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The 2004 Chevrolet Monte Carlo Hi-Sport SS is a sleek coupe powered by a supercharged 3.8L V6 engine with an L67 configuration, delivering robust performance. Manufactured by General Motors in Oshawa, Ontario, this vehicle features sequential fuel injection and a manual seat belt system. Equipped with front airbags for both driver and passenger, it offers safety alongside its sporty appeal. This Monte Carlo is a standout in the passenger car segment with its distinctive design and powerful engine.

Decoded VIN:

Make

CHEVROLET

Manufacturer Name

GENERAL MOTORS LLC

Model

Monte Carlo

Model Year

2004

Plant City

OSHAWA #1

Trim

Hi-Sport SS

Vehicle Type

PASSENGER CAR

Plant Country

CANADA

Plant Company Name

NA-GM Corp

Plant State

ONTARIO

Body Class

Coupe

Doors

Gross Vehicle Weight Rating From

Class 1: 6,000 lb or less (2,722 kg or less)

Gross Vehicle Weight Rating To

Class 1: 6,000 lb or less (2,722 kg or less)

Engine Number of Cylinders

Displacement (CC)

3800.0

Displacement (CI)

231.89022755998

Displacement (L)

3.8

Engine Model

L67

Valve Train Design

Overhead Valve (OHV)

Engine Configuration

V-Shaped

Fuel Delivery / Fuel Injection Type

Sequential Fuel Injection (SFI)

Other Engine Info

Supercharged, Name Plate: Chevrolet, Buick

Seat Belt Type

Manual

Front Air Bag Locations

1st Row (Driver and Passenger)

Most common problems:

Oil leaks

V-shaped engines, including the L67, are prone to oil leaks due to the complexity of their design and the number of gaskets and seals that can wear out.

Supercharger issues

The supercharger on the L67 can develop problems such as bearing noise, reduced efficiency, and eventually failure if not properly maintained.

Intake manifold gasket failure

The intake manifold gaskets on the L67 are known to fail, leading to coolant leaks and potential engine overheating.

Ignition coil failure

The L67 often experiences issues with ignition coils, which can cause misfires, rough idling, and reduced performance.

Coolant leaks

Due to the supercharged configuration, there are more potential points for coolant leaks, especially from the lower intake manifold gasket and supercharger assembly.

Harmonic balancer failure

The harmonic balancer in the L67 can deteriorate over time, leading to vibrations and potential engine damage if not replaced.

Fuel injector problems

Fuel injectors in the L67 can get clogged or fail, leading to poor fuel economy, rough running, and performance loss.

Crankshaft position sensor failure

The crankshaft position sensor can fail, causing the engine to stall, misfire, or not start at all.

Worn timing chain

Over time, the timing chain in the L67 can stretch or wear out, leading to timing issues and potential engine damage if not addressed.

Pcv valve issues

A faulty PCV valve can lead to excessive oil consumption, poor engine performance, and increased emissions.

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