GM 25958109
Coupling Shaft

To replace the upper intermediate Steering Shaft, firstly, insert the Steering Column anti-rotation pin (J 42640) into the Steering Column lower access hole. Make sure the wheels of the vehicle are pointed straight forward and the Steering Column is set to lock before unhooking Steering Column or intermediate shaft from steering gear to avoid damage on the sir coil assembly. In order to properly install the bolt and clamp at each end of the upper intermediate shaft and connection of the upper and lower intermediate shafts, mark the relationships between these. Take out the nut and bolt from the lower shaft to upper shaft connection, then nut and bolt from upper shaft to Steering Column connection. Sliding down the intermediate shaft and the connection from the Steering Column and then accelerating the pedal position sensor are removed. Then slide the upper intermediate shaft towards the instrument panel, disengage the lower intermediate shaft and take it out of the vehicle. To install it, insert the lower end of the upper intermediate shaft through the bulkhead to the lower shaft aligning the marks set up it the removal if using the same shaft. Mount the upper end of the upper intermediate shaft to the Steering Column, and affix it with the bolt and nut, tightening the nut to 62 nm (46 ft. Lbs.). Reseal the accelerator pedal position sensor and connect the upper intermediate shaft to the lower intermediate shaft with the bolt and nut, proving the nut at 47 nm (35 ft. Lbs.). Finally, have the Steering Column anti-rotation pin (J 42640) taken out of the Steering Column lower access hole.

Begin replacement of the lower intermediate Steering Shaft when both Steering Column lock is active and front wheels maintain a straight-ahead position to protect the sir coil assembly from damage. Put the Steering Column anti-rotation pin (J 42640) through the lower Steering Column access hole for component alignment reference before proceeding with proper installation. Begin by removing the bolt that connects the upper to lower shafts then unfasten the lower shaft coupler bolt afterwards slide the intermediate shaft assembly forward toward the dash to extract the lower shaft coupler away from the steering gear input shaft. Before attachment install the new intermediate shaft components into the upper shaft and lower shaft coupler following previous recording marks for optimal reinstallation. Place the steering gear worm shaft end of the intermediate shaft coupler before securing both the lower shaft coupler bolt and the upper shaft end bolt. Completely tighten both the upper bolt and the coupler pinch bolt to 47 n.m (35 lb ft) measurements before removing the Steering Column anti-rotation pin (J 42640) through the Steering Column lower access hole.

Initiate replacement of the lower intermediate Steering Shaft by placing front wheels into straight-ahead position while Steering Column remains locked to shield the sir coil assembly from damage. The j 42640 (J 42640) tool must fit through the Steering Column lower access hole so technicians can mark down how the intermediate shaft components line up before installation. Specifically attend to the upper intermediate shaft to lower intermediate shaft and lower shaft coupler to steering gear input shaft relationships. Begin by removing the bolt that joins upper and lower shaft sections as well as the bolt on the lower shaft's coupler after sliding the intermediate shaft assembly toward the dash until the lower shaft's coupler clears the steering gear input shaft and separates from the upper shaft. To install the component insert the intermediate shaft's upper end into the upper shaft while also positioning the lower end of the intermediate shaft coupler. Reinstalling the same shaft requires realigning any initial marks made during disassembly. First secure the lower end of the intermediate shaft coupler to the steering gear worm shaft before bolting the lower shaft coupler and torqueing it to 47 nm (35 ft. Lbs.). In the end step remove the j 42640 (J 42640) from the lower access hole of the Steering Column.

Before replacing the lower intermediate Steering Shaft users must place both front wheels straight and lock the Steering Column in position to protect the sir coil assembly from harm. Insert the Steering Column anti-rotation pin (part number J 42640) through the lower access hole of the Steering Column. Use markings to preserve the correct fitment of intermediate shaft parts as the upper shaft meets the lower shaft and the lower coupler connects to the steering gear input shaft. Start by removing the bolt that links the upper shaft to the lower shaft and the bolt from the lower shaft coupler. Move the intermediate shaft assembly towards the dash until the lower shaft coupler clears the steering gear input shaft for extraction from the upper shaft. To install the intermediate shaft first position the upper end of the shaft into the upper shaft seat and the lower end of the shaft coupler followed by mark alignment when reinstalling the same shaft. Screw the lower end of the intermediate shaft coupler onto the steering gear worm shaft and tighten bolt to 47 nm torque (35 ft. Lbs.) before permanently securing the coupler pinch bolt to 50 nm torque (37 ft. Lbs.). You must first eliminate the Steering Column anti-rotation pin (J 42640) from the entry point of the Steering Column.

