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EnginePart report

2004 Chevrolet Avalanche Engine Problems

Complaints
1about this part
Share
1%of 165 total for the year
Median mileage
136,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 1 complaints about the engine of the 2004 Chevrolet Avalanche, 1% of the 165 complaints for this model year. Where a mileage was given, the median is 136,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

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

“Vehicle started experiencing a gradual coolant loss, found out vehicle has a manufactured faulty cylinder head(s) from castech. Will cost $$$$ to repair. Gm will not address the problem except with GM #06-06-01-019b information on gradual coolant loss over time with no evidence of leak found, (june 12, 2007).”

NHTSA complaint #10644138, filed 2014-10, 136,000 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
201345%
201238%
201197%
201065%
200911%
2008156%
2007246%
200619%
200534%
200411%
200321%
200231%

Other parts of the 2004 Chevrolet Avalanche

Electrical system
60 complaints
Brakes
42 complaints
Transmission and drivetrain
14 complaints
Fuel system
11 complaints
Steering
10 complaints
Air bags
9 complaints
Visibility (wipers, defrost, mirrors)
9 complaints
Body and structure
7 complaints
Suspension
7 complaints
Engine cooling
6 complaints
Vehicle speed control
5 complaints
Other or unknown
3 complaints

← All problems reported for the 2004 Chevrolet Avalanche

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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