1999 GMC Sierra reliability record
Every consumer complaint and recall the U.S. government (NHTSA) has on file for the 1999 GMC Sierra — the repair risk behind the ownership cost.
- NHTSA complaints
- 721
- on record
- Top problem area
- SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
- 197 complaints
- Recalls on record
- 0
- none on record
- Reported harm
- 58 reported crashes · 36 injuries · 1 death · 2 fires
How this record compares
raw NHTSA counts, not defect ratesComplaint rank
#662
of 4,194 vehicle records
Vs GMC median
+473
median 248 across 165 GMC records
Vs 1997-2001
+453
median 268 complaints in 666 records
Top component share
36%
Service Brakes, Hydraulic: 259 complaints
What owners report fails — 1999 GMC Sierra
- SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP 197
- SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE 33
- SERVICE BRAKES, HYDRAULIC 29
- SERVICE BRAKES 25
- STRUCTURE:BODY:TAILGATE:HINGE AND ATTACHMENTS 21
Estimate the 5-year cost to own a 1999 GMC Sierra
A vehicle's complaint record hints at the repair and maintenance budget you'll need. Add your state, purchase price, and mileage to the TCO calculator for the full picture.
Open TCO calculatorThese are unverified consumer reports and manufacturer recalls filed with the National Highway Traffic Safety Administration — not validated defect rates, and not adjusted for how many 1999 GMC Sierra units were produced or sold. High-volume and older vehicles naturally accumulate more complaints. Use this as one research signal, not a verdict on any individual vehicle. Data as of 2026. Source: NHTSA Office of Defects Investigation (public domain).
Frequently asked questions
Is the 1999 GMC Sierra reliable?
NHTSA has 721 consumer complaints on record for the 1999 GMC Sierra. The most-reported problem area is service brakes, hydraulic:antilock/traction control/electronic limited slip (197 reports). These are unverified consumer reports filed with the government, not validated failure rates, and are not adjusted for how many 1999 GMC Sierra units were produced — popular vehicles naturally accumulate more reports.
What are the most common problems with the 1999 GMC Sierra?
Owners most often report problems with: service brakes, hydraulic:antilock/traction control/electronic limited slip (197), service brakes, hydraulic:antilock/traction control/electronic limited slip:control unit/module (33), service brakes, hydraulic (29), service brakes (25). Each figure is the number of complaints filed with NHTSA for this exact model year.
How much does it cost to own a 1999 GMC Sierra?
Ownership cost depends on your state taxes, insurance, fuel, and the maintenance the vehicle's reliability record implies. Use the CarOutlay 5-year TCO calculator to estimate the full cost including the repair risk this complaint record suggests.