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EnginePart report

2004 Chevrolet Monte Carlo Engine Problems

Complaints
23about this part
Share
10%of 230 total for the year
Median mileage
119,295miles
Trend
FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

NHTSA recorded 23 complaints about the engine of the 2004 Chevrolet Monte Carlo, 10% of the 230 complaints for this model year. Where a mileage was given, the median is 119,295 miles. 1 of these say a crash was involved and 5 a fire, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I took my car in to tom henry Chevrolet on may 19, 2016 to have recall number 14574 performed. I previously had no oil leak from this valve cover, but took it in only because of the recall. Mileage to time of repair was 117748...current mileage, at time of photo, is 119295. The photo shows the gasket protruding out from under the valve cover to the left of the bolt, and oil on the block and exhaust. Such a simple procedure, screwed up by incompetent dealership!!!! Now, I have a problem!!!!”

NHTSA complaint #10889174, filed 2016-07, 119,295 miles

“I took my car into Freeland Chevrolet for the recall my car was running great,when i picked it up it was idling rough and smoking on my way home it was stalling out at every stop causing me to loose control of power steering and braking creating a safty haszard called them the next day and told them about it which they already knew because the manager was outside when i started it up. They said it was thowing 11codes when i brought it in saying that was the problem,which i could not have drove it their in that condition and never would.got in touch with corp office. …”

NHTSA complaint #11704820, filed 2025-12

“The contact owns a 2004 Chevrolet Monte Carlo. The contact stated that the front and rear engine valve covers were faulty causing oil to leak from the engine. The local dealer miller and sons (3107 green garden rd. Aliquippa pa) and the manufacturer was notified of the failure but no assistance was offered. The failure mileage was 100,000.”

NHTSA complaint #11308317, filed 2020-02, 100,000 miles

“The contact owns a 2004 Chevrolet Monte Carlo. The contact received notification of NHTSA campaign number: 15v201000 (engine and engine cooling). The recall called for the replacement of the front valve cover only, even though the rear valve cover was leaking at the time. The vehicle was not repaired. The failure mileage was 75,000.”

NHTSA complaint #10821111, filed 2016-01, 75,000 miles

“The contact owned a 2004 Chevrolet Monte Carlo. While the vehicle was parked in the garage, the contact noticed that the garage was on fire. The fire department extinguished the fire. A fire report was filed. The vehicle was destroyed. The VIN was included in NHTSA campaign number: 15v201000 (engine, engine cooling). The manufacturer was not notified of the failure. The approximate failure mileage was 138,000. Updated 04/14/16”

NHTSA complaint #10821561, filed 2016-01, 138,000 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
200725%
200665%
200543%
20042310%
20033220%
20023817%
20014817%
20002812%
199997%
199866%
199611%

Other parts of the 2004 Chevrolet Monte Carlo

Electrical system
151 complaints
Steering
16 complaints
Brakes
14 complaints
Exterior lighting
12 complaints
Engine cooling
7 complaints
Other or unknown
6 complaints
Vehicle speed control
6 complaints
Equipment
5 complaints
Seats
5 complaints
Suspension
5 complaints
Visibility (wipers, defrost, mirrors)
4 complaints
Air bags
3 complaints

← All problems reported for the 2004 Chevrolet Monte Carlo

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology