GM Service Manual Online
For 1990-2009 cars only
Table 1: Front Compartment Dimensions
Table 2: Body Rear Dimensions
Table 3: Body Side Dimensions
Table 4: Underbody Dimensions
Table 5: Clearance and Flushness Specifications

Three Dimensional Distance -- X, Y, Z

This universal measuring system is capable of simultaneously dimensioning the length, width, and height of a datum plane. Three dimensional distances are used for both underbody and upperbody measuring.

X = Fore and aft measurements along the center line of the vehicle. An O plane is located forward of the master gage hole at the front of the vehicle 2185 mm as shown. All measurements are made from this plane toward the rear of the vehicle.

Y = Cross car dimensions. Positive values are measured from the center of the vehicle to the right side of the vehicle. Negative values are measured from the center of the vehicle to the left side. When values are not listed separately to change the side of the vehicle, you need only to change the Y dimensions to the opposite value, + or -, from what is listed.

Z = Vertical measurement from the datum plane that is 368 mm below the rocker panel lower flange edge (O plane).

All dimensions are symmetrical, unless otherwise noted.

In order to properly repair the spaceframe, restore the vehicle to the XYZ dimensions, as originally built. Relational (linear) dimensions are for reference only. Use relational dimensions for diagnosis or inspection only. Relational dimensions are not as accurate as XYZ dimensions and measuring systems.

The gage holes shown are the actual fixture locations that are used to build the vehicle.

Thermal Expansion


Object Number: 929301  Size: MF

Saturn chose thermal plastic exterior body panels for their strategic advantage. Unique to this technology is the need to manage thermal expansion.

Thermal expansion allows exterior panels, e.g. fender, door quarter, to grow and contract with changes in temperature. The method in which the exterior body controls and directs this expansion is through a carefully engineered fastener system and exterior panel design. This panel design consists of a series of net and slotted holes to direct this growth. The growth is directed forward for the fender and rearward for the quarter panels. The growth of the doors is forward for the front door and rearward for the rear door.

Front Compartment


Object Number: 930931  Size: LF

Front Compartment Dimensions

Location

Description

Length = x

Width = y

Height = z

Point to Point

1

Hood Bumper Hole

1184

649

882

x

2

Hole

1225

686

889

x

3

Strut Attachment Hole

1648

544

934

x

4

Hood Hinge Hole

1829

714

978

x

5

Hood Hinge Hole

1930

714

9989

x

6

Air Inlet Grille Attachment Hole

1849

600

975

x

7

Strut Attachment Hole

1948

- 544

934

x

8

Air Inlet Grille Attachment Hole

1813

-616

975

x

9

Hood Hinge Hole

1829

- 714

978

x

10

Hood Hinge Hole

1930

- 714

989

x

11

Hole

1225

- 689

889

x

12

Hood Bumper Hole

1184

- 649

882

x

13

Hood Striker Attachment Hole

1080

-83

869

x

14

Hood Striker Attachment Hole

1018

- 1

852

x

15

Impact Bar Attachment Hole

921

- 396

480

x

16

Impact Bar Attachment Hole

943

- 574

480

x

17

Impact Bar Attachment Hole

943

- 574

405

x

18

Impact Bar Attachment Hole

921

- 396

405

x

19

Impact Bar Attachment Hole

921

- 396

480

x

20

Impact Bar Attachment Hole

943

- 574

480

x

21

Impact Bar Attachment Hole

943

- 574

405

x

22

Impact Bar Attachment Hole

921

- 396

405

x

15 to 20

x

x

x

x

1143

18 to 21

x

x

x

x

787

2 to 11

x

x

x

x

1380

4 to 11

x

x

x

x

1527

2 to 9

x

x

x

x

1527

All dimensions are measured from a zero line, a center line, and a common datum. All dimensions are symmetrical unless otherwise specified.

Body Rear


Object Number: 931330  Size: LF

Body Rear Dimensions

Location

Description

Length = x

Width = y

Height = z

Point to Point

1

Roof Attachment Hole

2744

- 335

1525

x

2

Hole

x

x

x

x

3

Hole

3161

546

1569

x

4

Hole

x

x

x

x

5

Hole

3790

546

1594

x

6

Hole

4335

546

1595

x

7

Roof Attachment Hole

x

x

x

x

8

Lift Gate Attachment Hole

x

x

x

x

9

Lift Gate Attachment Hole

x

x

x

x

10

Lift Gate Attachment Hole

x

x

x

x

11

Lift Gate Attachment Hole

x

x

x

x

12

Lift Gate Striker Attachment Hole

5063

19

628

x

13

Lift Gate Striker Attachment Hole

5052

-19

624

x

14

Impact Bar Attachment Hole

5102

-449

483

x

15

Impact Bar Attachment Hole

5103

-449

403

x

16

Impact Bar Attachment Hole

5084

-570

483

x

17

Impact Bar Attachment Hole

5089

-571

407

x

18

Hole

4200

-540

1595

x

19

Hole

3715

-540

1595

x

20

Hole

3100

-540

1564

x

21

Hole

2744

-335

1525

x

From 3 to 21

x

x

x

x

1081

From 3 to 19

x

x

x

x

1496

From 6 to 21

x

x

x

x

1635

From 6 to 19

x

x

x

x

1084

From 3 to 6

x

x

x

x

1157

From 19 to 21

x

x

x

x

1171

From 5 to 20

x

x

x

x

1082

All dimensions are measured from a zero line, a center line, and a common datum. All dimensions are symmetrical unless otherwise specified.

