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Thread Repair Specifications

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Left Cylinder Head Camshaft Cover Face
GM915922Courtesy of GENERAL MOTORS CORP.
Left Cylinder Head Camshaft Cover Face

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 201 202 N/A 203 204 205 22.5 0.8858 18.0 0.7087
2 M6 x 1.0 201 202 N/A 203 204 205 THRU THRU
3 M6 x 1.0 701 N/A N/A 203 204 205 28.5 1.1220 24.0 0.9449
4 M20 x 1.5 715 716 N/A 717 718 719 25.0 0.9842 17.0 0.6693
Fig 2: Left Cylinder Head Front Face
GM915924Courtesy of GENERAL MOTORS CORP.
Left Cylinder Head Front Face

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M8 x 1.25 206 207 N/A 208 209 210 THRU THRU
2 M12 x 1.75 856 857 N/A 858 859 416 40.0 1.5748 32.5 1.2795
3 M8 x 1.25 206 207 N/A 208 209 210 18.0 0.7087 22.5 0.8858
Fig 3: Left Cylinder Head Intake Face
GM915927Courtesy of GENERAL MOTORS CORP.
Left Cylinder Head Intake Face

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
Fig 4: Left Cylinder Head Exhaust Face
GM915932Courtesy of GENERAL MOTORS CORP.
Left Cylinder Head Exhaust Face

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3189 27.0 1.0630
2 M12 x 1.5 705 706 N/A 707 708 709 27.5 1.0827 13.0 0.5118
3 M6 x 1.0 201 202 N/A 203 204 205 22.5 0.8858 18.0 0.0000
4 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
Fig 5: Left Cylinder Head Rear Face
GM915951Courtesy of GENERAL MOTORS CORP.
Left Cylinder Head Rear Face

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3189 27.0 1.0630
Fig 6: Right Cylinder Head Camshaft Cover Face
GM915963Courtesy of GENERAL MOTORS CORP.
Right Cylinder Head Camshaft Cover Face

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 201 202 N/A 203 204 205 THRU THRU
2 M6 x 1.0 701 N/A N/A 203 204 205 28.5 1.1220 24.0 0.9449
3 M20 x 1.5 715 716 N/A 717 718 719 25.0 0.9842 17.0 0.6693
4 M6 x 1.0 201 202 N/A 203 204 205 22.5 0.8858 18.0 0.7087
Fig 7: Right Cylinder Head Front Face
GM915968Courtesy of GENERAL MOTORS CORP.
Right Cylinder Head Front Face

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M8 x 1.25 206 207 N/A 208 209 210 THRU THRU
2 M6 x 1.0 201 202 N/A 203 204 205 22.5 0.8880 18.0 0.7087
3 M6 x 1.0 201 202 N/A 203 204 205 THRU THRU
4 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
5 M12 x 1.75 856 857 N/A 858 859 416 40.0 1.5748 32.5 1.2795
Fig 8: Right Cylinder Head Intake Face
GM915974Courtesy of GENERAL MOTORS CORP.
Right Cylinder Head Intake Face

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
Fig 9: Right Cylinder Head Exhaust Face
GM915998Courtesy of GENERAL MOTORS CORP.
Right Cylinder Head Exhaust Face

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 201 202 N/A 203 204 205 22.5 0.8858 18.0 0.0000
2 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3189 27.0 1.0630
3 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
Fig 10: Right Cylinder Head Rear Face
GM916091Courtesy of GENERAL MOTORS CORP.
Right Cylinder Head Rear Face

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3189 27.0 1.0630
Fig 11: Engine Block Front
GM1467755Courtesy of GENERAL MOTORS CORP.
Engine Block Front (LP1)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
2 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3189 27.0 1.0630
3 M8 x 1.25 206 207 N/A 208 209 210 THRU 23.0 0.9055
4 M8 x 1.25 206 207 N/A 208 209 210 THRU THRU
5 M10 x 1.5 211 212 N/A 213 214 215 THRU 28.0 1.1024
6 M10 x 1.5 211 212 N/A 213 214 215 THRU 20.0 0.7874
Fig 12: Engine Block Front Component View 3.6L (LY7)
GM1855078Courtesy of GENERAL MOTORS CORP.
Engine Block Front (LY7)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
2 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3189 27.0 1.0630
3 M8 x 1.25 206 207 N/A 208 209 210 THRU 23.0 0.9055
4 M8 x 1.25 206 207 N/A 208 209 210 THRU THRU
5 M10 x 1.5 211 212 N/A 213 214 215 28.0 1.1024 28.0 1.1024
6 M10 x 1.5 211 212 N/A 213 214 215 THRU 20.0 0.7874
7 M10 x 1.5 211 212 N/A 213 214 215 THRU 28.0 1.1024
Fig 13: Engine Block Left Side
GM916127Courtesy of GENERAL MOTORS CORP.
Engine Block Left Side

