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    1999 GMC Truck Envoy 4.3L SFI 6cyl

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    Avalanche, Sierra, Silverado, C&K Series, 1999-2005

    Torque Specifications

    Print

    TORQUE SPECIFICATIONS
    All readings in ft. lbs.
    YearEngine Displacement LitersEngine ID/VINCylinder Head BoltsMain Bearing BoltsRod Brearing BoltsCrankshaft Damper BoltsFlywheel BoltsManifoldSpark PlugsOil Pan Drain Plug
                    IntakeExhaust    
    19994.3W-77-7474--1118
      4.8V-------1218
      5.0M---7474--1518
      5.3T-------1218
      5.7R---7474--1518
      6.0U-------1218
      6.5F--48200653126   18
      7.4J85100451106730221518
    1* NOTE: Applies to Lower Manifold only.
    2- 1st pass: 22 ft. lbs.
    3- 20 ft. lbs. plus 70 degrees
    4- Lower intake manifold:
    5- Tighten bolts to 12 ft. lbs.
    6- Step 1: 22 ft. lbs.
    7- Inner bolts;
    8- Step 1: 15 ft. lbs.
    9- Use a new bolt
    10- Step 1: 15 ft. lbs.
    11- Step 1: 44 inch lbs.
    12- Nuts: 39 ft. lbs.
    13- Step 1: 20 ft. lbs.
    14- Outer bolts on caps 2-4: 67 ft. lbs.
    15- Tighten all bolts to 20 ft. lbs.
    16- Two bolt bearing cap:
    17- Step 1: 22 ft. lbs.
    18- Outer bolts: 100 ft. lbs.
    19R M8 bolts: 18 ft. lbs.
    20- 1st pass: 72 ft. lbs.
    21- 1st pass: 47 ft. lbs.
    22- 1st pass: 58 ft. lbs.
    23- 1st pass: 22 ft. lbs.
    24- Inner bolts: 22 ft. lbs.,
    25- 22 ft. lbs., plus 90 degrees
    26- 1st pass: 59 ft. lbs.
    27- 1st & 2nd pass: 44 inch lbs.
    TORQUE SPECIFICATIONS
    All readings in ft. lbs.
    YearEngine Displacement LitersEngine ID/VINCylinder Head BoltsMain Bearing BoltsRod Brearing BoltsCrankshaft Damper BoltsFlywheel BoltsManifoldSpark PlugsOil Pan Drain Plug
                    IntakeExhaust    
    20004.3W-77-7474--1118
      4.8V-------1218
      5.0M---7474--1518
      5.3T-------1218
      5.7R---7474--1518
      6.0U-------1218
      6.5F--48200653126   18
      7.4J85100451106730221518
    1* NOTE: Applies to Lower Manifold only.
    2- 1st pass: 22 ft. lbs.
    3- 20 ft. lbs. plus 70 degrees
    4- Lower intake manifold:
    5- Tighten bolts to 12 ft. lbs.
    6- Step 1: 22 ft. lbs.
    7- Inner bolts;
    8- Step 1: 15 ft. lbs.
    9- Use a new bolt
    10- Step 1: 15 ft. lbs.
    11- Step 1: 44 inch lbs.
    12- Nuts: 39 ft. lbs.
    13- Step 1: 20 ft. lbs.
    14- Outer bolts on caps 2-4: 67 ft. lbs.
    15- Tighten all bolts to 20 ft. lbs.
    16- Two bolt bearing cap:
    17- Step 1: 22 ft. lbs.
    18- Outer bolts: 100 ft. lbs.
    19R M8 bolts: 18 ft. lbs.
    20- 1st pass: 72 ft. lbs.
    21- 1st pass: 47 ft. lbs.
    22- 1st pass: 58 ft. lbs.
    23- 1st pass: 22 ft. lbs.
    24- Inner bolts: 22 ft. lbs.,
    25- 22 ft. lbs., plus 90 degrees
    26- 1st pass: 59 ft. lbs.
    27- 1st & 2nd pass: 44 inch lbs.
    TORQUE SPECIFICATIONS
