"How reliable is the 2003 Gmc Sierra 1500?"

"Based on 210 NHTSA complaints, the 2003 Gmc Sierra 1500 has a median complaint mileage of 72075 miles. The most common issue is Service Brakes."

"What are common problems with the 2003 Gmc Sierra 1500?"

"The most frequently reported component in NHTSA complaints for the 2003 Gmc Sierra 1500 is Service Brakes, accounting for a significant portion of the 210 total complaints filed."

2003 Gmc Sierra 1500: Reliability Data

Source: NHTSA — 210 complaints

210

Total Complaints

72,075mi

Median Mileage

Service Brakes

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

47,500 25th Percentile

72,075 Median Mileage

100,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

Service Brakes

Instrument Cluster/Panel

Service Brakes, Hydraulic

Antilock/Traction Control/Electronic Limited Slip

Steering

Electrical System

Hoses, Lines/Piping, And Fittings

Fuel System, Gasoline

Air Bags

Power Train

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"I WAS ON MY WAY HOME FROM WORK AND I SMELLED A WEIRD SMELL. I THOUGHT MY AIR CONDITIONING MAY BE MESSING UP SO I TURNED OFF MY AIR AND OPENED MY WINDOW. I STILL SMELLED THE WEIRD SMELL WITH THE WINDOW DOWN SO I ASSUMED IT WAS AN ODOR FROM THE CAR IN FRONT OR JUST GENERALLY OUTSIDE. I NOTICED IN M..."

"DT*: THE CONTACT STATED THAT WHILE DRIVING 15 MPH AND MAKING A RIGHT TURN, THERE WAS A CLUNKING NOISE UNDER THE HOOD, AND A SHAKING IN THE STEERING WHEEL. THE VEHICLE WAS TAKEN TO A SERVICE DEALER, WHERE THE DEALER REMOVED THE SHAFT SECTOR, REGREASED IT, AND REINSTALLED IT."

"DT*: THE CONTACT STATED THAT THE VEHICLE WAS EXPERIENCING UNWARRANTED ANTILOCK BRAKE SYSTEM (ABS) ACTIVATION. THIS CONDITION IS MORE LIKELY TO OCCUR IN ENVIRONMENTALLY CORROSIVE AREAS. THE VEHICLE IS REGISTERED IN MICHIGAN. THE VEHICLE WAS TAKEN TO THE DEALER ON 12/15/06 WHO DETERMINED THAT THE V..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

When Does Each Component Fail?

Median mileage at complaint for top components.

Service Brakes 55 complaints

25th: 70,125 mi Median: 89,862 mi 75th: 113,273 mi

Instrument Cluster/Panel 32 complaints

25th: 62,000 mi Median: 73,500 mi 75th: 80,750 mi

Service Brakes, Hydraulic 32 complaints

25th: 44,300 mi Median: 68,000 mi 75th: 85,770 mi

Antilock/Traction Control/Electronic Limited Slip 11 complaints

25th: 31,000 mi Median: 37,000 mi 75th: 50,000 mi

Steering 11 complaints

25th: 15,000 mi Median: 26,000 mi 75th: 80,845 mi

Where Are Complaints Coming From?

Top states by complaint count.

MI: 24 PA: 19 NY: 16 CA: 12 OH: 11 MD: 11 VA: 11 IL: 9 NC: 8 NJ: 8

Who Files Complaints?

15.2%

Original Owners

84.8%

Second+ Owners

Gmc Sierra 1500 — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
1997	100	80,000	Steering	0
1998	68	80,500	Antilock/Traction Control/Electronic Limited Slip	6
1999	182	108,894	Service Brakes, Hydraulic	10
2000	215	93,000	Service Brakes, Hydraulic	15
2001	171	98,000	Service Brakes	14
2002	192	76,741	Service Brakes	20
2004	253	57,192	Instrument Cluster/Panel	12
2005	218	73,150	Electrical System	6
2006	182	54,400	Service Brakes	12
2007	310	67,500	Air Bags	11
2008	438	75,000	Air Bags	13
2009	278	65,114	Air Bags	5
2010	215	60,000	Air Bags	1
2011	362	56,000	Air Bags	9
2012	143	60,000	Air Bags	7
2013	147	72,000	Unknown Or Other	2
2014	1020	58,500	Steering	39
2015	914	46,000	Service Brakes	29
2016	436	47,417	Service Brakes	14
2017	465	38,900	Power Train	22
2018	405	33,000	Power Train	16
2019	783	10,000	Engine	19
2020	604	15,700	Engine	15
2021	617	43,500	Engine	7
2022	617	39,000	Engine	8
2023	470	20,000	Engine	9
2024	365	15,400	Engine	5
2025	109	16,500	Engine	7
2026	50	-	Engine	0

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28