1999 GMC Sierra 1500 Fuel system Problems
- Complaints
- 7about this part
- Share
- 4%of 158 total for the year
- Median mileage
- 184,894miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the fuel system of the 1999 GMC Sierra 1500, 4% of the 158 complaints for this model year. Where a mileage was given, the median is 184,894 miles. 1 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I am the original owner of a 1999 Gmc sierra that just had brake line failure on 7/14/16 on the interstate that caused an acccident. I had complete loss of brakes, pedal to the floor. I used low gear and park brake to minimize damage but still made contact. It is currently at patriot buick Gmc in williamsburg va for repair where I bought it new. I feel me having to pay $1000+ for the brake line repair and now a court date and insurance issues that are not my fault. We need to discuss Gmc making some restitution as there is no rust anywhere else and this truck has only been in va. …”
NHTSA complaint #10888028, filed 2016-07, 218,000 miles“I noticed a strong odor of gas coming from under the truck. I only noticed the fuel leaking when the truck was on a downhill grade. I climbed under the truck to see where it was coming from. It turns out that the fuel leak is coming from the return line on the frame under where the fuel filter is attached. That section of the fuel line is totally corroded and fuel is slowly dripping from it. I am taking it to my mechanic tomorrow for repair. The brake line right above the fuel line is also severely corroded. …”
NHTSA complaint #10428204, filed 2011-10, 172,789 miles“The first time I bought the vehicle it overflowed fuel when I filled the fuel tank to it's capacity. I assumed a vent line was loose, but knew it would be a big job to drop the fuel tank and check, so I just limited the amount of fuel I would fill the tank with. On jan 5, 2007, the fuel pump quit working and after dropping the tank no vent line was found to be loose. Upon further investigation, I determined the fuel pump mounting flange on the tank was about half connected, thus where the fuel would leak from when the tank was filled to capacity. …”
NHTSA complaint #10178075, filed 2007-01, 8,500 miles“Brakes completely failed,footpedal went down floor. While driving in residential area.. Brake fluid found leaking.had towed truck ,brake lines rusted thru and had 4 complete lines replaced for the second time ..I have owned truck since 1999. Last brake line replaced in 2015. The other item was fuel pump failed on the way to work and truck would not start.had to have vehicle towed at midnight and fuel pump replaced.”
NHTSA complaint #10884768, filed 2016-07, 210,000 miles“Severe corrosion of the brake lines became apparent during a sudden application of the brakes which caused multiple brake lines to rupture and leave the vehicle with no brakes since a line from the master cylinder to the ABS unit front left input and the ABS to the rear t line blew simultaneously. When removing the damaged brake lines they literally crumbled to pieces due to corrosion. During the repair to the brake lines severe corrosion was noted on the fuel lines also.”
NHTSA complaint #10368888, filed 2010-11, 197,000 milesRelated service bulletins
- 10209734Mar 22, 2022This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 10165331Jul 3, 2019This SKU is a Preformed Fuel Line. The customer communication requested return of unsold inventory to inspect for damage to the braided hose and crimps. Damaged braided hoses and…
- 10160637Apr 4, 2019This Preliminary Information communication provides information to the technician about a customer?s request to remove or disable the Bi-Fuel Compressed Natural Gas system…
- 10034428Feb 1, 2010Chevrolet:gmc: engineering information-fuel tank pressure sensor, dtcs p0446, p0451 or p0454 set. Gmc engineering is attempting to determine the root cause of the above concern.
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 11 | 7% |
| 2025 | 7 | 6% |
| 2024 | 22 | 6% |
| 2023 | 38 | 8% |
| 2022 | 32 | 5% |
| 2021 | 42 | 7% |
| 2020 | 27 | 6% |
| 2019 | 27 | 4% |
| 2018 | 11 | 4% |
| 2017 | 7 | 2% |
| 2016 | 9 | 3% |
| 2015 | 13 | 2% |
| 2014 | 15 | 2% |
| 2012 | 3 | 3% |
| 2011 | 12 | 4% |
| 2010 | 6 | 4% |
| 2009 | 11 | 5% |
| 2008 | 5 | 1% |
| 2007 | 5 | 2% |
| 2006 | 8 | 6% |
| 2005 | 5 | 3% |
| 2004 | 9 | 4% |
| 2003 | 7 | 4% |
| 2002 | 1 | 1% |
| 2001 | 17 | 12% |
| 2000 | 14 | 8% |
| 1999 | 7 | 4% |
| 1998 | 4 | 7% |
| 1997 | 9 | 11% |
| 1996 | 1 | 20% |
| 1994 | 1 | 8% |
Other parts of the 1999 GMC Sierra 1500
103 complaintsSeats
10 complaintsBody and structure
9 complaintsElectrical system
8 complaintsSuspension
7 complaintsEngine cooling
6 complaintsOther or unknown
6 complaintsSteering
4 complaintsSeat belts
3 complaintsTires
3 complaintsAir bags
2 complaintsTransmission and drivetrain
2 complaints
← All problems reported for the 1999 GMC Sierra 1500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology