GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Colorado Pickup - 2WD 🢒 Engine 🢒 Engine Mechanical - 3.5L (L52) 🢒 Thread Repair Specifications
Table 1: Engine Block - Top View
Table 2: Engine Block - Bottom View
Table 3: Engine Block - Left Side View
Table 4: Engine Block - Right Side View
Table 5: Engine Block - Front View
Table 6: Engine Block - Rear View
Table 7: Cylinder Head - Top View
Table 8: Cylinder Head - End - Front View
Table 9: Cylinder Head - End - Rear View
Table 10: Cylinder Head - Intake Manifold Deck View
Table 11: Cylinder Head - Exhaust Manifold Deck View
Table 12: Oil Pan - Bottom View
Table 13: Oil Pan - Rear View
Table 14: Engine Front Cover
Table 15: Crankshaft Rear Oil Seal Housing

Engine Block - Top View
Object Number: 858377 Size: MF

Engine Block - Top View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 11 x 2

402

n/a

n/a

403

404

108

59

2.324

51

2.009

2

M 6 x 1

201

202

n/a

203

204

205

22

0.866

18

0.709

3

M 6 x 1

201

202

n/a

203

204

205

30

1.182

26

1.024

Engine Block - Bottom View
Object Number: 858381 Size: MF

Engine Block - Bottom View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 10 x 1.5

417

n/a

n/a

418

419

420

49

1.93

42

1.655

2

M 8 x 1.25

206

207

n/a

208

209

210

30

1.182

25

0.985

3

M 10 x 1.5

417

n/a

n/a

418

419

420

30

1.182

25

0.985

Engine Block - Left Side View
Object Number: 858382 Size: MF

Engine Block - Left Side View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 10 x 1.5

211

212

n/a

213

214

420

33

1.3

27

1.063

2

M 6 x 1

201

202

n/a

203

204

205

22

0.866

18

0.709

3

M 12 x 1.75

856

857

n/a

858

859

416

33

1.3

17

0.669

4

M 8x 1.25

206

207

n/a

208

209

210

25

0.985

20

0.788

5

M 28x 1.25

n/a

n/a

n/a

n/a

n/a

n/a

25

0.985

17

0.669

6

M 24 x 1.5

n/a

n/a

n/a

n/a

n/a

n/a

30

1.182

20

0.788

7

M 6 x 1

201

202

n/a

203

204

205

19

0.748

15

0.591

8

M 6 x 1

206

207

n/a

208

209

210

19

0.748

15

0.591

Engine Block - Right Side View
Object Number: 858385 Size: MF

Engine Block - Right Side View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 16 x 1.5

n/a

n/a

n/a

n/a

n/a

n/a

32

1.260

23

0.906

2

M 6 x 1

201

202

n/a

203

204

205

22

0.866

18

0.709

3

M 8 x 1.25

206

207

n/a

208

209

210

23

0.906

18

0.709

4

M 10 x 1.5

211

212

n/a

213

214

420

33

1.300

27

1.063

5

M 16 x 2.0

n/a

n/a

n/a

n/a

n/a

n/a

29

1.142

16

1.024

6

M 10 x 1.5

211

212

n/a

213

214

420

23

0.906

18

0.709

Engine Block - Front View
Object Number: 858387 Size: MF

Engine Block - Front View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 6 x 1

405

n/a

407

203

204

205

30

1.182

26

1.024

2

M 6 x 1

201

202

n/a

203

204

205

18

0.709

14

0.551

3

M 6 x 1

201

202

n/a

203

204

205

22

0.866

18

0.709

4

M 8 x 1.25

206

207

n/a

208

209

210

23

0.906

18

0.709

5

M 16 x 1.5

405

n/a

407

203

204

205

24

0.945

16

0.630

Engine Block - Rear View
Object Number: 858388 Size: MF

Engine Block - Rear View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 16 x 1.5

