2018 GMC Sierra 1500 alternator — 2.0L price snapshot
- Low
- $30
- Average
- $103
- High
- $269

Year & trim-specific price guide
A used 2018 GMC Sierra 1500 alternator (2.0L) costs $30 to $269, with a median asking price of $77. Based on 40 priced salvage yard listings across the US, updated Aug 20, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $40–$269 | 26 | |
| Grade BStandard used | $30–$194 | 11 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $75–$75 | 3 |
Median by grade
Median asking price by seller-reported condition grade · $30–$269 overall range
Trim-specific context
This pricing covers the 2.0L variant of the 2018 GMC Sierra 1500 alternator, based on 40 priced listings. Its $77 median is 1% above the 2018 GMC Sierra 1500 alternator overall median of $76.
There is 1 other alternator variant available for the 2018 GMC Sierra 1500.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same year, other trims
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Common questions
Based on 40 priced salvage-yard listings, a used 2018 GMC Sierra 1500 alternator in the 2.0L variant lists between $30 and $269, with a median asking price of $77.
In our current dataset, the 2.0L variant appears only for the 2018 model year.