GMC C1500 SUBURBAN · model year

1999 GMC C1500 SUBURBAN

19 NHTSA complaints for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 1999GMCC1500 SUBURBAN carries 19 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 1 fire, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.

Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1999 C1500 SUBURBAN is service brakes, hydraulic with 3 filings, followed by electrical system (3) and engine and engine cooling (2). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.

NHTSA currently has 2 investigation files overlapping the 1999 C1500 SUBURBAN. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.

19
Complaints
0
Crashes
1
Fires
0
Injuries
0
Deaths

Total Complaints

19 filings

Crashes Reported

0 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

At or below the fleet median complaint volume.

Complaints by Component

ComponentCount
SERVICE BRAKES, HYDRAULIC3
ELECTRICAL SYSTEM3
ENGINE AND ENGINE COOLING2
ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH1
STEERING1
FUEL SYSTEM, GASOLINE1
STRUCTURE:BODY1
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS1
ELECTRICAL SYSTEM:STARTER ASSEMBLY1
EQUIPMENT:APPLIANCE:AIR CONDITIONER1
LATCHES/LOCKS/LINKAGES:DOORS:LATCH1
AIR BAGS1
SUSPENSION1
UNKNOWN OR OTHER1

Recent Complaints

20170104SUSPENSION

TRANSFER CASE PINHOLE DO TO PUMP IN TRANSFER CASE COMMON PROBLEM

20170104UNKNOWN OR OTHER

TRANSFER CASE PINHOLE DO TO PUMP IN TRANSFER CASE COMMON PROBLEM

20150428FireENGINE AND ENGINE COOLING

TL* THE CONTACT OWNS A 1999 GMC C1500 SUBURBAN. WHILE DRIVING AT APPROXIMATELY 65 MPH, THE OIL FIELD EXPLODED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE FIELD FRACTURED AND CAUSED OIL TO SEEP INTO THE ENGINE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 126,000.

Mileage: 126,000

20140814AIR BAGS

AIRBAG LIGHT IS ON. NEEDS NEW MODULE AND THE PART IS "CURRENTLY UNAVAILABLE" FROM GMC. REPAIR SHOP WILL NOT GUARANTEE WORK ON INSTALLATION OF A THIRD PARTY PART. I HAVE SPOKEN EXTENSIVELY WITH GMC CORPORATE AND THEY CONTINUE TO DELEGATE THIS ISSUE TO THE DEALERSHIP LEVEL. IMO, THE DEALERSHIP (THORSON MOTOR CENTER, PASADENA, CA) HAS DONE ALL THEY CAN BY ORDERING THE PART FOR ME. IF THE PART IS UNAVAILABLE, THAT IS NOT THE DEALERSHIP'S FAULT. FURTHER, THERE IS NO ESTIMATED TIME OF ARRIVAL EVEN THOUGH THE ORDER HAS BEEN EXPEDITED. GMC CORPORATE SHOULD MAKE SURE THEY HAVE SUFFICIENT MANUFACTURERS WHO CAN PRODUCE PARTS IN A TIMELY MANNER. IN THE MEANTIME, MY CAR HAS A SAFETY ISSUE THAT IS UNRESOLVED. THIS PROBLEM HAS BEEN GOING ON FOR OVER SIX WEEKS NOW. *TR

Mileage: 93,000

20140619SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS

TL* THE CONTACT OWNS A 1999 GMC SUBURBAN. THE CONTACT STATED THAT THE BRAKES WERE WEARING PREMATURELY. THE VEHICLE WAS TOWED TO THE DEALER, WHO STATED THAT THE BRAKE LINES, HARDWARE, BRAKE CYLINDER AND CALIPERS NEEDED TO BE REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 99,000 AND THE CURRENT MILEAGE WAS 137,960. ALSO, THE A/C WAS REPAIRED SEVERAL TIMES, AS IT WAS BLOWING OUT HOT AIR, THE REAR PASSENGER DOOR WAS INOPERATIVE, THE STARTER WAS REPLACED, THE RADIATOR WAS LEAKING. UPDATED 07/30/14

Mileage: 99,000

20140619SERVICE BRAKES, HYDRAULIC

TL* THE CONTACT OWNS A 1999 GMC SUBURBAN. THE CONTACT STATED THAT THE BRAKES WERE WEARING PREMATURELY. THE VEHICLE WAS TOWED TO THE DEALER, WHO STATED THAT THE BRAKE LINES, HARDWARE, BRAKE CYLINDER AND CALIPERS NEEDED TO BE REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 99,000 AND THE CURRENT MILEAGE WAS 137,960. ALSO, THE A/C WAS REPAIRED SEVERAL TIMES, AS IT WAS BLOWING OUT HOT AIR, THE REAR PASSENGER DOOR WAS INOPERATIVE, THE STARTER WAS REPLACED, THE RADIATOR WAS LEAKING. UPDATED 07/30/14