Begin replacement of the lower intermediate Steering Shaft when both Steering Column lock is active and front wheels maintain a straight-ahead position to protect the sir coil assembly from damage. Put the Steering Column anti-rotation pin (J 42640) through the lower Steering Column access hole for component alignment reference before proceeding with proper installation. Begin by removing the bolt that connects the upper to lower shafts then unfasten the lower shaft coupler bolt afterwards slide the intermediate shaft assembly forward toward the dash to extract the lower shaft coupler away from the steering gear input shaft. Before attachment install the new intermediate shaft components into the upper shaft and lower shaft coupler following previous recording marks for optimal reinstallation. Place the steering gear worm shaft end of the intermediate shaft coupler before securing both the lower shaft coupler bolt and the upper shaft end bolt. Completely tighten both the upper bolt and the coupler pinch bolt to 47 n.m (35 lb ft) measurements before removing the Steering Column anti-rotation pin (J 42640) through the Steering Column lower access hole.

Before changing the upper intermediate Steering Shaft the vehicle must be positioned with wheels facing straight ahead and the Steering Column in the lock position to protect the sir coil assembly from damage. Drive the Steering Column anti-rotation pin (J 42640) through the lower access opening of the Steering Column. Make clear markings for the bolt-clamp relationships on the upper intermediate shaft's both ends and note the way the upper meets lower intermediate shafts to guide assembly. Unfasten the lower shaft to upper shaft nut before removing the upper shaft to Steering Column bolt. To proceed you should first disassemble the acceleration pedal position sensor from the Steering Column before pulling out and down the intermediate shaft. Move the upper intermediate shaft towards the instrument panel away from the lower intermediate shaft before taking it off the vehicle. Guests need to align the removal marks before inserting the bottom portion of the upper intermediate shaft through the bulkhead into the base shaft. Attach the upper end of the upper intermediate shaft to the Steering Column using bolt and nut. Tighten the nut to 62 nm (46 ft. Lbs.). Reinstall the accelerator pedal sensor while tightening the bolt connecting the upper and lower intermediate shafts to 50 nm (37 foot pounds). The last step requires the removal of Steering Column anti-rotation pin (J 42640) from the lower access hole of the Steering Column.

To remove the upper intermediate Steering Shaft, ensure the vehicle wheels are straight ahead and the Steering Column is in the lock position so that it will not be damaged to the sir coil assembly. Start with putting the Steering Column anti-rotation pin (J 42640) into the lower access hole of the Steering Column. Mark the relationship of upper intermediate Steering Shaft relative to both the Steering Column and the Steering Shaft coupling. Next, pull out the nut and bolt from the upper intermediate Steering Shaft, then pull out the Steering Column seal and finally nut and bolt from the Steering Column. Prise carefully the upper intermediate Steering Shaft out of the engine room. In installation, if the new Steering Shaft coupling is used, transfer the alignment marks from the old parts to the new part to prevent an off-center wheel. Mount the upper intermediate Steering Shaft from the inside of the engine compartment, then install the Steering Shaft coupling nut and bolt at the Steering Column and tighten it to 62 n.m (46lb ft). Next, install the Steering Column seal, the Steering Shaft coupling nut and bolt at the Steering Shaft coupling and tighten to 50 n.m (37 lb ft). Lastly, turn off the anti-rotation pin(J 42640) from the Steering Column lower access hole.

Before beginning lower intermediate Steering Shaft replacement ensure both front wheels face forward and position the Steering Column at lock to defend the sir coil assembly from damage. The Steering Column anti-rotation pin (J 42640) needs installation through the Steering Column's lower access hole. Before handling the 6.6l diesel engine vehicles owners must detach the left charge air cooler hose. Proper installation of intermediate shaft components requires marking their connections between the upper intermediate shaft to lower intermediate shaft and lower shaft coupler to steering gear input shaft. First disassemble the steering components by performing an upper shaft to lower shaft bolt separation followed by loosing the lower shaft coupler bolt then completely remove the intermediate shaft assembly by sliding it towards the dash until it clears the steering gear input shaft. When reinstalling the identical shaft, guide the upper intermediate shaft section inside the upper shaft and the lower intermediate shaft coupler until the marked relationships are readjusted. Hook the intermediate shaft coupler's lower end to the steering gear worm shaft before securing the lower coupler bolt and upper shaft bolt. Finally, torque the upper bolt to 47 nm (35 ft. Lbs.) and the coupler pinch bolt to 50 nm (37 ft. Lbs.). You need to reset the left charge air cooler hose followed by extracting the Steering Column anti-rotation pin (J 42640) from its position in the Steering Column lower access hole for vehicles equipped with the 6.6l diesel engine.