    All readings in ft. lbs.
    YearEngine Displacement LitersEngine ID/VINCylinder Head BoltsMain Bearing BoltsRod Brearing BoltsCrankshaft Damper BoltsFlywheel BoltsManifoldSpark PlugsOil Pan Drain Plug
                    IntakeExhaust    
    20014.3W-77-7074--1118
      4.8V-------1218
      5.0M---7474--1518
      5.3T-------1218
      5.7R---7474--1518
      6.0U-------1218
      6.5F--48200653126   18
      6.61R--260-1528   62
      8.1G--X189--a1521
    1* NOTE: Applies to Lower Manifold only.
    2- 1st pass: 22 ft. lbs.
    3- 20 ft. lbs. plus 70 degrees
    4- Lower intake manifold:
    5- Tighten bolts to 12 ft. lbs.
    6- Step 1: 22 ft. lbs.
    7- Inner bolts;
    8- Step 1: 15 ft. lbs.
    9- Use a new bolt
    10- Step 1: 15 ft. lbs.
    11- Step 1: 44 inch lbs.
    12- Nuts: 39 ft. lbs.
    13- Step 1: 20 ft. lbs.
    14- Outer bolts on caps 2-4: 67 ft. lbs.
    15- Tighten all bolts to 20 ft. lbs.
    16- Two bolt bearing cap:
    17- Step 1: 22 ft. lbs.
    18- Outer bolts: 100 ft. lbs.
    19R M8 bolts: 18 ft. lbs.
    20- 1st pass: 72 ft. lbs.
    21- 1st pass: 47 ft. lbs.
    22- 1st pass: 58 ft. lbs.
    23- 1st pass: 22 ft. lbs.
    24- Inner bolts: 22 ft. lbs.,
    25- 22 ft. lbs., plus 90 degrees
    26- 1st pass: 59 ft. lbs.
    27- 1st & 2nd pass: 44 inch lbs.
    TORQUE SPECIFICATIONS
    All readings in ft. lbs.
    YearEngine Displacement LitersEngine ID/VINCylinder Head BoltsMain Bearing BoltsRod Brearing BoltsCrankshaft Damper BoltsFlywheel BoltsManifoldSpark PlugsOil Pan Drain Plug
                    IntakeExhaust    
    20024.3W-77-7074--1118
      4.8V-------1118
      5.3T-------1118
      6.0U-------1118
      6.61---278-1525   62
      8.1G--R189---1521
    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- 2002-04 Models: Step 1: 22 ft. lbs.
    7- Inner bolts:
    8- Step 1: 15 ft. lbs.
    9- Installation pass: 240 ft. lbs.
    10- Step 1: 15 ft. lbs.
    11- Step 1: 44 inch lbs.
    12- Step 1: 11 ft. lbs.
    13- 2002-04 M8 bolts: 18 ft. lbs.
    14- 2002-04 Step 1: 72 ft. lbs.
    15- Step 1: 47 ft. lbs.
    16- Step 1: 58 ft. lbs.
    17- Step 1: 22 ft. lbs.
    18- Inner bolts: 22 ft. lbs.,
    19R 22 ft. lbs., plus 90 degrees
    20- Step 1: 59 ft. lbs.
    21- Steps 1 & 2: 44 inch lbs.
    22- Center bolt: 26 ft. lbs.
    23- 1st pass: 74 ft. lbs.
    TORQUE SPECIFICATIONS
    All readings in ft. lbs.
    YearEngine Displacement LitersEngine ID/VINCylinder Head BoltsMain Bearing BoltsRod Brearing BoltsCrankshaft Damper BoltsFlywheel BoltsManifoldSpark PlugsOil Pan Drain Plug
                    IntakeExhaust    
    20034.3X-77-7074--1118
      4.8V-------1118
      5.3T-------1118
      5.3Z-------1118
      6.0U-------1118
      6.0N-------1118
      6.61---278-1525   62
      8.1G--R189---1521
    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- 2002-04 Models: Step 1: 22 ft. lbs.
    7- Inner bolts:
    8- Step 1: 15 ft. lbs.
    9- Installation pass: 240 ft. lbs.
    10- Step 1: 15 ft. lbs.
    11- Step 1: 44 inch lbs.
    12- Step 1: 11 ft. lbs.
    13- 2002-04 M8 bolts: 18 ft. lbs.
    14- 2002-04 Step 1: 72 ft. lbs.
    15- Step 1: 47 ft. lbs.
    16- Step 1: 58 ft. lbs.
    17- Step 1: 22 ft. lbs.
    18- Inner bolts: 22 ft. lbs.,
    19R 22 ft. lbs., plus 90 degrees
    20- Step 1: 59 ft. lbs.
    21- Steps 1 & 2: 44 inch lbs.
    22- Center bolt: 26 ft. lbs.
    23- 1st pass: 74 ft. lbs.
    TORQUE SPECIFICATIONS
    All readings in ft. lbs.
    YearEngine Displacement LitersEngine ID/VINCylinder Head BoltsMain Bearing BoltsRod Brearing BoltsCrankshaft Damper BoltsFlywheel BoltsManifoldSpark PlugsOil Pan Drain Plug
                    IntakeExhaust    
    20044.3X-77-7074--1118
      4.8V-------1118
      5.3T-------1118
      5.3Z-------1118
      6.0U-------1118
      6.0N-------1118
      6.61---278-1525   62
      8.1G--R189---1521
    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- 2002-04 Models: Step 1: 22 ft. lbs.
    7- Inner bolts:
    8- Step 1: 15 ft. lbs.
    9- Installation pass: 240 ft. lbs.
    10- Step 1: 15 ft. lbs.
    11- Step 1: 44 inch lbs.
    12- Step 1: 11 ft. lbs.
    13- 2002-04 M8 bolts: 18 ft. lbs.
    14- 2002-04 Step 1: 72 ft. lbs.
    15- Step 1: 47 ft. lbs.
    16- Step 1: 58 ft. lbs.
    17- Step 1: 22 ft. lbs.
    18- Inner bolts: 22 ft. lbs.,
    19R 22 ft. lbs., plus 90 degrees
    20- Step 1: 59 ft. lbs.
    21- Steps 1 & 2: 44 inch lbs.
    22- Center bolt: 26 ft. lbs.
    23- 1st pass: 74 ft. lbs.
    TORQUE SPECIFICATIONS
    All readings in ft. lbs.
    YearEngine Displacement LitersEngine ID/VINCylinder Head BoltsMain Bearing BoltsRod Brearing BoltsCrankshaft Damper BoltsFlywheel BoltsManifoldSpark PlugsOil Pan Drain Plug
                    IntakeExhaust    
    20054.3X-77-7074--1118
      4.8V-------1118
      5.3B-------1118
      5.3T-------1118
      5.3Z-------1118
      6.0U-------1118
      6.0N-------1118
      6.62-----1525   62
      8.1G--R189---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- 2002-04 Models: Step 1: 22 ft. lbs.
    7- Inner bolts:
    8- Step 1: 15 ft. lbs.
    9- Installation pass: 240 ft. lbs.
    10- Step 1: 15 ft. lbs.
    11- Step 1: 44 inch lbs.
    12- Step 1: 11 ft. lbs.
    13- 2002-04 M8 bolts: 18 ft. lbs.
    14- 2002-04 Step 1: 72 ft. lbs.
    15- Step 1: 47 ft. lbs.
    16- Step 1: 58 ft. lbs.
    17- Step 1: 22 ft. lbs.
    18- Inner bolts: 22 ft. lbs.,
    19R 22 ft. lbs., plus 90 degrees
    20- Step 1: 59 ft. lbs.
    21- Steps 1 & 2: 44 inch lbs.
    22- Center bolt: 26 ft. lbs.
    23- 1st pass: 74 ft. lbs.
    TORQUE SPECIFICATIONS
    All readings in ft. lbs.
    YearEngine Displacement LitersEngine ID/VINCylinder Head BoltsMain Bearing BoltsRod Brearing BoltsCrankshaft Damper BoltsFlywheel BoltsManifoldSpark PlugsOil Pan Drain Plug