Mileage: 99,000

20140619ELECTRICAL SYSTEM:STARTER ASSEMBLY

TL* THE CONTACT OWNS A 1999 GMC SUBURBAN. THE CONTACT STATED THAT THE BRAKES WERE WEARING PREMATURELY. THE VEHICLE WAS TOWED TO THE DEALER, WHO STATED THAT THE BRAKE LINES, HARDWARE, BRAKE CYLINDER AND CALIPERS NEEDED TO BE REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 99,000 AND THE CURRENT MILEAGE WAS 137,960. ALSO, THE A/C WAS REPAIRED SEVERAL TIMES, AS IT WAS BLOWING OUT HOT AIR, THE REAR PASSENGER DOOR WAS INOPERATIVE, THE STARTER WAS REPLACED, THE RADIATOR WAS LEAKING. UPDATED 07/30/14

Mileage: 99,000

20140619EQUIPMENT:APPLIANCE:AIR CONDITIONER

TL* THE CONTACT OWNS A 1999 GMC SUBURBAN. THE CONTACT STATED THAT THE BRAKES WERE WEARING PREMATURELY. THE VEHICLE WAS TOWED TO THE DEALER, WHO STATED THAT THE BRAKE LINES, HARDWARE, BRAKE CYLINDER AND CALIPERS NEEDED TO BE REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 99,000 AND THE CURRENT MILEAGE WAS 137,960. ALSO, THE A/C WAS REPAIRED SEVERAL TIMES, AS IT WAS BLOWING OUT HOT AIR, THE REAR PASSENGER DOOR WAS INOPERATIVE, THE STARTER WAS REPLACED, THE RADIATOR WAS LEAKING. UPDATED 07/30/14

Mileage: 99,000

20140619LATCHES/LOCKS/LINKAGES:DOORS:LATCH

TL* THE CONTACT OWNS A 1999 GMC SUBURBAN. THE CONTACT STATED THAT THE BRAKES WERE WEARING PREMATURELY. THE VEHICLE WAS TOWED TO THE DEALER, WHO STATED THAT THE BRAKE LINES, HARDWARE, BRAKE CYLINDER AND CALIPERS NEEDED TO BE REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 99,000 AND THE CURRENT MILEAGE WAS 137,960. ALSO, THE A/C WAS REPAIRED SEVERAL TIMES, AS IT WAS BLOWING OUT HOT AIR, THE REAR PASSENGER DOOR WAS INOPERATIVE, THE STARTER WAS REPLACED, THE RADIATOR WAS LEAKING. UPDATED 07/30/14

Mileage: 99,000

20140619ENGINE AND ENGINE COOLING

TL* THE CONTACT OWNS A 1999 GMC SUBURBAN. THE CONTACT STATED THAT THE BRAKES WERE WEARING PREMATURELY. THE VEHICLE WAS TOWED TO THE DEALER, WHO STATED THAT THE BRAKE LINES, HARDWARE, BRAKE CYLINDER AND CALIPERS NEEDED TO BE REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 99,000 AND THE CURRENT MILEAGE WAS 137,960. ALSO, THE A/C WAS REPAIRED SEVERAL TIMES, AS IT WAS BLOWING OUT HOT AIR, THE REAR PASSENGER DOOR WAS INOPERATIVE, THE STARTER WAS REPLACED, THE RADIATOR WAS LEAKING. UPDATED 07/30/14

Mileage: 99,000

20140311ELECTRICAL SYSTEM

CAR SHUT OFF IN THE MIDDLE OF DRIVING, THIS HAPPEN ONCE OR TWICE A YEAR OVER A 12 YEAR PERIOD, DEALER KEEP SAYING IT WAS SWITCH OR FUEL PUMP, THEY KEPT CHARGING ME EVERYTIME... *TR

Mileage: 20,000

20140311ELECTRICAL SYSTEM

CAR SHUT OFF WHILE DRIVING, MECHANIC SAID IT WAS ABS COMPUTER, CHARGED ME $1000 TO REPLACE. *TR

Mileage: 150,000

20140311SERVICE BRAKES, HYDRAULIC

CAR SHUT OFF WHILE DRIVING, MECHANIC SAID IT WAS ABS COMPUTER, CHARGED ME $1000 TO REPLACE. *TR

Mileage: 150,000

20140311ELECTRICAL SYSTEM

CAR SHUT OFF WHILE DRIVING ON HIGHWAY. *TR

Mileage: 90,000

20120829STRUCTURE:BODY

WITHIN SEVERAL MONTHS BOTH FRONT DOORS - DRIVERS AND PASSENGERS HANDLES STOPPED WORKING. WITHOUT POWER TO LOWER THE WINDOW AND OPEN THE DOOR FROM THE OUTSIDE, THE OCCUPANTS ARE LOCKED INSIDE. WHEN REPLACING THE PARTS AND INVESTIGATING THE PROBLEM, IT WAS APPARENT THAT BOTH HANDLES BROKE AT THE SAME PLACE AND THE PART MAY BE FAULTY OR NOT SUFFICIENTLY STRENGTHENED TO SUPPORT EXITING THE VEHICLES - ESPECIALLY IN AN EMERGENCY. WE BELIEVE THAT ONLY THE ACTUAL HANDLE IS THE CONCERN AND NOT THE FULL ASSEMBLY. *TR