The first step to replace the upper intermediate Steering Shaft starts with installing the Steering Column anti-rotation pin (J 42640) into the Steering Column lower access hole. Ideally measure the bolt-clamp relationships at the upper intermediate shaft's both ends along with its alignment with the lower intermediate shaft to maintain correct integration. Remove first the lower shaft to upper shaft connection nut and bolt followed by the upper shaft to Steering Column connection nut and bolt. Drive the intermediate shaft downward through the Steering Column interface before removing the accelerator pedal position sensor. Pull the upper intermediate shaft towards the instrument panel while it exits the lower intermediate shaft to extract the shaft from the vehicle. When reusing the same upper intermediate shaft during installation replace the bulkhead lower end into the lower shaft and maintain the alignment of the removal marks. Dress the upper end of the upper intermediate shaft on the Steering Column before tightening it with a bolt and nut to 47 n.m (35 lb ft). Secure the connection of the upper intermediate shaft with the bolt and nut to the lower intermediate shaft before reinstalling the accelerator pedal position sensor. Securely tighten the nut to 47 n.m (35 lb ft). Use tools to extract the Steering Column anti-rotation pin (J 42640) through the Steering Column lower access hole.

To replace the upper intermediate Steering Shaft, make sure the wheels of the vehicle are straight and Steering Column is in lock position to prevent damage to the sir coil assembly. Start with the piece of Steering Column anti-rotation pin (J 42640) fitting into the lower access hole of the Steering Column. Mark the relationships between the components such as the bolt and clamp at both ends of the upper intermediate shaft and the relationship between the upper and lower intermediate shafts. After, removing the nut and bolt that fastens the upper part to the lower part on the s shaft, take out the nut and bolt that hold the upper shaft to the Steering Column. Stress down and remove the intermediate shaft from the steering chair and take off the accelerator pedal position sensor. Secondly, shift the upper intermediate shaft towards the instrument panel and pull it away from the lower intermediate shaft, then take it out of the car. For installation, line up the marks done in removal if using the same shaft and install the bottom of the upper intermediate shaft through the bulkhead into the lower shaft. Connect the top end of the upper intermediate shaft to the Steering Column and install the bolt and nut on top end and tighten the nut to 62 nm (46 ft. Lbs.). Proceed and reinstall the accelerator pedal position sensor along with the bolt and nut at the joint of the upper intermediate shaft to the lower intermediate shaft, nut should be snugly fastened to 50 nm (37 ft. Lbs.). Lastly, pull off the Steering Column anti-rotation pin (J 42640) from the lower access hole.

Begin the upper intermediate Steering Shaft replacement operation when both vehicle wheels face forward and the Steering Column sits in locked position to protect the sir coil assembly from damage. Install the Steering Column anti-rotation pin (J 42640) by locating it through the Steering Column lower access hole first. Identify all related points of the intermediate shaft components through marking the upper shaft's double clamp assembly and lower clamp assembly ties to the bolt and the connection junction between the upper and lower shaft sections. Remove first the nut and bolt connecting the lower shaft to upper shaft then proceed to remove the nut and bolt which connects the upper shaft to the Steering Column. Drive the intermediate shaft downward from its Steering Column connection before removing the accelerator pedal position sensor. After sliding the upper intermediate shaft towards the instrument panel you should detach it from the lower intermediate shaft before extracting this component from your automobile. The installation process requires shaft alignment through reuse of existing marks and lower end insertion of upper intermediate shaft into bulkhead and lower shaft. Attach the upper end of the upper intermediate shaft to the Steering Column before you install the bolt and nut at this location and torque the nut to 62 nm (46 ft. Lbs.). Add the accelerator pedal position sensor and retighten the connecting nut between upper and lower intermediate shafts at 47 nm (35 ft. Lbs.). Take out the Steering Column anti-rotation pin (J 42640) through the lower access hole of the Steering Column.

