2018 GMC Sierra 1500 tail light — All Terrain package (opt GAT), LH price snapshot
- Low
- $100
- Average
- $453
- High
- $693

Year & trim-specific price guide
A used 2018 GMC Sierra 1500 tail light (All Terrain package (opt GAT), LH) costs $100 to $693, with a median asking price of $450. Based on 43 priced salvage yard listings across the US, updated Aug 4, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | Updating | — | |
| Grade BStandard used | Updating | — | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $100–$693 | 43 |
Trim-specific context
This pricing covers the All Terrain package (opt GAT), LH variant of the 2018 GMC Sierra 1500 tail light, based on 43 priced listings. Its $450 median is 89% above the 2018 GMC Sierra 1500 tail light overall median of $238.
There are 9 other tail light variants 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 trim, other years
Same year, other trims
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Common questions
Based on 43 priced salvage-yard listings, a used 2018 GMC Sierra 1500 tail light in the All Terrain package (opt GAT), LH variant lists between $100 and $693, with a median asking price of $450.
The All Terrain package (opt GAT), LH variant appears in model years 2016, 2018. Prices and availability may differ by year.