2003 Chevrolet Silverado 1500 engine problems
15 owner complaints filed with NHTSA name the engine on the 2003 Chevrolet Silverado 1500 — 2% of all complaints for this model year.
What owners report
“My engine has been giving me lean condition codes p0171, p0174 and truck is lacking performance really bad and coolant problems too please message me back”
filed May 18, 2021
“Tl* the contact owns a 2003 chevrolet silverado 1500. While driving 70 mph, the check engine and reduce engine power warning indicators illuminated. The contact stated that turning the vehicle off and back on resolved the issue. The vehicle was taken to the dealer to be diagnosed. The mechanic was…”
filed Dec 5, 2016
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
03-06-01-023I · Service Bulletin/Repair Instructions · issued Dec 18, 2024This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
03-06-01-023H · Service Bulletin/Repair Instructions · issued Oct 7, 2024
Engine problems in other Silverado 1500 years
| Year | Reports | Share |
|---|---|---|
| 2026 Silverado 1500 | 38 | 60% |
| 2025 Silverado 1500 | 40 | 48% |
| 2024 Silverado 1500 | 128 | 46% |
| 2023 Silverado 1500 | 134 | 38% |
| 2022 Silverado 1500 | 221 | 38% |
| 2021 Silverado 1500 | 350 | 45% |
| 2020 Silverado 1500 | 230 | 33% |
| 2019 Silverado 1500 | 351 | 33% |
| 2018 Silverado 1500 | 99 | 19% |
| 2017 Silverado 1500 | 114 | 16% |
| 2016 Silverado 1500 | 71 | 9% |
| 2015 Silverado 1500 | 129 | 12% |
Other reported problem areas on the 2003 Chevrolet Silverado 1500
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.