n/a

n/a

n/a

n/a

n/a

n/a

39

1.536

33

1.300

2

M 10 x 1.5

211

212

n/a

213

214

420

39

1.536

33

1.300

3

M 6 x 1

201

202

n/a

203

204

205

20

0.788

16

0.630

4

M 8 x 1

206

207

n/a

208

209

210

39

1.536

33

1.300

5

M 6 x 1

211

212

n/a

213

214

215

39

1.536

33

1.300

6

M 10 x 1.5

211

212

n/a

213

214

215

57

2.245

54

2.127

Cylinder Head - Top View
Object Number: 858408 Size: MF

Cylinder Head - Top View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 6 x 1

405

n/a

406

203

204

205

28

1.103

24

0.945

2

M 6 x 1

201

202

n/a

203

204

205

THRU

THRU

3

M 6 x 1

201

202

n/a

203

204

205

22

0.866

18

0.709

Cylinder Head - End - Front View
Object Number: 858411 Size: MF

Cylinder Head - End - Front View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 6 x 1

201

202

n/a

203

204

205

28

1.103

22

0.866

2

M 10 x 1.5

211

212

n/a

213

214

215

28

1.103

22

0.866

3

M 24 x 1.5

n/a

n/a

n/a

n/a

n/a

n/a

THRU

THRU

4

M 8 x 1.25

206

207

n/a

208

209

210

28

1.103

23

0.906

Cylinder Head - End - Rear View
Object Number: 858427 Size: MF

Cylinder Head - End - Rear View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 14 x 1.5

409

410

n/a

411

412

413

36

1.418

28

1.103

2

M 10 x 1.5

409

410

n/a

411

412

413

28

1.103

22

0.866

3

M 14 x 1.5

211

212

n/a

213

214

215

36

1.418

28

1.103

4

M 10 x 1.5

211

212

n/a

213

214

215

28

1.103

22

0.866

Cylinder Head - Intake Manifold Deck View
Object Number: 858430 Size: SF

Cylinder Head - Intake Manifold Deck View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 10 x 1.5

211

212

n/a

213

214

420

33

1.3

27

1.063

2

M 10 x 1.5

211

212

n/a

213

214

215

28

1.103

22

0.866

3

M 6 x 1

201

202

n/a

203

204

205

23

0.906

18

0.709

Cylinder Head - Exhaust Manifold Deck View
Object Number: 858431 Size: SF

Cylinder Head - Exhaust Manifold Deck View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 8 x 1.25

206

207

n/a

208

209

210

28

1.103

23

0.906

2

M 6 x 1

201

202

n/a

203

204

205

22

0.866

18

0.709

3

M 6 x 1

405

n/a

406

203

204

205

28

1.103

23

0.906

4

M 10 x 1.5

417

n/a

n/a

418

419

420

53

2.088

45

1.773

Oil Pan - Bottom View
Object Number: 858434 Size: MF

Oil Pan - Bottom View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 8 x 1.25

206

207

n/a

208

209

415

THRU

THRU

Oil Pan - Rear View
Object Number: 858436 Size: MF

Oil Pan - Rear View

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 10 x 1.5

211

212

n/a

213

214

215

THRU

THRU

Engine Front Cover
Object Number: 858437 Size: MF

Engine Front Cover

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 6 x 1

n/a

n/a

n/a

n/a

n/a

n/a

30

1.182

26

1.024

2

M 6 x 1

201

202

n/a

203

204

205

17

0.669

14

0.551

3

M 6 x 1

201

202

n/a

203

204

205

THRU

THRU

Crankshaft Rear Oil Seal Housing
Object Number: 858438 Size: MF

Crankshaft Rear Oil Seal Housing

Service Hole Location

Thread Size

Drill

Counterbore Tool

Stop Collar

Tap

Driver

Insert

Drill Depth (Max)

Tap Depth (Min)

J 42385-400

mm

(in)

mm

(in)

1

M 6 x 1

201

202

n/a

203

204

205

22

0.866

18

0.709