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
2 M20 x 1.5 715 716 N/A 717 718 719 30.0 1.1810 20.0 0.7874
3 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3190 27.0 1.0630
4 M14 x 1.5 409 410 N/A 411 412 735 THRU 15.0 0.5905
5 M8 x 1.25 206 207 N/A 208 209 415 16.5 0.6496 11.0 0.4331
Fig 14: Engine Block Right Side
GM1467758Courtesy of GENERAL MOTORS CORP.
Engine Block Right Side (LP1)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 201 202 N/A 203 204 205 22.5 0.8858 18.0 0.7087
2 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
3 M14 x 1.5 409 410 N/A 411 412 735 THRU 15.0 0.5905
4 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3190 27.0 1.0630
Fig 15: Engine Block Right Side Component View 3.6L (LY7)
GM1855079Courtesy of GENERAL MOTORS CORP.
Engine Block Right Side (LY7)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 201 202 N/A 203 204 205 22.5 0.8858 18.0 0.7087
2 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
3 M14 x 1.5 409 410 N/A 411 412 735 THRU 15.0 0.5905
4 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3190 27.0 1.0630
Fig 16: Engine Block Rear
GM916134Courtesy of GENERAL MOTORS CORP.
Engine Block Rear

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M10 x 1.5 211 212 N/A 213 214 420 33.5 1.3190 27.0 1.0630
2 M6 x 1.0 201 202 N/A 203 204 205 22.5 0.8858 18.0 0.7087
3 M14 x 1.5 409 410 N/A 411 412 735 THRU 15.0 0.5905
4 M10 x 1.5 211 212 N/A 213 214 216 39.5 1.5551 33.0 1.2992
5 M10 x 1.5 211 212 N/A 213 214 420 THRU THRU
Fig 17: Engine Block Bottom
GM916146Courtesy of GENERAL MOTORS CORP.
Engine Block Bottom

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M10 x 2.0 720 N/A N/A 721 722 104 56.0 2.2047 49.0 1.9291
2 M8 x 1.25 702 N/A N/A 703 704 620 46.0 1.8110 40.5 1.5945
3 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
4 M6 x 1.0 201 202 N/A 203 204 205 THRU THRU
Fig 18: Engine Block Left Deck Face
GM916175Courtesy of GENERAL MOTORS CORP.
Engine Block Left Deck Face (LP1)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
2 M11 x 2.0 723 N/A N/A 724 725 108 102.5 4.0354 94.0 3.7008
Fig 19: Engine Block Left Deck Face Component View 3.6L (LY7)
GM1855096Courtesy of GENERAL MOTORS CORP.
Engine Block Left Deck Face (LY7)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
2 M11 x 2.0 723 N/A N/A 724 725 108 102.5 4.0354 94.0 3.7008
Fig 20: Engine Block Right Deck Face
GM916197Courtesy of GENERAL MOTORS CORP.
Engine Block Right Deck Face (LP1)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M11 x 2.0 723 N/A N/A 724 725 108 102.5 4.0354 94.0 3.7008
Fig 21: Engine Block Right Deck Face Component View 3.6L (LY7)
GM1855099Courtesy of GENERAL MOTORS CORP.
Engine Block Right Deck Face (LY7)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M11 x 2.0 723 N/A N/A 724 725 108 102.5 4.0354 94.0 3.7008
2 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
Fig 22: Engine Front Cover Thread Repair Points - Second Design
GM1410503Courtesy of GENERAL MOTORS CORP.
Engine Front Cover

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 201 202 N/A 203 204 205 THRU THRU
2 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
3 M6 x 1.0 201 202 N/A 203 204 205 21.5 0.8465 18.0 0.7087
4 M10 x 1.5 211 212 N/A 213 214 215 THRU THRU
5 M10 x 1.5 211 212 N/A 213 214 420 32.5 1.2795 27.0 1.0630
Fig 23: Upper Intake Manifold - Top
GM1888086Courtesy of GENERAL MOTORS CORP.
Upper Intake Manifold - Top

