this could fracture the injection joints. Disassemble the front axle pinion yoke by removing its bolts and yoke retainers but protect the bearing cap assemblies from falling off. Support the propeller shaft through front axle pinion yoke removal by applying tape to bearing caps to minimize loss of bearing rollers. Pull the boot off from the Transfer Case output shaft groove before sliding the propeller shaft forward to separate it from the output shaft. The installation process demands inspectors check the output shaft splines for adequate lubrication before applying gm p/n 12345879 (Canadian P/N 10953511) grease or equivalent with gm specification 9985830. The propeller shaft boot should be installed along with its clamping device before sliding the propeller shaft splines into the Transfer Case output shaft. Connect the propeller shaft to the front axle pinion yoke by aligning the reference marks that were used during the removal process. Install yoke retainers with bolts while securing the yoke retainer bolts at 25 nm (18 lb ft). Use the j 43218 to clamp both boot sides after fitting the boot around the Transfer Case output shaft. Then lower the vehicle.

Question 2

How to replace a one-piece Drive Shaft on GMC Canyon?

Accepted Answer

Your first step for replacing the one-piece propeller shaft must include placing the transmission in neutral position and releasing any active park brake controls. First support the vehicle before making references on the Drive Shaft flange to the rear Universal Joint. Start the procedure by untightening and removing the retaining bolts and clamps which enables you to remove the propeller shaft from both the pinion drive flange and transmission/Transfer Case. The u-joint bearing caps need protection from separation so tape or rubber bands should be used for this purpose. When replacing the u-joint first remove tape or rubber band before installing the propeller shaft into the transmission/Transfer Case while matching the pinion reference marks. After installing clamps with retaining bolts you must torque them to 20 nm (15 lb ft) before dropping the vehicle.

Question 3

How to replace the front drive shaft on GMC Yukon?

Accepted Answer

You should begin propeller shaft replacement by first lifting the vehicle and then removing any Transfer Case shield that exists. Vehicle owners should replace the Transfer Case as per bw 4485-nr3 instructions while users of mp 3023/3024-nqh Transfer Case need to perform the required replacement process. The exposed end of the clamp requires prying with a flat-bladed tool in order to remove it at the Transfer Case. Avoid applying force to the yoke ears and never insert a tool between the Universal Joint and yoke to prevent damaging the injection joints. Make a note of how the front propeller shaft interacts with the drive axle flange before you uninstall all bolts and yoke retainers from the front axle pinion yoke. Keep the bearing caps from dropping. The propeller shaft needs to detach from the front axle pinion yoke and tape should be used to secure the bearing caps in their position. First remove the Transfer Case output shaft boot from its groove and then take off the propeller shaft from the output shaft. To complete the removal, unfasten the boot clamp first and then take out the boot. Before installation check the Transfer Case output shaft splines for adequate lubrication then apply gm p/n 12345879 (Canadian P/N 10953511) or an equivalent to the specified gm specification: 9985830. Place the propeller shaft boot alongside the boot clamp before slipping the propeller shaft splines into the Transfer Case output shaft while keeping the relationship marks properly aligned. Next reinstall the front axle pinion yoke propeller shaft while guarding the reference marks created at removal. Fasten Universal Joint retainers and bolts using torque of 25 nm (18 lb ft). The boot requires snapping onto the Transfer Case output shaft until it reaches the groove before crimping the clamps with j-43218 - clamp pliers - narrow jaw. The Transfer Case shield must follow specific installation procedure while inspecting the Transfer Case fluid level before the vehicle is lowered to the ground.

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