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#BS-1999-GMCSIE-6AFC

1999 Gmc Sierra

Based on reports from 721 owners and 9 recalls for this exact model.

Complaints

721

Crashes

Fires

Recalls

TSBs

229

🛑

Preliminary Verdict

Red Flag

Based on 721 complaints, 58 crashes, 2 fires, and 9 recalls.

See full verdict with buy/skip conditions

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Mechanic Inspection Checklist

!Check the Service Brakes, Hydraulic:antilock/traction Control/electronic Limited SlipHIGH

197 owners reported service brakes, hydraulic:antilock/traction control/electronic limited slip issues — failures commonly reported around 64K miles.

!Inspect the BrakesMED

Look for symptoms of wear and premature failure

+ 6 more items in full checklistUnlock

Failure Timeline by Mileage

0–30K

101

30–60K

60–90K

90–120K

120–150K

150K+

Peak failure range: 30–60K miles (101 reports) • Median: 64K miles

Full report: which components fail at each mileageUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip (197 reports).

Includes fuel costs, common repairs, and recall riskUnlock

Also in your report

Owner Intelligence

AI-synthesized themes from real complaints

Buyer Lot Checklist

Questions, test drive checks, walk-away triggers

Negotiation Talking Points

Data-backed dollar deductions

Buy / Skip Verdict

Final recommendation with conditions

10 sections total in the full reportUnlock all

Where the complaints fall

Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip197 (27%)

Brakes61 (8%)

Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module33 (5%)

Wheels & Tires22 (3%)

Structure:body:tailgate:hinge And Attachments21 (3%)

Seats20 (3%)

Vehicle Speed Control:accelerator Pedal20 (3%)

Power Train:automatic Transmission19 (3%)

1999 Gmc Sierra: Known Issues & Problem Areas

Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip Issues

Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip complaints account for 27% of all reports filed for the 1999 Gmc Sierra, with 197 owners filing complaints with NHTSA. The median mileage at time of complaint is 64,000 miles, suggesting issues tend to surface around the 64K-mile mark.

Brakes Issues

Brakes complaints account for 8% of all reports filed for the 1999 Gmc Sierra, with 61 owners filing complaints with NHTSA. Owners should pay attention to brakes-related symptoms during test drives and pre-purchase inspections.

Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module Issues

Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module complaints account for 5% of all reports filed for the 1999 Gmc Sierra, with 33 owners filing complaints with NHTSA. Owners should pay attention to service brakes, hydraulic:antilock/traction control/electronic limited slip:control unit/module-related symptoms during test drives and pre-purchase inspections.

Wheels & Tires Issues

Wheels & Tires complaints account for 3% of all reports filed for the 1999 Gmc Sierra, with 22 owners filing complaints with NHTSA. Owners should pay attention to wheels & tires-related symptoms during test drives and pre-purchase inspections.

Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.

Complaint trend by year

111

118

102

Complaints filed with NHTSA by year for the 1999 Gmc Sierra. Recent trend: decreasing.

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Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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Recall History (9 recalls)

00V345000Feb 2001

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS

VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES. SOME OF THESE VEHICLES HAVE A CLEARANCE CONDITION BETWEEN THE FRONT RIGHT-HAND BRAKE PIPE AND THE BODY CROSS SILL THAT COULD DECREASE TO THE POINT OF ALLOWING CONTACT DURING THE LIFE OF THE VEHICLE. IF CONTACT OCCURS AND THE BRAKE PIPE BECOMES DAMAGED, IN HALF OF THE BRAKE SYSTEM THERE CAN BE A LOSS OF BRAKE FLUID AND PRESSURE. THE BRAKE WARNING LAMP WILL BE ACTIVATED WHEN THE BRAKE FLUID LEVEL REACHES THE INDICATOR LIMIT.

