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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (Engine Mechanical - 6.6L - Introduction) >> Specifications >> Thread Repair Specifications >> Upper Rocker Arm Cover - Top View

Upper Rocker Arm Cover - Top View

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Fig 1: Upper Rocker Arm Cover (Top View)
GM1491287Courtesy of GENERAL MOTORS CORP.
Upper Rocker Arm Cover - Top View

Service Hole Location Thread Size Drill Counterbore Tool Stop Collar Tap Driver Insert Drill Depth (Max) Tap Depth (Min)
- mm (in) mm (in)
1 M 5 x 0.8 N/A N/A N/A N/A N/A N/A 13 0.512 10 0.394
2 M 8 x 1.25 -206 -207 N/A -208 -209 -210 21 0.827 17 0.669
3 M 6 x 1.0 -201 -202 N/A -203 -204 -205 16 0.630 12 0.472