2003 MODEL COVERAGE

MODEL

BODY CODE

ENGINE (RPO CODE) ⁽¹⁾

ENGINE ID

FUEL SYSTEM

IGNITION SYSTEM

Alero

2.2L (L61)

SFI

DIS

.....

3.4L (LA1)

SFI

DIS

Aurora

4.0L (L47)

SFI

DIS

Bonneville

3.8L (L36)

SFI

DIS

.....

3.8L (L67)

SFI ⁽²⁾

DIS

Cavalier

2.2L (L61/KL6) ⁽³⁾

SFI

DIS

Century

3.1L (LG8)

SFI

DIS

Corvette

5.7L (LS1)

SFI

DIS

.....

5.7L (LS6)

SFI

DIS

DeVille

4.6L (LD8)

TPI-SFI

DIS

.....

4.6L (L37)

TPI-SFI

DIS

Grand Am

2.2L (L61)

SFI

DIS

.....

3.4L (LA1)

SFI

DIS

Grand Prix

3.1L (LG8)

SFI

DIS

.....

3.8L (L36)

SFI

DIS

.....

3.8L (L67)

SFI ⁽²⁾

DIS

Impala

3.4L (LA1)

SFI

DIS

.....

3.8L (L36)

SFI

DIS

Ion

.....

2.2L (L61)

SFI

DIS

LeSabre

3.8L (L36)

SFI

DIS

Malibu

3.1L (LG8)

SFI

DIS

Monte Carlo

3.4L (LA1)

SFI

DIS

.....

3.8L (L36)

SFI

DIS

Park Avenue

3.8L (L36)

SFI

DIS

.....

3.8L (L67)

SFI ⁽²⁾

DIS

Regal

3.8L (L36)

SFI

DIS

.....

3.8L (L67)

SFI ⁽²⁾

DIS

Saturn ("L" Series)

2.2L (L61)

SFI

DIS

.....

3.0L (L81)

SFI

DIS

Seville

4.6L (LD8)

TPI-SFI

DIS

.....

4.6L (L37)

TPI-SFI

DIS

Sunfire

2.2L (L61)

SFI

DIS

Vibe

.....

1.8L (LV6)

SFI

DIS

Vibe GT

.....

1.8L (LNK)

SFI

DIS

⁽¹⁾	Engine code is stamped on engine block. See ENGINE CODE LOCATION .

⁽²⁾	Supercharged engine.

⁽³⁾	Bi-Fuel engine.

Fig 1: VIN Character Position & Definition

Courtesy of GENERAL MOTORS CORP.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Engine/VIN Breakdown: Notes

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?