Body Side


Object Number: 925815  Size: MF

Body Side Dimensions

Location

Description

Length = x

Width = y

Height = z

Point to Point

1

Plug

2110

757

875

x

2

Applique Attachment Hole

2400

674

1226

x

3

Applique Attachment Hole

2639

642

1405

x

4

Die Mark

3100

591

1503

x

5

Notch

3335

606

1526

x

6

Die Mark

3480

589

1530

x

7

Die Mark

3900

595

1534

x

8

Hole

4152

643

1526

x

9

Hole

4813

673

1400

x

10

Hole

4918

733

1182

x

11

Hole

4380

777

1085

x

12

Hole

4078

704

1358

x

13

Die Mark

3805

725

450

x

14

Die Mark

3330

725

480

x

15

Rear Hinge Attachment Hole

3256

782

493

x

16

Rear Hinge Attachment Hole

3278

782

926

x

17

Hole

3290

757

1095

x

18

Rear Hinge Attachment Hole

3243

782

928

x

19

Rear Hinge Attachment Hole

3221

782

495

x

20

Die Mark

3000

725

395

x

21

Die Mark

2426

725

384

x

22

Front Hinge Attachment Hole

2229

762

875

x

23

Hole

2150

765

296

x

From 6 to 13

x

x

x

x

1125

From 7 to 15

x

x

x

x

1224

From 4 to 21

x

x

x

x

1314

From 2 to 20

x

x

x

x

1023

From 2 to 21

x

x

x

x

839

From 5 to 23

x

x

x

x

1701

From 8 to 10

x

x

x

x

842

All dimensions are measured from a zero line, a center line, and a common datum. All dimensions are symmetrical unless otherwise specified.

Underbody


Object Number: 934942  Size: MF

Underbody Dimensions

Location

Description

Length = x

Width = y

Height = z

Point to Point

1

Rear Cradle Mount Hole

1065

- 480

341

x

2

Hole

2080

- 382

232

x

3

Hole

2192

- 600

196

x

4

Hole

2404

- 414

197

x

5

Hole

3277

- 466

204

x

6

Hole

3800

- 466

153

x

7

Hole

4300

- 466

409

x

8

Hole

4943

- 475

356

x

9

Hole

4943

475

356

x

10

Hole

4300

466

409

x

11

Hole

3800

466

153

x

12

Hole

3277

466

204

x

13

Hole

2404

414

197

x

14

Hole

2192

600

196

x

15

Rear Cradle Mount Hole

2081

382

232

x

16

Hole

1065

480

341

x

All dimensions are measured from a zero line, a center line, and a common datum. All dimensions are symmetrical unless otherwise specified.

Clearance and Flushness Specifications


Object Number: 929788  Size: MF

Clearance and Flushness Specifications

Location

Description

Clearance Gap

Flushness

1

Front fascia to hood

6.5-9.5 mm (0.25-0.38 in)

--

2

Front fascia to fender

1.0-3.0 mm (0.04-0.12 in)

-1.5 to 1.5 mm (-0.06 to 0.06 in)

3

Front fender to hood

6.5-9.5 mm (0.25-0.38 in)

--

4

Front fender to front door

4.50-7.5 mm (0.18-0.30 in)

-1.5 to 1.5 mm (-0.06 to 0.06 in)

5

Front door panel to rocker panel

4.0-10.0 mm (0.16-0.39 in)

--

6

Front door panel to rear door panel

5.0-8.0 mm (0.2-0.31 in)

-1.5 to 1.5 mm (-0.06 to 0.06 in)

7

Front door applique to rear door applique

6.5+3/-1 mm (0.26+0.12/0.04 in)

-1.5 to 1.5 mm (-0.06 to 0.06 in)

8

Rear door panel to rocker

4.0-10.0 mm (0.16-0.39 in)

--

9

Rear door panel to quarter panel

4.5-7.5 mm (0.18-0.30 in)

-1.5 to 1.5 mm (-0.06 to 0.06 in)

10

Quarter panel to rear fascia

1.0-3.0 mm (0.04-0.12 in)

-1.5 to 1.5 mm (-0.06 to 0.06 in)

11

Lift gate to rear fascia

6.0-10.0 mm (0.24-0.39 in)

--

12

Lift gate to roof panel

6.0-10.0 mm (0.24-0.39 in)

0+1/-2 mm (0+0.0.4/0.08 in)

13

Tail lamp to lift gate

4.0-8.0 mm (0.16-0.31 in)

0-4.0 mm (0.00-0.16 in)

14

Tail lamp to rear fascia

0-4.0 mm (0.00-0.16 in)

--

15

Tail lamp to quarter panel

0.5-3.5 mm (0.02-0.14 in)

0-3.0 mm (0-0.12 in)