GM Service Manual Online
For 1990-2009 cars only
Table 1: Front Compartment
Table 2: Body Side
Table 3: Underbody

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.

Front Compartment


Object Number: 1382184  Size: MF

Front Compartment

Location

Description

Length = x

Width = y

Height = z

Point to Point

1

Hole

1100

314

879

x

2

Hole

1225

689

889

x

3

Strut Attachment Hole

1648

544

934

x

4

Hood Hinge Hole

1829

714

982

x

5

Hood Hinge Hole

1930

714

993

x

6

Air Inlet Grille Attachment Hole

1849

600

975

x

7

Strut Attachment Hole

1648

-544

934

x

8

Air Inlet Grille Attachment Hole

1813

-616

975

x

9

Hood Hinge Hole

1829

-714

982

x

10

Hood Hinge Hole

1930

-714

993

x

11

Hole

1225

-689

889

x

12

Hole

1100

-314

879

x

13

Hood Striker Attachment Hole

1080

-83

869

x

14

Hood Striker Attachment Hole

1018

1

852

x

15

Impact Bar Attachment Hole

946

574

480

x

16

Impact Bar Attachment Hole

924

396

480

x

17

Impact Bar Attachment Hole

946

574

405

x

18

Impact Bar Attachment Hole

924

396

405

x

19

Impact Bar Attachment Hole

924

-396

480

x

20

Impact Bar Attachment Hole

946

-396

480

x

21

Impact Bar Attachment Hole

924

-574

405

x

22

Impact Bar Attachment Hole

946

-574

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

1522

2 to 9

x

x

x

x

1525

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: 1337472  Size: MF

Body Side

Location

Length

a-g

711 mm

a-i

1620 mm

b-f

1056 mm

b-e

1167 mm

b-c

377 mm

c-e

1073 mm

c-f

1116 mm

d-h

2102 mm

e-f

432 mm

e-i

831 mm

f-h

1410 mm

Underbody


Object Number: 1337978  Size: MF

Underbody

Location

Description

Length = x

Width = y

Height = z

Point to Point

a

Hole

979

-486

342

x

b

Hole

1261

-474

287

x

c

Hole

2081

-382

230

x

d

Hole

2192

-600

192

x

f

Hole

3688

-466

205

x

g

Hole

5100

-475

354

x

h

Hole

5100

475

354

x

i

Hole

3688

466

205

x

k

Hole

2192

600

192

x

l

Hole

2081

382

230

x

m

Hole

1261

474

287

x

n

Hole

979

486

342

x

a to g

x

x

x

x

4128 mm

a to e

x

x

x

x

1288 mm

a to j

x

x

x

x

1568 mm

b to l

x

x

x

x

1185 mm

c to m

x

x

x

x

1185 mm

d to f

x

x

x

x

1502 mm

d to i

x

x

x

x

1837 mm

e to i

x

x

x

x

1585 mm

e to n

x

x

x

x

1568 mm

f to g

x

x

x

x

1419 mm

f to j

x

x

x

x

1585 mm

f to k

x

x

x

x

1837 mm

f to h

x

x

x

x

1703 mm

g to i

x

x

x

x

1703 mm

h to i

x

x

x

x

1419 mm

h to n

x

x

x

x

4128 mm

i to k

x

x

x

x

1502 mm

j to n

x

x

x

x

1288 mm