Repair 7

The Chevrolet Suburban is a full-size sport utility vehicle manufactured by the Chevrolet division of General Motors. The models made from 2000 to 2006 are specifically known as the GMT800 Suburbans. The 2003 Suburban has an outside mirror on each side of the vehicle. The procedure for replacing the outside mirror is the same for all versions of the GMT800. Some vehicles have electrochromatic mirrors, which contain fluid that can damage the paint on the vehicle.

Instructions

1

Press the mirror in the bottom outside corner of the mirror as you hold the upper inner corner of the mirror. Pull the upper inner corner of the the mirror gently to detach it from its mount.

2

Disconnect the electrical connector from the mirror if your vehicle is equipped with electrochromatic mirrors and remove the mirror from the vehicle.

3

Remove the retaining screws for the mirror motor with a socket wrench. Disconnect the electrical connector from the motor, if your vehicles is equipped with power mirrors. Detach the mirror motor from the vehicle.

4

Install the new mirror motor into the mirror mount if your vehicle has power mirrors. Attach the electrical connector for the motor and fasten the retaining screws for the motor with a socket wrench.

5

Mount the new mirror, and connect the electrical wiring to the mirror, if your vehicle has electrochromatic mirrors. Gently push the mirror down and inward to lock it into place.

A Suburban transmission mount is a block of rubber, bonded between a metal plate on top and a threaded stud centered on the bottom. The mount fits between the transmission tail-shaft and the cross member. It bolts to the two threaded holes under the transmission tail shaft, and to the bracket on the cross member, with a threaded stud. The transmission mount failure occurs when the rubber gets stretched or becomes separated from the top plate or the threaded stud on the bottom. Even when new, some transmission mounts allow for movement and noise.

Instructions

Remove the Transmission Mount

1

Drive the Suburban onto a set of ramps, and apply the emergency brake.

2

Place blocks on the front and rear side of the rear wheels, to prevent the truck from rolling.

3

Go under the vehicle, using a creeper. Place the tools and hydraulic bottle jack within reach.

4

Remove the two mount bolts on the bottom of the transmission tail shaft, as well as the nut from the threaded stud in the cross member. It may be necessary to hold the rubber mount with a pair of lockjaw pliers, while removing the nut from the cross member.

5

Place a bottle jack under the tail of the transmission, and jack it high enough to remove the old transmission mount.

6

Insert the new transmission mount with the threaded stud through the hole in the cross member bracket.

7

Thread the two top bolts into the tail shaft of the transmission, and tighten.

8

Lower the transmission, centered onto the cross member, with the threaded stud through the cross member bracket, and tighten.

9

Remove the blocks from the rear wheels, and back the vehicle off the ramps.

Introduced in 1935, the Chevrolet Suburban is one of the longest-running vehicle models in history. While it has gone through numerous redesigns and adopted countless innovations since its early years, the Suburban remains a popular full-size SUV. The 2003 Chevrolet Suburban came in Suburban 1500 and Suburban 2500 trims. The two-wheel-drive and four-wheel-drive trims of the Suburban 1500 had different alignment specs, while all trims of the Suburban 2500 shared the same alignment specs for 2003.

The 2003 2WD Suburban 1500

The caster angle on the front left wheel should be set at +3.9 degrees, but the caster angle on the front right wheel can range from +1.0 degrees to +4.7 degrees, with a cross tolerance of -0.8 degrees for the left wheel and +0.75 degrees for the right wheel. The camber angle can range from +0.25 degrees to +0.50 degrees on each of the front wheels, with a cross tolerance of zero to +0.5 degrees. The front toe-in can range from +0.1 degrees to +0.2 degrees. The rear end alignment is not adjustable.

The 2003 4WD Suburban 1500

The caster angle on the front left wheel should be set at +3.5 degrees, but the caster angle on the front right wheel can range from +1.0 degrees to +4.5 degrees, with a cross tolerance of -1.0 degrees for the left wheel and +0.50 degrees for the right wheel. The camber angle can range from +0.25 degrees to +0.50 degrees on each of the front wheels, with a cross tolerance of zero to +0.5 degrees. The front toe-in can range from +0.1 degrees to +0.2 degrees. The rear end alignment is not adjustable.

The 2003 2WD and 4WD Suburban 2500s

The caster angle on the front left wheel should be set at +4.5 degrees, but the caster angle on the front right wheel can range from +1.0 degrees to +4.75 degrees, with a cross tolerance of -0.25 degrees for the left wheel and +0.75 degrees for the right wheel. The camber angle can range from +0.25 degrees to +0.50 degrees on each of the front wheels, with a cross tolerance of zero to +0.5 degrees. The front toe-in can range from +0.1 degrees to +0.2 degrees.

Unlike the alignment on all of the 2003 Suburban 1500 trims and most of the 2003 Suburban 2500 trims, the rear end alignment is adjustable on the 2003 Suburban 2500 trims that came with Quadrasteer. On Suburbans with Quadrasteer, the camber angle on the rear end can range from -0.5 degrees to +0.5 degrees and the toe in can range from zero to +0.2 degrees. The caster is not adjustable.