1999 GMC Sierra 3500 Electrical system Problems
- Complaints
- 1about this part
- Share
- 5%of 19 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the electrical system of the 1999 GMC Sierra 3500, 5% of the 19 complaints for this model year.
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.
“The check engine light came on and vehicle began to run roughly and stall, the vehicle was inspected and dealer found negative temperature signals, consumer has experienced problems on six occasions where the engine would stall and run rough, and has had various componets replaced, such as radiator coolant, coolant sensor, fuel pump, sending unit assembly, distributor, fuel injectors, spark plugs, wires, serpentine belt, throttle-positioning sensor, EGR and oxygen sensor, the bracket that protects the main wire harness was never installed from the factory and consumer feels this was the…”
NHTSA complaint #563678, filed 2001-10Related service bulletins
- 10237671May 19, 2023This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 1 | 20% |
| 2025 | 3 | 18% |
| 2024 | 16 | 31% |
| 2023 | 4 | 14% |
| 2022 | 7 | 22% |
| 2021 | 4 | 20% |
| 2020 | 9 | 18% |
| 2019 | 3 | 23% |
| 2018 | 2 | 14% |
| 2017 | 3 | 23% |
| 2016 | 2 | 11% |
| 2015 | 6 | 19% |
| 2014 | 1 | 14% |
| 2013 | 1 | 7% |
| 2012 | 2 | 22% |
| 2011 | 2 | 10% |
| 2009 | 1 | 20% |
| 2008 | 1 | 4% |
| 2007 | 2 | 13% |
| 2005 | 3 | 13% |
| 2004 | 5 | 21% |
| 2003 | 1 | 14% |
| 2001 | 1 | 3% |
| 2000 | 1 | 4% |
| 1999 | 1 | 5% |
| 1998 | 1 | 8% |
Other parts of the 1999 GMC Sierra 3500
9 complaintsBody and structure
3 complaintsTires
3 complaintsEngine cooling
2 complaintsSeats
2 complaintsAir bags
1 complaintsFuel system
1 complaints
← All problems reported for the 1999 GMC Sierra 3500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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