Frame and Underbody Chevrolet Chevy Express G1500

Fastener Tightening Specifications

Fastener Tightening Specifications

Removal Procedure

1. Raise the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/chevy-express-g1500/1996-2012/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Support the transmission with a safety stand.
3. Remove the brake combination valve to transmission support mounting bolt.
4. Remove the fuel filter bracket to transmission support retaining bolts.
5. Remove the transmission mount to the transmission support retaining nut, for RWD vehicles.
6. Remove the transmission mount to the transmission support retaining nuts, for 4WD vehicles.
7. Remove the transmission support to the frame mounting bolts.
8. Remove the transmission support from the vehicle.

Installation Procedure

1. Install the transmission support to the vehicle.
2. Install the transmission support to the frame mounting bolts. Tighten: Tighten the bolts to 50 N.m (66 lb ft), except Cutaway. Tighten the bolts to 65 N.m (48 lb ft), Cutaway.
3. Install the transmission mount to the transmission support retaining nuts, for 4WD vehicles. Tighten: Tighten the nuts to 60 N.m (44 lb ft).
4. Install the transmission mount to the transmission support retaining nut, for RWD vehicles. Tighten: Tighten the nut to 60 N.m (44 lb ft).
5. Install the fuel filter bracket to transmission support retaining bolts. Tighten: Tighten the bolts to 30 N.m (22 lb ft).
6. Install the brake combination valve to transmission support mounting bolt. Tighten: Tighten the bolt to 10 N.m (89 lb in).
7. Remove the safety stands.
8. Lower the vehicle.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/chevy-express-g1500/1996-2012/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the engine mount to engine mount bracket bolts.
3. Using a jack on the square tab at the rear of the engine block and raise the engine, left side shown.
4. Remove the engine mount bracket mounting nuts.
5. Remove the engine mount bracket from the vehicle.

1. Install the engine mount bracket to the vehicle.
2. Install the engine mount bracket retaining nuts. Tighten: Tighten the nuts to 45 N.m (33 lb ft).
3. Lower the engine.
4. Install the engine mount to engine mount bracket bolts. Tighten: Tighten the bolts to 60 N.m (44 lb ft).
5. Lower the vehicle.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/chevy-express-g1500/1996-2012/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the engine mount to engine mount bracket bolts.
3. Using a jack on the square tab at the rear of the engine block and raise the engine, left side shown.
4. Remove the engine mount bracket mounting nuts.
5. Remove the engine mount bracket from the vehicle.

1. Install the engine mount bracket to the vehicle.
2. Install the engine mount bracket retaining nuts. Tighten: Tighten the nuts to 45 N.m (33 lb ft).
3. Lower the engine.
4. Install the engine mount to the engine mount bracket bolts. Tighten: Tighten the bolts to 60 N.m (44 lb ft).
5. Lower the vehicle.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/chevy-express-g1500/1996-2012/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Disconnect the electrical wiring harness connectors from the engine crossmember.
3. Remove the engine crossmember mounting bolts.
4. Remove the engine crossmember.

1. Install the engine crossmember.
2. Install the engine crossmember mounting bolts. Tighten: Tighten the bolts to 120 N.m (89 lb ft).
3. Connect the electrical wiring harness connectors to the engine crossmember.
4. Lower the vehicle.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/chevy-express-g1500/1996-2012/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Support lower control arms with safety stands.
3. Unload the torsion bars. Refer to «Torsion Bar and Support Assembly Replacement»(/chevrolet/chevy-express-g1500/1996-2012/remont/suspension-front/#front-suspension-system) in Front Suspension.
4. Remove the right side differential carrier lower mounting bracket bolt and nut.
5. Remove the left side differential carrier lower mounting bracket bolt.
6. Remove the engine crossmember bolt from the left lower control arm bracket.
7. Remove the engine crossmember lower mounting bolts and nuts.
8. Remove the engine crossmember upper mounting bolts.
9. Disconnect the electrical wiring harness connectors from the engine crossmember.
10. Remove the lower control arm nuts and washers.
11. Remove the lower control arm bolts until bolts are flush with the frame.
12. Remove the engine crossmember.

