Make:

GMC

Model:

C15

Submodel:

BASE

Beginning Year:

1975

Ending Year:

1975

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

Z

Region:

USA

Make:

GMC

Model:

C15

Submodel:

BASE

Beginning Year:

1976

Ending Year:

1976

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

Y

Region:

USA

Make:

GMC

Model:

C15

Submodel:

BASE

Beginning Year:

1976

Ending Year:

1978

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

S

Region:

USA

Make:

GMC

Model:

C15

Submodel:

HEAVY HALF

Beginning Year:

1977

Ending Year:

1978

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

S

Region:

USA

Make:

GMC

Model:

C15

Submodel:

HIGH SIERRA

Beginning Year:

1975

Ending Year:

1975

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

Z

Region:

USA

Make:

GMC

Model:

C15

Submodel:

HIGH SIERRA

Beginning Year:

1976

Ending Year:

1976

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

Y

Region:

USA

Make:

GMC

Model:

C15

Submodel:

HIGH SIERRA

Beginning Year:

1976

Ending Year:

1978

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

S

Region:

USA

Make:

GMC

Model:

C15

Submodel:

INDY HAULER

Beginning Year:

1977

Ending Year:

1977

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

S

Region:

USA

Make:

GMC

Model:

C15

Submodel:

SIERRA CLASSIC

Beginning Year:

1975

Ending Year:

1975

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

Z

Region:

USA

Make:

GMC

Model:

C15

Submodel:

SIERRA CLASSIC

Beginning Year:

1976

Ending Year:

1976

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

Y

Region:

USA

Make:

GMC

Model:

C15

Submodel:

SIERRA CLASSIC

Beginning Year:

1976

Ending Year:

1978

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

S

Region:

USA

Make:

GMC

Model:

C15

Submodel:

SIERRA GRANDE

Beginning Year:

1975

Ending Year:

1975

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

Z

Region:

USA

Make:

GMC

Model:

C15

Submodel:

SIERRA GRANDE

Beginning Year:

1976

Ending Year:

1976

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

Y

Region:

USA

Make:

GMC

Model:

C15

Submodel:

SIERRA GRANDE

Beginning Year:

1976

Ending Year:

1978

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

S

Region:

USA

Make:

GMC

Model:

C15

Submodel:

STREET COUPE

Beginning Year:

1978

Ending Year:

1978

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Application Notes:

Performance; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible, May Not Be Computer Compa; Class 1, Good Idle With Low RPM Torque And Mid Range Performance, May Not Be Computer Compatible

Engine VIN Code:

S

Region:

USA