1999 GMC Suburban

No clear pattern

19.5% of complaints about the 1999 GMC Suburban arrived in its first year of service. That is an unusual figure for a 1999 vehicle, but with only 328 complaints on record the sample is too small to call it a pattern — the margin of error covers the range where ordinary vehicles sit. The figures below are reported without a verdict. The most-reported system is service brakes, hydraulic (117 complaints), typically at 2.8 yr or about 83,000 miles.

Complaints: 328
Median age at failure: 3.4 yr
Median mileage: 75,000 n=114
Crash / fire / tow: 11.6% of reports
Safety recalls: 2

When each system is reported — middle 50% of complaints

System

0y2y4y6y8y10y12y14y

Service brakes, hydraulic

117 reports · 83,000 mi

2.8 yr

12%

Tires

30 reports · 35,000 mi

2.8 yr

13.3%

Engine cooling

24 reports · 71,800 mi

4.3 yr

Steering

22 reports · 71,000 mi

3.8 yr

4.5%

Electrical system

20 reports · 60,595 mi

3.5 yr

15%

Power train

19 reports · 60,667 mi

1.9 yr

15.8%

Fuel system

15 reports · 98,641 mi

3.6 yr

Safety recalls — NHTSA campaigns

06E043000 2006-05-19

Fuel system

CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18, 2005, THROUGH MARCH 21, 2006, SOLD FOR USE ON THE VEHICLES LISTED ABOVE AND ON CERTAIN SCHOOL BUSES. (TO SEE THE SCHOOL BUS ENGINE SIZES, CLICK ON "DOCUMENT SEARCH" AND THEN "BUS APPLICATIONS"). THE CONNECTOR ON THE FUEL FILTER WAS NOT MANUFACTURED TO HONEYWELL'S SPECIFICATION. AS A RESULT, THE O-RING MAY NOT SEAT CORRECTLY ON THE FUEL LINE.

THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. IN THE PRESENCE OF AN IGNITION SOURCE, A FIRE COULD OCCUR.

00V122000 2000-04-27

Seat belts:front:webbing

VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES. THESE VEHICLES DO NOT COMPLY WITH THE OCCUPANT PROTECTION REQUIREMENTS OF FMVSS NO. 208, "OCCUPANT CRASH PROTECTION."

IN THE EVENT OF A VEHICLE CRASH, THE RIGHT FRONT PASSENGER RESTRAINT SYSTEMS MAY NOT MEET THE NECK EXTENSION REQUIREMENTS.

In owners’ own words

Service brakes, hydraulic mileage not reported 1 mo in service

ABS BRAKE FAILURE. ALSO, FRONT DISC BRAKES AND REAR BRAKE DRUMS FAILED.ALSO, VEHICLE PULLS TO LEFT AND THEN RIGHT.

Service brakes, hydraulic mileage not reported 1 mo in service

ABS BRAKE FAILURE. ALSO, FRONT DISC BRAKES AND REAR BRAKE DRUMS FAILED.ALSO, VEHICLE PULLS TO LEFT AND THEN RIGHT.

Service brakes, hydraulic mileage not reported 1 mo in service

ABS BRAKE FAILURE. ALSO, FRONT DISC BRAKES AND REAR BRAKE DRUMS FAILED.ALSO, VEHICLE PULLS TO LEFT AND THEN RIGHT.

Steering mileage not reported 1.3 yr in service

WHILE DRIVING ABOUT 40 MPH STEERING COLUMN TOTALLY CEASED, CAUSING LOSS OF CONTROL. TRUCK WAS TOWED TO A DEALERSHIP. POWER STEERING GEAR WAS REPLACED UNDER WARRANTY. *AK

Other Suburban model years

How to read this

This is what owners reported, not a reliability rating. People file with NHTSA about alarming failures, not routine ones, and complaint volume tracks how many cars were sold.
Failure ages come from the incident date on each complaint, populated on about 83% of records. Mileage is shown where reported — NHTSA’s 2021 system change cut mileage capture to roughly 15%, so it thins out sharply after MY2020.
Every rank compares this vehicle only against others of the same model year. A 2025 car has not had time to accumulate five-year failures, so comparing early-failure share across years is meaningless.
Fourteen make-months distorted by media storms and mass recalls — Toyota in February 2010 ran 11× normal volume across 33 models — are excluded.
Recalls are manufacturer actions and authoritative; complaints are not. A recall listed here may already have been performed on any individual car. Check a specific VIN at nhtsa.gov/recalls.