Front Subframe: Service and Repair

Frame Replacement

Tools Required
J 39580 Universal Engine Support Table
Removal Procedure

1.Install the engine support fixture to support the engine/transaxle assembly. Refer to Engine Support Fixture for the 3.5L engine, Engine Support Fixture for the 3.9L engine, Engine Support Fixture for the 5.3L engine.

2.Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

3.Remove the front tires and wheels. Refer to Tire and Wheel Removal and Installation .

4.Remove the lower radiator air deflector. Refer to Radiator Air Lower Baffle and Deflector Replacement .

5.Remove the positive battery cable retainers. Position the positive battery cable aside. Refer to Battery Positive and Negative Cable Replacement .

6.Disconnect the power steering cooler pipe from the frame. Refer to Power Steering Cooler Pipe/Hose Replacement .

7.Secure the power steering cooler to the exhaust pipe.

8.Remove the stabilizer shaft links. Rotate the stabilizer shaft up to gain access to the mounting bolts for the power steering gear. Refer to Stabilizer Shaft Link Replacement .

9.Remove the mounting bolts for the power steering gear. Refer to Steering Gear Replacement .





1.Secure the power steering gear.

2.Remove the nuts which secure the engine mount to the frame. Refer to Engine Mount Replacement for the 3.5L engine, Engine Mount Replacement for the 3.9L engine, Engine Mount Replacement - Left Side and Engine Mount Bracket Replacement - Left Side for the 5.3L engine.

3.Remove the nuts which secure the transaxle mount to the frame. Refer to Transmission Mount Replacement - Left Side for the 4T65-E transaxle.





1.Disconnect both front wheel speed sensor connectors (1), if equipped.

2.Remove both front wheel speed harness retainers (2) from the frame and the lower control arms, if equipped.

3.Separate both of the lower ball joints from the steering knuckle. Refer to Lower Control Arm Ball Joint Replacement .





1.Lower the vehicle until the frame contacts J 39580 .





1.Remove the frame reinforcement nuts (3).

2.Remove the frame reinforcement bolts (1).

3.Remove the frame reinforcements (2).





1.Remove the bolts (1) which secure the frame to the body.

2.Raise the vehicle in order to separate the frame from the body.

3.If you are replacing the frame, remove the following components:

-Both of the lower control arms - Refer to Lower Control Arm Replacement .

-The stabilizer shaft - Refer to Stabilizer Shaft Replacement .

-The spacers, the upper insulator, the lower insulator, and the retainers - Refer to Drivetrain and Front Suspension Frame Front Insulator Replacement Service and Repair and to Drivetrain and Front Suspension Frame Rear Insulator Replacement Drivetrain and Front Suspension Frame Rear Insulator Replacement .

Installation Procedure





1.If you are replacing the frame, install the following components:

-Both of the lower control arms - Refer to Lower Control Arm Replacement .

-The stabilizer shaft - Refer to Stabilizer Shaft Replacement .

-The spacers, the upper insulator, the lower insulator, and the retainers - Refer to Drivetrain and Front Suspension Frame Front Insulator Replacement Service and Repair and to Drivetrain and Front Suspension Frame Rear Insulator Replacement Drivetrain and Front Suspension Frame Rear Insulator Replacement .





1.Position the engine support table with the frame under the vehicle.

2.Lower the vehicle to the frame.





1.Loosely install the bolts (1) to secure the frame to the body.

Notice:Refer to Fastener Notice .

2.Align the frame to the body by inserting two 19X203 mm (0.74X8.0 in) pins in the alignment holes (2) on the right side of the frame.

Tighten
-Tighten the new front frame bolts to 145 N �m (107 lb ft).

-Tighten the new rear frame bolts to 160 N �m (118 lb ft).





1.Install the frame reinforcements (2).

2.Install the frame reinforcement bolts (1).

TightenTighten the bolts to 20 N �m (15 lb ft).

3.Install the frame reinforcement nuts (3).

TightenTighten the nuts to 20 N �m (15 lb ft).

1.Connect both the lower ball joints to the steering knuckle. Refer to Lower Control Arm Ball Joint Replacement .

2.Install the nuts which secure the engine mount to the frame. Refer to Engine Mount Replacement for the 3.5L engine, Engine Mount Replacement for the 3.9L engine, Engine Mount Replacement - Left Side and Engine Mount Bracket Replacement - Left Side for the 5.3L engine.

3.Install the nuts which secure the transaxle mount to the frame. Refer to Transmission Mount Replacement - Left Side for the 4T65-E transaxle.

4.Remove the power steering gear from the exhaust pipe. Position to the frame.

5.Install the steering gear mounting bolts. Refer to Steering Gear Replacement .

6.Install the stabilizer shaft links. Refer to Stabilizer Shaft Link Replacement .





1.Connect both front wheel speed sensor connectors (1), if equipped.

2.Install both front wheel speed harness retainers (2) to the frame and to the lower control arm, if equipped.

3.Install the positive battery cable. Refer to Battery Positive and Negative Cable Replacement .

4.Install the power steering cooler pipe. Refer to Power Steering Cooler Pipe/Hose Replacement .

5.Install the radiator lower air deflector. Refer to Radiator Air Lower Baffle and Deflector Replacement .

6.Install the front tires and wheels. Refer to Tire and Wheel Removal and Installation .

7.Lower the vehicle.

8.Remove the engine support fixture. Refer to Engine Support Fixture for the 3.5L engine, Engine Support Fixture for the 3.9L engine, Engine Support Fixture for the 5.3L engine.

9.Inspect the front wheel alignment. Refer to Wheel Alignment Measurement .