Scheme 1

1. Install the engine crossmember.
2. Install the lower control arm bolts to the through the engine crossmember and frame.
3. Install the lower control arm nuts and washers. Tighten: Tighten the nuts to 145 N.m (107 lb ft).
4. Connect the electrical wiring harness connectors to the engine crossmember.
5. Install the engine crossmember upper mounting bolts. Do not tighten.
6. Install the engine crossmember lower mounting bolts and nuts. Tighten: Tighten the upper and lower engine crossmember bolts to 65 N.m (48 lb ft).
7. Install the engine crossmember bolt to the left side lower control arm bracket. Tighten: Tighten the bolt to 25 N.m (18 lb ft).
8. Install the left side differential carrier lower mounting bracket bolt. Tighten: Tighten the bolt to 85 N.m (63 lb ft).
9. Install the right side differential carrier lower mounting bracket bolt and nut. Tighten: Tighten the bolt to 85 N.m (63 lb ft).
10. Load the torsion bars. Refer to «Torsion Bar and Support Assembly Replacement»(/chevrolet/chevy-express-g1500/1996-2012/remont/suspension-front/#front-suspension-system) in Front Suspension.
11. Remove the supports from the lower control arms.
12. Lower the vehicle.

1. Remove the screws retaining the fuel filter pipe to the body.
2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/chevy-express-g1500/1996-2012/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
3. Use jack stands in order to support the body of the vehicle.
4. Release the brake line retainers closest to the first body mount (2) in order to ensure that the brake lines will not bend when you lower the frame.
5. Loosen all the body mount bolts (5). Do not remove the bolts.
6. Remove the bolt (5) from the body mount.
7. Lower the frame slightly.
8. Remove the body mount from the frame.

1. Install the body mount (2) to the frame.
2. Raise the frame.
3. Install the bolt (5) to the body mount.
4. Install the body mount bolts (5). Tighten: Tighten the body mount bolts to 140 N.m (103 lb ft).
5. Install the brake line retainers.
6. Remove the safety stands.
7. Lower the vehicle.
8. Install the screws retaining the fuel filler pipe to the body.

1. Remove the hitch to frame mounting bolts and the nuts.
2. Remove the hitch from the vehicle.

1. Install the hitch to the vehicle.
2. Install the hitch to frame mounting nuts and the bolts. Tighten: Tighten the nuts to 88 N.m (65 lb ft).

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/chevy-express-g1500/1996-2012/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the tie down bracket to the frame mounting bolts, left side only.
3. Remove the tie down bracket from the frame.

1. Install the tie down bracket to the frame.
2. Install the tie down bracket to the frame mounting bolts. Tighten: Tighten the bolts to 30 N.m (22 lb ft).
3. Lower the vehicle.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/chevy-express-g1500/1996-2012/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the tow hooks to the frame mounting nuts.
3. Remove the tow hook from the frame.
4. Remove the tow hook bolts from the frame.

1. Install the tie down bracket bolts to the frame.
2. Install the tie down bracket to the frame.
3. Install the tie down bracket to the frame mounting nuts. Tighten: Tighten the nuts to 88 N.m (65 lb ft).
4. Lower the vehicle.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/chevy-express-g1500/1996-2012/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the engine protection shield mounting bolts, light duty shown, heavy duty similar.
3. Remove the engine protection shield.

1. Install the engine protection shield.
2. Install the engine protection shield mounting bolts, light duty shown, heavy duty similar. Tighten: Tighten the bolts to 20 N.m (15 lb ft).
3. Lower the vehicle.

See also:
• Lifting and Jacking the Vehicle
• Fastener Notice
• Engine Mounting Notice
• Torsion Bar and Support Assembly Replacement