GM 15148807
Transmission Support

A 4WD vehicle requires a method for raising and supporting it during front engine crossmember replacement. Begin by pulling out both the differential carrier shield and crossmember frame bolts and afterward extract the crossmember from the vehicle. Follow these steps during installation: put the crossmember back into position on the vehicle as you re-install the framing bolts with a 120 N.m (88 lb ft) torque value. Reinstallation of the differential carrier shield must follow while performing the vehicle descent.

Firstly, elevate and support the vehicle in the right way to change the transmission support on a 4wd vehicle. Hold the transmission to use a transmission jack and disconnect the transmission wiring harness from the transmission support if necessary. Unbolt the transmission mount to the transmission support stud nuts, and if required, remove the catalytic converter hanger bracket from the transmission support. After that, take the nuts and bolts, as well as the transmission support from the frame to the pickups and utilities, with bravada and zr 2 models also infested by this pest, before the transmission support itself can be removed. For installation, start by locating the transmission support and to adhere to the fastener notice in service precautions. Mount the transmission support to the nuts and bolts for the frame for the zr2s, where they tighten at 54 n.m (40 lb ft), then replicate this for the bravadas and pickups and utilities, in which they tighten at 54 n.m (40 lb ft). Reattach it to the transmission support, mounting bolts with 17 n.m (13 lb ft). If applicable. Next, install the transmission mount to the transmission support nuts and tighten it up to 57 n.m (42 lb ft), if any transmission wiring harness had been disconnected, you would need to reconnect it at this time. Finally lift of the transmission jack and let the vehicle down.

A 4wd vehicle transmission support replacement starts with proper vehicle support and lifting. The first step should be to support the transmission with a transmission jack before disconnecting the transmission wiring harness from the transmission support when needed. The first step is to remove both transmission support stud nuts that connect the mount to the transmission. Along with this, professionals should detach the bracket holding the catalytic converter from the support if present. Start by taking out both transmission support frame nuts and bolts for all vehicles including pickups and utilities and the bravada and zr2 models before extracting the transmission support. The first step for installation involves returning the transmission support to its original position. When reinstalling the transmission support to the frame nuts for zr2, bravada and pickups and utilities maintain a torque of 54 n.m (40 lb ft). Fasten the catalytic converter hanger bracket to the transmission support while tightening its bolts to 17 n.m (13 lb ft). Let the transmission mount return to the transmission support stud nuts before tightening these fasteners to 45 n.m (33 lb ft). Lower the vehicle after reattaching the disconnected transmission wiring harness to the transmission support and removing the transmission jack.