2021 GMC Canyon alternator — diesel price snapshot
- Low
- $49
- Average
- $126
- High
- $395
Year & trim-specific price guide
Used 2021 GMC Canyon Alternator — diesel prices
Trim-specific pricing for the diesel variant of the 2021 GMC Canyon alternator, built from 36 real salvage yard listings with condition grade detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedSep 20, 2026AS
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
Price summary
A used 2021 GMC Canyon alternator (diesel) costs $49 to $395, with a median asking price of $99. Based on 36 priced salvage yard listings across the US, updated Sep 20, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$143
Grade B (good)$138
Grade C (fair)$80
USD
Condition comparison
Price by part grade
Grade AClean / low wear$49–$39522 listings
Grade BStandard used$61–$23311 listings
Grade CVisible wear$80–$801 listings
Grade XUngraded$60–$802 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $49–$395 | 22 | |
| Grade BStandard used | $61–$233 | 11 | |
| Grade CVisible wear | $80–$80 | 1 | |
| Grade XUngraded | $60–$80 | 2 |
Median by grade
Grade price comparison
Grade A$143
Grade B$138
Grade C$80
Ungraded$80
Median asking price by seller-reported condition grade · $49–$395 overall range
Trim-specific context
How does the diesel compare?
This pricing covers the diesel variant of the 2021 GMC Canyon alternator, based on 36 priced listings. Its $99 median is 21% above the 2021 GMC Canyon alternator overall median of $82.
There are 2 other alternator variants available for the 2021 GMC Canyon.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same trim, other years
diesel in other model years
Same year, other trims
What other 2021 GMC Canyon alternator variants are available?
Back to full guide
2021 GMC Canyon alternator — all trims
Common questions
2021 GMC Canyon alternator (diesel) FAQ
How much is a used 2021 GMC Canyon alternator (diesel)?
Based on 36 priced salvage-yard listings, a used 2021 GMC Canyon alternator in the diesel variant lists between $49 and $395, with a median asking price of $99.
Which years use the diesel alternator?
The diesel variant appears in model years 2016, 2017, 2018, 2019, 2020, 2021, 2022. Prices and availability may differ by year.