Mileage: 240,000

20110912SERVICE BRAKES, HYDRAULIC

TL*THE CONTACT OWNS A 1999 GMC C1500 SUBURBAN. THE CONTACT WAS DRIVING APPROXIMATELY 15 MPH WHEN THE BRAKED WERE APPLIED AND THE PEDAL TRAVELED TO THE FLOOR ABNORMALLY. THE VEHICLE FAILED TO STOP AND THE CONTACT IMMEDIATELY ENGAGED THE EMERGENCY BRAKE. THE VEHICLE WAS TOWED TO THE CONTACTS RESIDENCE WHERE THE CONTACT DETECTED BRAKE FLUID LEAKING AND BELIEVED THAT THE FAILURE WAS RELATED TO A FAULTY BRAKE LINE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 135,000.

Mileage: 135,000

20110904FUEL SYSTEM, GASOLINE

I HAVE PURCHASED 2 GMC SUBURBANS OVER THE LAST 13 YEARS. I'M A DIVORCED MOM OF 7 CHILDREN. I WAS DRIVING MY SUBURBAN ALONG WITH MY CHILDREN AND THE VEHICLE STALLED IN THE MIDDLE OF RUSH HOUR TRAFFIC IN BOSTON. *TR I WAS ALMOST HIT FROM BEHIND AND FROM THE RIGHT HAND LANE AS I DESPERATELY TRIED TO STEER THE CAR INTO THE BREAK DOWN LANE. I TURNED MY HAZARDS ON, BUT DURING THIS TIME IN BOSTON, EVERYONE DRIVES OVER THE SPEED LIMIT. IT HAPPENED REPEATEDLY OVER THE NEXT FEW WEEKS. I CONTACTED GMC, IN WHICH I SPOKE TO A REPRESENTATIVE, WHO INFORMED ME I WAS OVER THE RECALL DATE. WHAT???? I EXPLAINED OVER AND OVER HOW DANGEROUS IT WAS FOR ME TO DRIVE THE VEHICLE WITH MY CHILDREN. TO NO AVAIL, I WAS TOLD, MY SUBURBAN MISSED THE RECALL DATES. SORRY, GM COULD NOT STAND BEHIND A LOYAL CUSTOMER. I DO NOT HAVE 2000.00 TO REPLACE THIS PART.

Mileage: 1,080,310

20110307STEERING

GMC SUBURBAN 1999 STEERING SPEED SENSOR FAILS CAUSING THE STEERING TO SUDDENLY JERK WHILE TURNING UNDER SPEED. IT FEELS LIKE THE FRONT WHEELS HIT "SLIPPERY ICE". *TR

Mileage: 172,000

20070103ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH

I CLICKED MY 4-WAY FLASHER BUTTON WHILE DROPPING MY SON OFF AT THE TRAIN STATION AND WHEN I CAME BACK IT WAS DIFFICULT TO PRESS THE BUTTON BACK DOWN. AFTER THAT, THE OPERATION OF MY EMERGENCY FLASHERS WAS INTERMITTENT AND EVENTUALLY MY REAR BRAKES LIGHTS STARTED WORKING ONLY INTERMITTENTLY AS WELL. NOW THE BRAKE LIGHTS DO NOT WORK AND MY GM DEALER SAYS IT WILL COST MORE THAN $500 TO REPLACE THE WHOLE WIRING HARNESS. THIS IS THE SECOND FAILURE OF THIS TYPE ON THIS SAME SUBURBAN. *NM

Mileage: 153,500

Compare 1999GMCC1500 SUBURBAN to Similar Vehicles

NHTSA Investigations

Frequently Asked Questions

How many complaints does the 1999 GMC C1500 SUBURBAN have?
The 1999 GMC C1500 SUBURBAN has 19 NHTSA complaints, 0 crashes, 1 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 1999 GMC C1500 SUBURBAN?
The most-complained component for the 1999 GMC C1500 SUBURBAN is SERVICE BRAKES, HYDRAULIC with 3 complaints. Other frequently reported areas include ELECTRICAL SYSTEM and ENGINE AND ENGINE COOLING.
Is the 1999 GMC C1500 SUBURBAN safe to buy?
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.

Vehicle Safety Guides

Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.