GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 CTS 🢒 Preface 🢒 Cautions and Notices 🢒 Thread Repair Specifications
Table 1: Left Cylinder Head Camshaft Cover Face
Table 2: Left Cylinder Head Front Face
Table 3: Left Cylinder Head Intake Face
Table 4: Left Cylinder Head Exhaust Face
Table 5: Left Cylinder Head Rear Face
Table 6: Right Cylinder Head Camshaft Cover Face
Table 7: Right Cylinder Head Front Face
Table 8: Right Cylinder Head Intake Face
Table 9: Right Cylinder Head Exhaust Face
Table 10: Right Cylinder Head Rear Face
Table 11: Engine Block Front
Table 12: Engine Block Left Side
Table 13: Engine Block Right Side
Table 14: Engine Block Rear
Table 15: Engine Block Bottom
Table 16: Engine Block Left Deck Face
Table 17: Engine Block Right Deck Face
Table 18: Engine Front Cover - First Design
Table 19: Engine Front Cover - Second Design
Table 20: Upper Intake Manifold - Top
Table 21: Upper Intake Manifold - Front
Table 22: Upper Intake Manifold - Rear
Table 23: Lower Intake Manifold - Top
Table 24: Oil Pan Front
Table 25: Oil Pan Left Side
Table 26: Oil Pan Right Side
Table 27: Oil Pan Rear
Table 28: Oil Pan Bottom
Table 29: Oil Pan Top

Left Cylinder Head Camshaft Cover Face
Object Number: 915922 Size: LF

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

Left Cylinder Head Front Face
Object Number: 915924 Size: LF

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

Left Cylinder Head Intake Face
Object Number: 915927 Size: MF

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

Left Cylinder Head Exhaust Face
Object Number: 915932 Size: LF

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

Left Cylinder Head Rear Face
Object Number: 915951 Size: LF

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

Right Cylinder Head Camshaft Cover Face
Object Number: 915963 Size: LF

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

Right Cylinder Head Front Face
Object Number: 915968 Size: LF

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

Right Cylinder Head Intake Face
Object Number: 915974 Size: MF

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

Right Cylinder Head Exhaust Face
Object Number: 915998 Size: LF

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

Right Cylinder Head Rear Face
Object Number: 916091 Size: LF

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

Engine Block Front
Object Number: 916121 Size: LF

Engine Block 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

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

Engine Block Left Side
Object Number: 916127 Size: LF

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

Engine Block Right Side
Object Number: 916131 Size: LF

Engine Block Right 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

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

Engine Block Rear
Object Number: 916134 Size: LF

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

Engine Block Bottom
Object Number: 916146 Size: LF

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

Engine Block Left Deck Face
Object Number: 916175 Size: LF

Engine Block Left Deck 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

2

M11 x 2.0

723

N/A

N/A

724

725

108

102.5

4.0354

94.0

3.7008

Engine Block Right Deck Face
Object Number: 916197 Size: LF

Engine Block Right Deck 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

M11 x 2.0

723

N/A

N/A

724

725

108

102.5

4.0354

94.0

3.7008

Engine Front Cover - First Design
Object Number: 916217 Size: LF

Engine Front Cover - First Design

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

Engine Front Cover - Second Design
Object Number: 1410503 Size: LF

Engine Front Cover - Second Design

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

Upper Intake Manifold - Top
Object Number: 916270 Size: LF

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

Upper Intake Manifold - Front
Object Number: 916280 Size: MF

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

Upper Intake Manifold - Rear
Object Number: 916357 Size: MF

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

Lower Intake Manifold - Top
Object Number: 916915 Size: LF

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

Oil Pan Front
Object Number: 916366 Size: LF

Oil Pan 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

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

Oil Pan Left Side
Object Number: 916369 Size: MF

Oil Pan 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

M6 x 1.0

201

202

N/A

203

204

205

22.5

0.8858

18.0

0.7087

Oil Pan Right Side
Object Number: 916371 Size: MF

Oil Pan Right 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

M12 x 1.75

856

857

N/A

858

859

416

THRU

THRU

Oil Pan Rear
Object Number: 916389 Size: MF

Oil Pan 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

215

THRU

THRU

2

M10 x 1.5

211

212

N/A

213

214

215

33.5

1.3189

27.0

1.0630

Oil Pan Bottom
Object Number: 916404 Size: LF

Oil Pan 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

M6 x 1.0

701

N/A

N/A

203

204

205

22.5

0.8858

18.0

0.7087

Oil Pan Top
Object Number: 916427 Size: LF

Oil Pan 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

701

N/A

N/A

203

204

205

28.0

1.1024

23.5

0.9252