Vacuum Diagrams: Identification

1989 GENERAL MOTORS VACUUM DIAGRAM REFERENCE CHART

Engine (VIN)

Body

Trans.

Fuel System

Figure

2.0L (M)

Federal

⁽¹⁾ J & N

All

PFI

Figure

Calif.

⁽¹⁾ J & N

All

Turbo

Figure

2.3L (D)

Federal

⁽¹⁾ N

All

PFI

Figure

Calif.

⁽¹⁾ N

All

PFI

Figure

2.5L (R & U)

Federal

⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾ A & N

All

TBI

Figure

Calif.

⁽¹⁾⁽²⁾⁽³⁾⁽⁴⁾ A & N

All

TBI

Figure

3.3L (N)

⁽¹⁾⁽²⁾⁽⁴⁾ A & N

⁽⁵⁾

⁽¹⁾	Pontiac models.

⁽²⁾	Buick models.

⁽³⁾	Chevrolet models.

⁽⁴⁾	Oldsmobile models.

⁽⁵⁾	Information not available.

VACUUM DIAGRAM REFERENCE CHART

Engine & VIN Code

Body Style

Emissions

Trans. Type

Fuel System

See Fig.

2.5L (151") 4-Cyl. (VIN R)

⁽²⁾⁽⁴⁾ W

California

All

TBI

2.8L (173") V6 (VIN W)

A, L & W ⁽¹⁾⁽³⁾⁽⁴⁾

Federal & California

Auto.

PFI

2.8L (173") V6 (VIN W)

W ⁽¹⁾⁽²⁾⁽⁴⁾

Federal & California

Auto.

PFI

2.8L (173") V6 (VIN W)

⁽¹⁾⁽⁴⁾ W

Federal & California

Manual

PFI

3.1L (189") V6 (VIN T)

⁽¹⁾ A & W

Federal & California

Auto.

PFI

⁽¹⁾	Pontiac models.

⁽²⁾	Buick models.

⁽³⁾	Chevrolet models.

⁽⁴⁾	Oldsmobile models.

GENERAL MOTORS DESIGNATIONS

Body Designation	Model
W Body	Cutlass Supreme, Grand Prix, Regal