"How reliable is the 1999 Gmc Sierra 3500?"

"Based on 25 NHTSA complaints, the 1999 Gmc Sierra 3500 has a median complaint mileage of 60000 miles. The most common issue is Antilock/Traction Control/Electronic Limited Slip."

"What are common problems with the 1999 Gmc Sierra 3500?"

"The most frequently reported component in NHTSA complaints for the 1999 Gmc Sierra 3500 is Antilock/Traction Control/Electronic Limited Slip, accounting for a significant portion of the 25 total complaints filed."

1999 Gmc Sierra 3500: Reliability Data

Source: NHTSA — 25 complaints

Total Complaints

60,000mi

Median Mileage

Antilock/Traction Control/Electronic Limited Slip

Top Issue

Crash Reports

When Do Complaints Happen?

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

58,000 25th Percentile

60,000 Median Mileage

75,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

Antilock/Traction Control/Electronic Limited Slip

Tread/Belt

Gasoline

Seats

Service Brakes, Hydraulic

Wiring

Hinge And Attachments

Service Brakes

Manifold/Header/Muffler/Tail Pipe

Pads

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"WHEN APPYLING THE ABS BRAKES ON DRY PAVEMENT THE PEDAL NEARLY TRAVELED TO THE FLOOR, CAUSING EXTENDED STOPPING DISTANCE. PLEASE GIVE ANY FURTHER DETAILS. *AK"

"CONSUMER USES VEHICLE FOR EVERYDAY USAGES, AND WHEN THE BRAKES GET HOT IT IS HARD TO STOP VEHICLE. SOMETIMES CONSUMER HAS TO INCREASE THE DISTANCE TO STOP. DEALER HAS BEEN NOTIFIED, AND HAS STATED THAT THEY KNOW OF THE PROBLEM. BUT, HAS NOT FIGURED OUT A SOLUTION TO FIX VEHICLE. DEALER HAS FIXE..."

"BRAKES HAD GONE BAD, AND PADS WERE COMPLETELY GONE ON THE LEFT SIDE. RIGHT SIDE STILL HAD HALF PAD. CONSUMER HAS ALWAYS HAD PROBLEMS STOPPING, AND HAS BEEN COMPLAINING TO DEALER. *AK"

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

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

Where Are Complaints Coming From?

Top states by complaint count.

IL: 5 CA: 3 UT: 2 FL: 2 MA: 2 ID: 2 WY: 1 MI: 1 AZ: 1 PA: 1

Who Files Complaints?

72%

Original Owners

28%

Second+ Owners

Gmc Sierra 3500 — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
2000	30	57,007	Service Brakes, Hydraulic	3
2001	44	61,580	Antilock/Traction Control/Electronic Limited Slip	3
2002	29	101,000	Service Brakes	3
2004	29	87,000	Service Brakes	0
2005	29	46,000	Service Brakes	0
2008	26	70,500	Air Bags	0
2011	24	97,500	Air Bags	0
2015	40	43,000	Exterior Lighting	1
2016	27	63,750	Service Brakes	0
2020	72	28,700	Power Train	6
2021	27	-	Power Train	0
2022	37	40,000	Electrical System	6
2023	34	79,000	Power Train	4
2024	58	20,000	Power Train	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