00X001000

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER

THIS IS NOT A SAFETY RECALL IN ACCORDANCE WITH THE SAFETY ACT. HOWEVER, IT IS DEEMED A SAFETY IMPROVEMENT CAMPAIGN BY THE AGENCY. VEHICLE DESCRIPTION: 1/2 TON LIGHT DUTY PICKUP TRUCKS. ON CERTAIN TRUCKS, FAILURE TO FOLLOW THE SERVICE PROCEDURE SET FORTH IN THE SERVICE MANUAL FOR REMOVAL OF THE FRONT BRAKE CALIPER CAN RESULT IN MOVEMENT OF THE FRONT BRAKE HOSE RELATIVE TO ITS KNUCKLE MOUNTING BRACKET. IF THIS MOVEMENT RESULTS IN INCREASED LENGTH BETWEEN THE BRACKET AND THE BANJO FITTING THAT ATTACHES TO THE BRAKE CALIPER, IT IS POSSIBLE FOR THE BRAKE HOSE TO COME IN CONTACT WITH THE WHEEL RIM.

04E022000Mar 2004

EQUIPMENT

AFTERMARKET PICKUP TRUCK OVER-THE-RAIL BEDLINERS MANUFACTURED FOR INSTALLATION ON 1999-2004 CHEVROLET SILVERADO AND GMC SIERRA PICKUP TRUCKS. THE TOGGLE WING ASSEMBLY USED TO ATTACH THE BEDLINER TO THE TRUCK BED IS NOT ENGAGING FULLY IN THE STAKE POCKET OF THE PICKUP TRUCK.

05V161000Jul 2005

PARKING BRAKE

ON CERTAIN PICKUP TRUCKS EQUIPPED WITH MANUAL TRANSMISSIONS AND BUILT WITH EITHER PBR PARKING BRAKE SYSTEMS OR TRW PARKING BRAKE SYSTEMS, THE PARKING BRAKE FRICTION LININGS MAY WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.

05V379000Sep 2005

SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP

CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES MAY EXPERIENCE UNWANTED ANTILOCK BRAKE SYSTEM (ABS) ACTIVATION. THIS CONDITION IS MORE LIKELY TO OCCUR IN ENVIRONMENTALLY CORROSIVE AREAS. THIS RECALL WILL BE LAUNCHED IN THE "SALT BELT" STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MARYLAND, MASSACHUSETTS, MAINE, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN AND THE DISTRICT OF COLUMBIA ONLY.

+ 4 more recalls in the full report

Recall severity analysis & seller scripts

The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.

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1999 Gmc Sierra vs. Class Average (Standard Pickup Trucks 2WD)

This vehicle

721

Class avg

840

Complaint volume is roughly in line with other standard pickup trucks 2wd vehicles from 1999.

Complaint counts correlate with sales volume — popular vehicles naturally generate more reports. The full report normalizes for this.

About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 721 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 9 recalls found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

Other Gmc Sierra Model Years

2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976

View all Gmc Sierra years →

1999 Gmc Sierra: Frequently Asked Questions

What is the most common problem with the 1999 Gmc Sierra?

The most commonly reported issue with the 1999 Gmc Sierra is related to the service brakes, hydraulic:antilock/traction control/electronic limited slip, with 197 complaints filed with NHTSA.

Is the 1999 Gmc Sierra reliable?

The 1999 Gmc Sierra has 721 complaints, 58 crash reports, and 2 fire reports filed with NHTSA. The full report analyzes whether these numbers indicate real risk or are proportional to the vehicle’s popularity.

How much does it cost to fix 1999 Gmc Sierra problems?

Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.

Does the 1999 Gmc Sierra have any recalls?

Yes, the 1999 Gmc Sierra has 9 recalls on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.

What mileage do Gmc Sierra problems start?

Based on 274 complaints with mileage data, the median mileage at time of complaint is 64,000 miles. The highest concentration of reported issues occurs in the 30–60K mile range. The full report breaks down exactly which components fail at each mileage bracket.

What’s in the full report?

10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.

How is this different from free NHTSA data?

NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.

How is this different from Carfax?

Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.

What if the report isn’t useful?

100% money-back guarantee. If the report doesn’t help you make a more informed decision, we’ll refund you — no questions asked.

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10 sections of AI analysis based on 721 owner reports. Know before you buy.

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