Sierra, Silverado 2006-2007

Torque Specifications

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TORQUE SPECIFICATIONS
all readings in ft. lbs.
YearEngine ID/VINEngine Displacement LitersCylinder Head BoltsMain Bearing BoltsRod Bearing BoltsCrankshaft Damper BoltsFlywheel BoltsManifoldSpark PlugsOil Pan Drain Plug
                ExhaustIntake *    
2006X4.3-77-7074--1118
  V4.8-------1118
  B5.3-------1118
  T5.3-------1118
  Z5.3-------1118
  N6.0-------1118
  U6.0-------1118
  26.6-----2515   62
  D6.6-----2515   62
  G8.1---189---2221
1* NOTE: Applies to Lower Manifold only.
2- Step 1: 22 ft. lbs.
3- 20 ft. lbs. plus 70 degrees
4- Lower intake manifold:
5- Tighten bolts to 12 ft. lbs.
6- M11 bolts Step 1: 22 ft. lbs.
7
8- Inner bolts:
9- Step 1: 15 ft. lbs.
10- Installation pass: 240 ft. lbs.
11- Step 1: 15 ft. lbs.
12- Step 1: 44 inch lbs.
13- Step 1: 11 ft. lbs.
14
15- M12 bolts: Step 1: 37 ft. lbs.
16- Step 1: 74 ft. lbs.
17- Step 1: 47 ft. lbs.
18- 1st pass: 74 ft. lbs.
19- Step 1: 58 ft. lbs.
20- Step 1: 22 ft. lbs.
21- Inner bolts: 22 ft. lbs.,
22- 22 ft. lbs., plus 90 degrees
23- Step 1: 59 ft. lbs.
24- Steps 1 & 2: 44 inch lbs.
25- Center bolt: 26 ft. lbs.
TORQUE SPECIFICATIONS
all readings in ft. lbs.
YearEngine ID/VINEngine Displacement LitersCylinder Head BoltsMain Bearing BoltsRod Bearing BoltsCrankshaft Damper BoltsFlywheel BoltsManifoldSpark PlugsOil Pan Drain Plug
                ExhaustIntake *    
2007X4.3-77-7074--1118
  V4.8-------1118
  C4.8-------1118
  B5.3-------1118
  T5.3-------1118
  Z5.3-------1118
  M5.3-------1118
  05.3-------1118
  J5.3-------1118
  35.3-------1118
  N6.0-------1118
  U6.0-------1118
  Y6.0-------1118
  K6.0-------1118
  86.2-------1118
  D6.6-----2515   62
  66.6-----2515   62
  G8.1---189---2221
1* NOTE: Applies to Lower Manifold only.
2- Step 1: 22 ft. lbs.
3- 20 ft. lbs. plus 70 degrees
4- Lower intake manifold:
5- Tighten bolts to 12 ft. lbs.
6- M11 bolts Step 1: 22 ft. lbs.
7
8- Inner bolts:
9- Step 1: 15 ft. lbs.
10- Installation pass: 240 ft. lbs.
11- Step 1: 15 ft. lbs.
12- Step 1: 44 inch lbs.
13- Step 1: 11 ft. lbs.
14
15- M12 bolts: Step 1: 37 ft. lbs.
16- Step 1: 74 ft. lbs.
17- Step 1: 47 ft. lbs.
18- 1st pass: 74 ft. lbs.
19- Step 1: 58 ft. lbs.
20- Step 1: 22 ft. lbs.
21- Inner bolts: 22 ft. lbs.,
22- 22 ft. lbs., plus 90 degrees
23- Step 1: 59 ft. lbs.
24- Steps 1 & 2: 44 inch lbs.
25- Center bolt: 26 ft. lbs.

Main Bearing Torque Sequence





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Fig. Main bearing bolt identification and torque sequence-4.8L, 5.3L 6.0L and 6.2L engines

 
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