Chevrolet Silverado / GMC Sierra. Service manual — part 2025

Fig. 452: View Of Lower Transmission Stud
Courtesy of GENERAL MOTORS CORP.

8. For vehicles with a 6L80-E automatic transmission, position the oil cooler bracket and

install the lower right transmission stud until snug.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 453: View Of Lower Transmission Bolt
Courtesy of GENERAL MOTORS CORP.

9. For vehicles with a 6L80-E automatic transmission, install the lower left transmission bolt

until snug.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 454: View Of Lower Transmission Bolts
Courtesy of GENERAL MOTORS CORP.

10. For vehicles with a 4L80-E automatic transmission, install the 2 lower transmission bolts

until snug.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 455: View Of Lower Transmission Bolts
Courtesy of GENERAL MOTORS CORP.

11. For vehicles with a 4L60-E/4L70-E automatic transmission, install the 2 lower transmission

bolts until snug.

Tighten:

1. Tighten the oil pan and oil pan-to-oil pan front cover bolts to 25 N.m (18 lb ft).

2. Tighten the oil pan-to-rear cover bolts to 12 N.m (106 lb in).

3. Tighten the transmission bolts/stud to 50 N.m (37 lb ft).

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado