1999 GMC Sierra 3500: common problems

Owners of the 1999 GMC Sierra 3500 filed 19 complaints with NHTSA, most often about service brakes and structure. Details by component below, with sources.

Key figures

Owner complaints: 19
involving a crash: 1

What fails most often

1 Service brakes 47% of all complaints
2 Structure 16% of all complaints
3 Tires 16% of all complaints
4 Engine and cooling 11% of all complaints
5 Seats 11% of all complaints
6 Air bags 5% of all complaints
7 Electrical system 5% of all complaints
8 Fuel system 5% of all complaints

Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Service brakes: 9 complaints (47% of all).
Structure: 3 complaints (16% of all).
Tires: 3 complaints (16% of all).
Engine and cooling: 2 complaints (11% of all).
Seats: 2 complaints (11% of all), 1 of them with a crash reported by the owner.

Symptoms owners describe

How many of the 19 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

rust, corrosion4 · 21%
tires: bulges, blowouts3 · 16%
fuel system, fuel smell1 · 5%
smoke, burning smell, fire1 · 5%
stalls while driving1 · 5%
warning lights, check engine1 · 5%

Components owners complain about

Component	Owner complaints	involving a crash
Service brakes	9	0
Structure	3	0
Tires	3	0
Engine and cooling	2	0
Seats	2	1
Air bags	1	0
Electrical system	1	0
Fuel system	1	0

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

I was traveling home on fwy where I was involved in a chain reaction auto accident . I was the number 3 out of a total of 6 involved. I struck the car in front at appox 5 miles an hour. Was then rear ended by a suv going approx 30 miles an hour. When rearended, my drivers seat collapsed.
Seats · crash · 2000-10-20 · NHTSA complaint #733750
First brake line rusted out in 2005. Second line from front to back rusted and broke 2008. Fuel line rusted and leaked gas all over my driveway 2010. Today that same truck? Is in a repair shop because the frame by the steeringbox and passenger side front rusted and cracked.
Service brakes · 2014-05-05 · NHTSA complaint #10586534
Every hydraulic brake line on my 75,000-mile 1999 gmc 3500 pickup has rusted out, and had to be replaced. They all blew out when pedal pressure was applied...including one time, when I was backing up at the transfer station to unload trash. The entire truck could have gone back and fallen into the dumpster.
Service brakes · 2010-04-16 · NHTSA complaint #10326017
My 1999 gmc sierra 3500 crew cab was ordered new. I discovered later that it was fitted with a 1998 cab. The design is different and the front doors are longer and heavier resulting in premature hinge failures.
Structure · 2007-02-01 · NHTSA complaint #10181290
Fuel tank under negative pressure by apparent stuck valve caused fuel tank rupture. Happened twice. Gm engineers said no defect, apparently there is and no further communication would be provided. Fuel spilled out and was very dangerous, in my opinion. I am a degreed (msme) engineer. With an extensive auto background.
Fuel system · 2005-11-01 · NHTSA complaint #10141424
The brake lines were corroded. When the brake pedal was pressed the brake line blew out. Contact lost the front brakes on 4 different occasions, and lost rear brakes only once. Vehicle has not been to a service dealer for repairs. Contact has replaced the brake lines with after market equipment.
Service brakes · 2005-06-20 · NHTSA complaint #10125920
Please take note: it seems that when the city of chicago purchased this van in great numbers and was faced w/this product failure/design defect on all of their municipal vans (police dept., fire dept., streets & sanitation, etc...) gmc provided brand new hinges w/brass bushings at no charge.
Structure · 2005-05-21 · NHTSA complaint #10121793
We have 4 1999 gmc 3500 series long vans used to transport students to various functions. Returning from a field trip (with children) one of the tires suffered a ply separation. The driver did an excellent job of maintaining control and the tire was changed out by our towing service.
Tires · 2003-07-18 · NHTSA complaint #10028586

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

19991
20006
20011
20022
20032
20041
20053
20071
20101
20121
20141

Comparison

By complaint count this model year ranks 8,437 of 36,656 model years in the NHTSA data (top 23% most complained about).

On average one model year of the Sierra 3500 has 19 complaints (31 years in the data). This year has 19, about average.

What to check before buying

Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
Structure. Rails, pillars, panel gaps, signs of pulling or welding.
Tires. Tire age by DOT code, bulges, wear pattern.
Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.

Questions and answers

What are the most common problems with the 1999 GMC Sierra 3500?

Owner complaints to NHTSA most often mention: service brakes, structure, tires. Total complaints: 19. The most frequent symptoms in complaint texts: rust, corrosion (21%), tires: bulges, blowouts (16%), fuel system, fuel smell (5%).

How many service bulletins (TSB) were issued for the 1999 GMC Sierra 3500?

NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 1999 GMC Sierra 3500 from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 1999 models

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.