When replacing the lower intermediate Steering Shaft start by positioning the front wheels straight ahead and Steering Column in the lock position to protect the sir coil assembly from damage. Push the Steering Column anti-rotation pin (J 42640) into the lower access hole of the Steering Column. The left charge air cooler hose requires removal on 6.6l diesel engine vehicles. Mark all intermediate shaft component relationships accurately to achieve precise system installation between the upper intermediate shaft and lower intermediate shaft and lower shaft coupler and steering gear input shaft. Start by unscrewing the bolt that joins upper and lower shafts and afterward unscrew the bolt from the lower shaft coupler. Once complete, pull the intermediate shaft assembly towards the dash to remove interference from the steering gear input shaft. Finally move the intermediate shaft downward from the upper shaft. When installing the intermediate shaft start by feeding the upper shaft portion into the upper shaft before directing the lower coupler end onto the steering gear input shaft while recognizing previously marked spots for repeated shaft usage. Fix the lower end of the intermediate shaft coupler to the steering gear worm shaft before bolting the lower shaft coupler at 47 nm (35 ft. Lbs.). Adjust the bolt until it reaches this torque specification. Position the bolt at the upper end of the shaft before securing it to the manufacturer's defined torque rating. Vehicle models with 6.6l diesel engines require removal of the Steering Column anti-rotation pin (J 42640) from below the Steering Column.

A post-collision vehicle inspection requires evaluation of the Steering Column Intermediate Shaft due to its convoluted assembly. Model C1500 contains just a single convoluted area whereas the others feature two of these areas. It is mandatory to check the convoluted areas for damage right after deploying the Air Bags. A straight edge should be applied to different portions of the intermediate shaft to evaluate its straightness during inspection. Any identified bending or damage to the shaft requires replacing it.

Initiate replacement of the lower intermediate Steering Shaft by placing front wheels into straight-ahead position while Steering Column remains locked to shield the sir coil assembly from damage. The j 42640 (J 42640) tool must fit through the Steering Column lower access hole so technicians can mark down how the intermediate shaft components line up before installation. Specifically attend to the upper intermediate shaft to lower intermediate shaft and lower shaft coupler to steering gear input shaft relationships. Begin by removing the bolt that joins upper and lower shaft sections as well as the bolt on the lower shaft's coupler after sliding the intermediate shaft assembly toward the dash until the lower shaft's coupler clears the steering gear input shaft and separates from the upper shaft. To install the component insert the intermediate shaft's upper end into the upper shaft while also positioning the lower end of the intermediate shaft coupler. Reinstalling the same shaft requires realigning any initial marks made during disassembly. First secure the lower end of the intermediate shaft coupler to the steering gear worm shaft before bolting the lower shaft coupler and torqueing it to 47 nm (35 ft. Lbs.). In the end step remove the j 42640 (J 42640) from the lower access hole of the Steering Column.

Begin lower intermediate Steering Shaft replacement by setting front wheels to straight ahead positions while locking the Steering Column to avoid sir coil assembly damage. The Steering Column anti-rotation pin (J 42640) goes into the Steering Column lower access hole and allows you to mark down all necessary intermediate shaft positions before actual installation. Start by disassembling the shaft with initial removal of the upper and lower shaft bolt and then taking away the lower shaft coupler bolt to slide the intermediate shaft assembly towards the dash until the lower shaft coupler clears the steering gear input shaft. First re-fit the lower end of the intermediate shaft into the lower shaft coupler and the upper end of the intermediate shaft into the upper shaft. Maintain the alignment between the noted marks if you plan to use the same shaft. Apply torque of 47 nm (35 ft. Lbs.) through installation of the lower intermediate shaft coupler onto the steering worm shaft followed by tightening the bolt of the lower coupler and upper shaft to 47 nm (35 ft. Lbs.) while securing the pinch bolt to the same torque value. Remove the Steering Column anti-rotation pin (J 42640) from the lower access hole of the Steering Column.

Before beginning lower intermediate Steering Shaft replacement ensure both front wheels face forward and position the Steering Column at lock to defend the sir coil assembly from damage. The Steering Column anti-rotation pin (J 42640) needs installation through the Steering Column's lower access hole. Before handling the 6.6l diesel engine vehicles owners must detach the left charge air cooler hose. Proper installation of intermediate shaft components requires marking their connections between the upper intermediate shaft to lower intermediate shaft and lower shaft coupler to steering gear input shaft. First disassemble the steering components by performing an upper shaft to lower shaft bolt separation followed by loosing the lower shaft coupler bolt then completely remove the intermediate shaft assembly by sliding it towards the dash until it clears the steering gear input shaft. When reinstalling the identical shaft, guide the upper intermediate shaft section inside the upper shaft and the lower intermediate shaft coupler until the marked relationships are readjusted. Hook the intermediate shaft coupler's lower end to the steering gear worm shaft before securing the lower coupler bolt and upper shaft bolt. Finally, torque the upper bolt to 47 nm (35 ft. Lbs.) and the coupler pinch bolt to 50 nm (37 ft. Lbs.). You need to reset the left charge air cooler hose followed by extracting the Steering Column anti-rotation pin (J 42640) from its position in the Steering Column lower access hole for vehicles equipped with the 6.6l diesel engine.

