GM 25900714
Steering Shaft, Lower

Sanitizing the SIR system is the first step before replacing a tilt column shaft. Begin by removing the tilt spring before getting to the linear shift assembly if needed in addition to the electrical brake transmission shift interlock (BTSI) actuator. First, uninstall the turn signal cancel cam assembly, ignition switch and lock housing and upper intermediate steering shaft from the assembly. Use the Pivot Pin Remover (J 21854-01) to remove pivot pins after lowering the lower shaft bearing assembly from the system. When ready to detach the assembly, pull the tilt arm to free the lock shoes from steering column support dowel pins. Next move on to removing the steering shaft assembly. When installing start with the steering shaft assembly inside the steering column housing before adding the steering column housing assembly. First activate the tilt lever to guide the lock shoes onto the dowel pins then rotate the assembly to find proper pivot pin alignment. Apply GM P/N 12346293 (Canadian P/N 992723) lubricant to new pivot pins and press them into position until they become firmly embedded before staking them at three new points. The installation process requires the replacement of lower shaft bearing assembly followed by upper intermediate steering shaft and ignition switch and lock housing. Before completion attach the linear shift assembly, turn signal cam assembly and finally put in the tilt spring while enabling SIR functionality.

To change a steering shaft on a tilt column, first detach the steering column tilt head housing. Then remove the steering column shaft. To install, start by fitting the new steering column shaft and then the steering column tilt head housing.

If you are replacing the steering column shaft for a tilt column, first you must disable the sir system. When you need to perform the job, take off the tilt spring and in case you need to, the linear shift assembly and the electrical btsi actuator. Next, remove the Ignition Switch and lock housing, then the upper intermediate Steering Shaft and the lower shaft bearing assembly. Remove the pivot pins using the pivot pin remover (J 21854-01). Pull the tilt arm to release the steering wheel protection shoes from the dowel pins in the steering column support assembly, afterward take out the steering column housing assembly. After that, remove the Steering Shaft assembly. Thereafter and for installation, place the Steering Shaft assembly into the steering column housing and install the steering column housing assembly. In positioning the lock shoes to the dowel pins, use the tilt lever followed by rotating the tilt head assembly to align the holes for the pivot pins. Apply lubrication to the new pivot pins with gm p/n 12346293 (Canadian P/N 992723) and press it in far enough to firmly seat it, staking it in at 3 new places. Finally, put on the lower shaft bearing assembly, upper intermediate Steering Shaft, Ignition Switch and lock housing, linear shift assembly if applicable, and the tilt spring and enable sir system.

Begin all tilt column steering shaft replacement work by removing the steering column tilt head housing. Once you've removed the steering column shaft from the vehicle. The first step should be installing the steering column shaft before moving onto the steering column tilt head housing.

Place the steering shaft assembly into the steering column support assembly.

Ensure the plastic insert flat aligns with the flat on the lower intermediate shaft when reinstalling the upper intermediate shaft pinch bolt.

The Steering Column Lock Pin (J 42640).

Install the steering column tilt head housing.

Begin by placing the steering shaft assembly into the steering column support assembly.