GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Transmission Support Crossmember Replacement

Transmission Support Crossmember Replacement 2WD 1500/2500


Object Number: 1702714 Size: MF

Callout

Component Name

Preliminary Procedures

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Support the transmission with a transmission jack.

1

Transmission Mount to Crossmember Nut (Qty: 2)

Notice: Refer to Fastener Notice in the Preface section.

Tighten
40 N·m (30 lb ft)

2

Transmission Crossmember Nut (Qty: 4)

Tighten
97 N·m (70 lb ft)

3

Transmission Crossmember Bolt (Qty: 4)

Tip

  1. Remove all traces of the original adhesive patch.
  2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.
  3. Apply threadlocker GM P/N 12345493 (Canadian P/N 10953488).

4

Transmission Crossmember

Transmission Support Crossmember Replacement 4WD 1500/2500


Object Number: 1702715 Size: MF

Callout

Component Name

Preliminary Procedures

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Support the transmission with a transmission jack.

1

Transmission Mount to Crossmember Nut (Qty: 2)

Notice: Refer to Fastener Notice in the Preface section.

Tighten
40 N·m (30 lb ft)

2

Transmission Crossmember Nut (Qty: 4)

Tighten
97 N·m (70 lb ft)

3

Transmission Crossmember Bolt (Qty: 4)

Tip

  1. Remove all traces of the original adhesive patch.
  2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.
  3. Apply threadlocker GM P/N 12345493 (Canadian P/N 10953488).

4

Transmission Crossmember

Transmission Support Crossmember Replacement 2WD 2500 HD/3500


Object Number: 1702716 Size: MF

Callout

Component Name

Preliminary Procedures

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Support the transmission with a transmission jack.

1

Transmission Mount to Crossmember Nut (Qty: 2)

Notice: Refer to Fastener Notice in the Preface section.

Tighten
40 N·m (30 lb ft)

2

Transmission Crossmember Nut (Qty: 4)

Tighten
97 N·m (70 lb ft)

3

Transmission Crossmember Bolt (Qty: 4)

Tip

  1. Remove all traces of the original adhesive patch.
  2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.
  3. Apply threadlocker GM P/N 12345493 (Canadian P/N 10953488).

4

Transmission Crossmember

Transmission Support Crossmember Replacement 4WD 2500 HD/3500


Object Number: 1702717 Size: MF

Callout

Component Name

Preliminary Procedures

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Support the transmission with a transmission jack.

1

Transmission Mount to Crossmember Nut (Qty: 2)

Notice: Refer to Fastener Notice in the Preface section.

Tighten
40 N·m (30 lb ft)

2

Transmission Crossmember Nut (Qty: 4)

Tighten
97 N·m (70 lb ft)

3

Transmission Crossmember Bolt (Qty: 4)

Tip

  1. Remove all traces of the original adhesive patch.
  2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.
  3. Apply threadlocker GM P/N 12345493 (Canadian P/N 10953488).

4

Transmission Crossmember