To replace the lower intermediate Steering Shaft, first align the front wheels with the straight ahead position and the Steering Column in the lock position to avoid damaging the sir coil assembly. Stab the Steering Column anti-rotation pin (J 42640) into the Steering Column lower access hole. For vehicles of 6.6l diesel engine, it is necessary to take off the left charge air cooler hose. Mark the relationship between the components of the intermediate shaft for correct installation, the upper intermediate shaft to the lower intermediate shaft, the lower shaft coupler to the steering gear input shaft. Lift and remove the bolt between the two shafts, followed by the bolt of the coupler on the lower shaft and then retreat the intermediate shaft assembly sliding it towards the dash to clear the steering gear input shaft. To install, put the upper end of the intermediate shaft into the upper shaft and the lower end into the intermediate shaft coupler, matching the previously made marks when reinstalling the same shaft. Connect the lower end of the intermediate shaft coupler onto the steering gear worm shaft followed by installation and tightening of the lower shaft coupler and the upper end of the shaft using the bolt on the lower to 47 nm (35 ft. Lbs.) and 50 nm (37 ft. Lbs.) respectively. On the vehicles using a 6.6l diesel motor, reinstall the left charge air cooler hose and, at last, remove the Steering Column anti-rotation pin (J42640) from the car Steering Column lower access slot.

To remove the upper intermediate Steering Shaft, ensure the vehicle wheels are straight ahead and the Steering Column is in the lock position so that it will not be damaged to the sir coil assembly. Start with putting the Steering Column anti-rotation pin (J 42640) into the lower access hole of the Steering Column. Mark the relationship of upper intermediate Steering Shaft relative to both the Steering Column and the Steering Shaft coupling. Next, pull out the nut and bolt from the upper intermediate Steering Shaft, then pull out the Steering Column seal and finally nut and bolt from the Steering Column. Prise carefully the upper intermediate Steering Shaft out of the engine room. In installation, if the new Steering Shaft coupling is used, transfer the alignment marks from the old parts to the new part to prevent an off-center wheel. Mount the upper intermediate Steering Shaft from the inside of the engine compartment, then install the Steering Shaft coupling nut and bolt at the Steering Column and tighten it to 62 n.m (46lb ft). Next, install the Steering Column seal, the Steering Shaft coupling nut and bolt at the Steering Shaft coupling and tighten to 50 n.m (37 lb ft). Lastly, turn off the anti-rotation pin(J 42640) from the Steering Column lower access hole.

To replace the upper intermediate Steering Shaft, install the Steering Column anti-rotation pin (J 42640) in the Steering Column you had first pass through the lower access hole. See that the wheels of the vehicle move straight ahead, and the Steering Column is in the lock position to avoid causing the sir coil assembly to be damaged. Mark the relationships of the bolt and clamp on both ends of the upper intermediate shaft and connection between the upper and lower intermediate shafts for proper installation. Unscrew the nut and bolt from the lower shaft to upper shaft join and the one from the upper shaft to the Steering Column. Extract and remove the accelerator pedal position sensor, and slide the intermediate shaft down and out of the Steering Column connection. After that, slide the upper intermediate shaft towards the instrument panel out of the lower intermediate shaft, and extract out the vehicle. For installation, feed the lower end of your upper intermediate shaft into the lower side through the bulkhead aligning the marks done in its course to bring it out to install the same if reuse the same shaft. Mount the upper end of the upper intermediate shaft to the Steering Column and lock it using the bolt and nut until the nut is tightened to 62 nm (46 ft. Lbs.). Finity the accelerator pedal position sensor and reconnect the upper and lower intermediate shaft as securely as possible with the bolt and nut, tightening the nut achieving 50 nm (37 ft. Lbs.). Finally, pull off the Steering Column anti-rotation pin (J 42640) from the Steering Column lower access hole.