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 201 202 N/A 203 204 205 THRU THRU
Fig 24: Upper Intake Manifold - Front
GM1888089Courtesy of GENERAL MOTORS CORP.
Upper Intake Manifold - Front

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 201 202 N/A 203 204 205 THRU THRU
Fig 25: Upper Intake Manifold - Rear
GM1888092Courtesy of GENERAL MOTORS CORP.
Upper Intake Manifold - Rear

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 201 202 N/A 203 204 205 THRU THRU
Fig 26: Lower Intake Manifold - Top
GM916915Courtesy of GENERAL MOTORS CORP.
Lower Intake Manifold - Top

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 201 202 N/A 203 204 205 THRU THRU
2 M8 x 1.25 206 207 N/A 208 209 210 THRU THRU
Fig 27: Oil Pan Front (RWD)
GM1670597Courtesy of GENERAL MOTORS CORP.
Oil Pan Front (RWD)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M10 x 1.5 211 212 N/A 213 214 420 33.5 1.3189 27.0 1.0630
2 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
3 M8 x 1.25 610 N/A N/A 208 209 620 37.5 1.4764 32.0 1.2598
Fig 28: Oil Pan Front Component View (AWD)
GM1665635Courtesy of GENERAL MOTORS CORP.
Oil Pan Front (AWD)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
2 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3189 27.0 1.0630
3 M8 x 1.25 610 N/A N/A 208 209 620 37.5 1.4764 32.0 1.2598
Fig 29: Oil Pan Left Side (RWD)
GM1670600Courtesy of GENERAL MOTORS CORP.
Oil Pan Left Side (RWD)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 201 202 N/A 203 204 205 22.5 0.8858 18.0 0.7087
Fig 30: Oil Pan Left Side Component View (AWD)
GM1665636Courtesy of GENERAL MOTORS CORP.
Oil Pan Left Side (AWD)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M10 x 1.5 211 212 N/A 213 214 420 33.5 1.3189 27.0 1.0630
2 M12 x 1.75 856 857 N/A 858 859 415 THRU THRU
3 M8 x 1.25 206 207 N/A 208 209 210 28.5 1.1220 23.0 0.9055
4 M6 x 1.0 201 202 N/A 203 204 205 22.5 0.8858 18.0 0.7087
Fig 31: Oil Pan Right Side (RWD)
GM1670602Courtesy of GENERAL MOTORS CORP.
Oil Pan Right Side (RWD)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M12 x 1.75 856 857 N/A 858 859 416 THRU THRU
Fig 32: Oil Pan Right Side Component View (AWD)
GM1665637Courtesy of GENERAL MOTORS CORP.
Oil Pan Right Side (AWD)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M12 x 1.75 856 857 N/A 858 859 855 39.5 1.5551 32.0 1.2598
2 M12 x 1.75 856 N/A N/A 858 859 855 39.5 1.5551 32.0 1.2598
Fig 33: Oil Pan Rear (RWD)
GM1670604Courtesy of GENERAL MOTORS CORP.
Oil Pan Rear (RWD)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M10 x 1.5 211 212 N/A 213 214 215 THRU THRU
2 M10 x 1.5 211 212 N/A 213 214 215 33.5 1.3189 27.0 1.0630
Fig 34: Oil Pan Rear Component View (AWD)
GM1665638Courtesy of GENERAL MOTORS CORP.
Oil Pan Rear (AWD)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M10 x 1.5 211 212 N/A 213 214 420 33.5 1.3189 27.0 1.0630
2 M10 x 1.5 211 212 N/A 213 214 420 THRU THRU
Fig 35: Oil Pan Top (RWD)
GM1670605Courtesy of GENERAL MOTORS CORP.
Oil Pan Top (RWD)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 701 N/A N/A 203 204 205 28.0 1.1024 23.5 0.9252
Fig 36: Oil Pan Top Component View (AWD)
GM1665640Courtesy of GENERAL MOTORS CORP.
Oil Pan Top (AWD)

Hole Location Thread Size Drill Counter Bore Tool Stop Collar Tap Driver Insert Drill Depth (Maximum) Tap Depth (Minimum)
J 42385- MM (IN) MM (IN)
1 M6 x 1.0 701 N/A N/A 203 204 205 28.0 1.1024 23.5 0.9252
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