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EnginePart report

2003 Chevrolet Silverado 1500 Engine Problems

Complaints
15about this part
Share
2%of 805 total for the year
Median mileage
129,000miles
Trend
FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

NHTSA recorded 15 complaints about the engine of the 2003 Chevrolet Silverado 1500, 2% of the 805 complaints for this model year. Where a mileage was given, the median is 129,000 miles.

Example complaints

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

“At random times while driving or turning, no matter the weather our truck randomly dies. Shifting into neutral she always starts back up right away.however due to not knowing when it will happen, it does on city streets at 25mph and had on the highway at 75mph. We are unsure still at the moment the cause or solution. We have had 4 episodes of this dangerous problem starting this year only, 2015 .”

NHTSA complaint #10808829, filed 2015-12, 128,000 miles

“I received a reduced engine power message in the middle of the highway I was traveling at 70 MPH and when it came on I couldn't travel more than 35 MPH. I was afraid for my and my passengers life as we was on the verge of being hit. I had the check engine codes checked and received 7 different codes.”

NHTSA complaint #10669892, filed 2015-01, 260,000 miles

“I purchased this vehicle used on march 1 2013 didn't noticed any problems except a slight engine noise. I thought the engine noise was tapping valves, because I was told the truck was not on the road for about a year. When I changed the oil for the first time I noticed that the rear manifold bolt was missing, looked at the other side, that was missing also. I heard I could e-mail you to report a problem so I did.”

NHTSA complaint #10542254, filed 2013-09, 91,200 miles

“I was traveling at approximately 55mph on a smooth paved county road with my A/C on. It was about 78 degrees outside. I had the A/C running about 15 minutes before the air just turned warm. I tried 3 times turning off the A/C and back on, and the air failed to cool. I stopped the truck, turned the A/C on, got out and looked at the A/C compressor. The A/C compressor was not engaging. I took it to a mechanic and the diagnosis was undetermined. 2 other mechanics failed to find the problem as well. …”

NHTSA complaint #10614631, filed 2014-07, 148,591 miles

“I own a 2003 Chevrolet silverado and as I am driving down the road the check engine light comes on as says reduced engine power and I am only able to travel between 20 to 30 MPH and also as I come to a stop light/sign the truck wants to sputter out and die. Everytime I take it to a mechanic shop they tell me its the throttle body and that it needs to be changed but I have already changed it 4 times in the last two years and is not the problem. The problem is constantly happening sometime 3 to 4 times a day.”

NHTSA complaint #10563697, filed 2014-02, 150,230 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
20267458%
20255753%
202414947%
202315339%
202225739%
202139546%
202025133%
201937834%
201810320%
201711416%
2016729%
201513212%
201419113%
20133311%
20122512%
2011407%
2010339%
2009368%
2008445%
2007486%
200672%
2005183%
2004182%
2003152%
200282%
2001112%
2000102%
199961%
199810%
199710%

Other parts of the 2003 Chevrolet Silverado 1500

Brakes
429 complaints
Electrical system
195 complaints
Steering
56 complaints
Vehicle speed control
29 complaints
Fuel system
28 complaints
Body and structure
27 complaints
Transmission and drivetrain
26 complaints
Air bags
21 complaints
Engine cooling
20 complaints
Visibility (wipers, defrost, mirrors)
17 complaints
Other or unknown
14 complaints
Suspension
14 complaints

← All problems reported for the 2003 Chevrolet Silverado 1500

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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