                    IntakeExhaust    
    19995.7R---7474--1518
      6.5S--48200653126   18
      7.4J85100451106730221521
    1* NOTE: Applies to Lower Manifold only.
    2TORQUE SPECIFICATIONS CHART
    3- Step 1: 22 ft. lbs.
    4- Outer bolts on caps 2-4: 67 ft. lbs.
    5- Step 1: 22 ft. lbs.
    6- Step 1: 27 inch lbs.
    7- Step 1: 11 ft. lbs.
    8- Step 1: 20 ft. lbs.
    9- Inner bolts:
    10- Inner bolts: 15 ft. lbs., plus 80 degrees
    11- Step 1: 15 ft. lbs.
    12- Step 1: 15 ft. lbs.
    13- Step 1: 44 inch lbs.
    14- Step 1: 11 ft. lbs.
    15- 1st pass: 22 ft. lbs.
    16- 22 ft. lbs., plus 90 degrees
    17- Step 1: 15 ft. lbs.
    18- 1st pass: 30 ft. lbs.
    19R 1st & 2nd pass: 44 inch lbs.
    20- Installation pass: 240 ft. lbs. (to seat damper)
    21- Center bolt: 26 ft. lbs.
    22- 1st pass: 44 inch lbs.
    23- Center bolt: 26 ft. lbs.
    24- M8 bolts: 22 ft. lbs.
    25- Step 1: 11 ft. lbs.
    TORQUE SPECIFICATIONS
    all readings in ft. lbs.
    YearEngine Displacement Liters (cc)Engine ID/VINCylinder Head BoltsMain Bearing BoltsRod Brearing BoltsCrankshaft Damper BoltsFlywheel BoltsManifoldSpark PlugsLug Nuts
                    IntakeExhaust    
    19995.7 (5735)R---7474--15-
      6.5 (6473)S--48200653126   -
      7.4 (7440)J851004511067302215-
    1* NOTE: Applies to Lower Manifold only.
    2A Step 1: 20 ft. lbs.
    3B Outer bolts on caps 2-4: 67 ft. lbs.
    4C Tighten all bolts to 20 ft. lbs.
    5D Lower intake manifold:
    6E Tighten bolts to 12 ft. lbs.
    7F All 5 & 6 stud single rear wheels: 110 ft. lbs.
    8G Outer bolts: 100 ft. lbs.
    9H Step 1: 22 ft. lbs.
    10I Step 1: 22 ft. lbs.
    11J Step 1: 22 ft. lbs.
    12K Inner bolts;
    13L Step 1: 15 ft. lbs.
    14M Use a new bolt
    15N Step 1: 15 ft. lbs.
    16O Step 1: 44 in. lbs.
    17P Nuts: 39 ft. lbs.
    18Q 1st pass: 22 ft. lbs.
    19R 22 ft. lbs., plus 90 degrees
    20S 1st pass: 30 ft. lbs.
    21T 1st & 2nd pass: 44 inch lbs.
    22U 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 *    
    2005X4.3-77-7074--1118
      V4.8-------1118
      T5.3-------1118
      Z5.3-------1118
      U6.0-------1118
      26.6-----2515   62
      G8.1-R-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.
    21R 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 *    
    2005X4.3-77-7074--1118
      V4.8-------1118
      B5.3-------1118
      T5.3-------1118
      Z5.3-------1118
      N6.0-------1118
      U6.0-------1118
      26.6-----2515   62
      G8.1-R-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.
    21R 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





    Click image to see an enlarged view

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



    Click image to see an enlarged view

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

     
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