Suspension Unit - GMC G Service Manual

3C-30 FRONT SUSPENSION

SUSPENSION UNIT

The front suspension and frame crossmember can be
removed or installed as a unit if extensive service is
required.
H Rem ove^r^Disconnect (Figures 5 through 13
• Raise the hood and disconnect the battery negative
cable.
• Hoist the vehicle and support it with suitable safety
stands placed at the frame side rails.
1. Wheel and tire assembly.
• Lower the hoist.
2. Front brake hose clip from each upper control arm.
3. Brake hoses from the calipers.
• Clean the area adjacent to the brake hose
fittings.
• Discard the special washers (2 on each hose)
and cover the disconnected ends of each hose
with suitable material.
• Refer to HYDRAULIC FOUNDATION BRAKES
(SEC. 5A2).
4. Tie rod ends from the steering knuckle (31).
• Refer to STEERING LINKAGE (SEC. 3B1).
5. Nuts (38), washers (39 and 41), bolts (43) and clamps
(42) (figure 15).
6. Front stabilizer from the lower control arms (36).
7. Nut (23), washer (22) and bolt (21).
8. Shock absorbers (20) from the lower control arms
(36).
NOTICE: Failure to disconnect the brake line
clips from the suspension unit will result in
severe damage to the brake line when the unit is
lowered from the vehicle.
9. Brake line clip bolts from the front suspension
crossmember.
• On R-Models the clip is located under the right
side engine mount support bracket.
10. Suspension crossmember from the engine mounts.
• Refer to ENGINE (SEC. 6).
11. Suspension crossmember from the frame rail
(figure 34).
• Raise the hoist to support the suspension
crossmember.
• Support the engine.
• This must be done before the suspension unit is
lowered from the vehicle.
12. Upper control arm bracket to the frame side rail nuts
(10), washer (7) and bolts (6).
13. Suspension unit and crossmember from the vehicle.
• L ow er th e s u s p e n s io n u n it and the
crossmember to bring the unit clear of the
vehicle.
R
kist^M^or^Connect (Figures 5 through 13 and
NOTICE: For steps 4, 6, 10 and 12, see " Notice"
on page 3C-1 of this section.
1. Suspension unit and crossmember and raise it with
the hoist to align the suspension crossmember and
frame holes.
2. Suspension crossmember to frame rail bolts
(figure 34).
3. Upper control arm (28) and frame bracket bolts (6).
4. Washers (7) and nuts (10).