A/T - Dash or Steering Wheel Shake at Idle

Bulletin No. T 83-48
File In Group 6A
Number 34
Date Mar. '83
1982 CIMARRON IDLE SHAKE

Some 1982 Cimarrons equipped with automatic transmissions may exhibit dash or steering wheel shake at idle. A new transaxle mount (P/N 14067053) is now available through GMWDD which will reduce idle shake on vehicles exhibiting this condition.

SERVICE PROCEDURE:

Transaxle Mount Removal

1. Disconnect negative battery cable.

FIGURE 1 - Alignment Bolt Position:

2. Insert a 1/4" x 2" (M6X1X65) bolt in hole at front R.H. engine mount to prevent mount mislocation during transaxle mount removal (refer to Figure 1).
3. Install engine support fixture (refer to page 7A-13 of the 1982 Cimarron Service Manual). Apply a preload on lift hook so that engine will not drop when mount bolt is removed.

FIGURE 2 - Removing Transaxle Mount:

4. Remove three lower bracket to transaxle mount bolts (refer to Figure 2).

FIGURE 3:

5. Loosen forward-most transaxle mounting strut bolt (refer to Figure 3).

FIGURE 4:

6. Loosen two R.H. rear engine mount retaining nuts (refer to Figure 4).
NOTICE: It is extremely important that Steps 5 and 6 be performed to prevent unwanted preload to the new mount as well as to the support strut during installation.

FIGURE 2 - Removing Transaxle Mount:

7. Lower vehicle and remove upper bracket to transaxle mount bolt (refer to Figure 2).

8. Remove two transaxle mount to body bolts (refer to Figure 2), then remove mount.
Service Mount Installation and Alignment

1. Install new transaxle mount and snug, do not torque, the two mount to body bolts.

2. Using support fixture, adjust engine height so that mount bracket lightly contacts transaxle mount.

NOTICE: Do not lift the engine into place by tightening the attaching bolts, as this may create undesirable loads on the mount.

3. Raise vehicle, install three lower bracket to mount bolts and torque to 52 N-m (38 ft.lbs.).

4. Lower vehicle and install the upper bracket to mount bolt and torque to 52 N-m (38 ft.lbs.).

5. Remove engine support fixture.

FIGURE 5:

6. With transaxle in neutral, observe the transaxle mount end gaps (refer to Figure 5). If end gaps are not equal front to rear, it will be necessary to insert a pry bar into the narrower of the two gaps and pry fore or aft. At the same time, torque the mount to body bolts to 61 N-m (45 ft.lbs.). Verify that end gaps are equal. If not, repeat Step 6.

NOTICE: Use a blunt blade pry bar when prying mount, as not to tear rubber.
7. Raise vehicle and tighten two R.H. rear engine mount nuts to 24 N-m (18 ft.lbs.).

8. Tighten transaxle mount strut to 68 N-m (50 ft.lbs.).

9. Remove locating bolt from R.H. front engine mount.

10. Reconnect negative battery cable.

11. With engine at normal operating temperature, emergency brake applied and drive wheels blocked, all accessories on and transmission in drive. Visually inspect the forward-most transaxle mount end gap. For optimal idle shake isolation, there must be a slight end gap remaining. If no gap exists, realignment may be necessary.

For warranty purposes, use Operation Number K6073 at .8 hour.