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Home >> Chevrolet >> 2023 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 3.0L (Lm2) Diesel - Specifications) >> Specifications >> Bolt Tightening Sequence >> Cylinder Head Bolt Torque Sequence

Cylinder Head Bolt Torque Sequence

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Cylinder Head Bolt Sequence
GM5149808Courtesy of GENERAL MOTORS COMPANY
Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Cylinder Head Bolt [14x] Yes - First Pass: Tighten all bolts to 40 N.m (30 lb ft)
Second Pass: Loosen bolts (13, 14, 5, 6, 4, 3, 11, 12) completely.
Third Pass: Tighten bolts (13, 14, 5, 6, 4, 3, 11, 12) to 40 N.m (30 lb ft)
Fourth Pass: Loosen bolts (9, 10, 1, 2, 7, 8) completely.
Fifth Pass: Tighten bolts (9, 10, 1, 2, 7, 8) to 40 N.m (30 lb ft)
Sixth Pass: Tighten all bolts to 80 N.m (59 lb ft)
Final Pass: Using EN-45059 - A  Angle Meter, tighten all bolts in sequence 225 degrees
Cylinder Head Replacement