Used 2021 GMC Sierra 1500 transmission – (AT), 4x4, 3.0L

Year & trim-specific price guide

Used 2021 GMC Sierra 1500 Transmission(AT), 4x4, 3.0L prices

Trim-specific pricing for the (AT), 4x4, 3.0L variant of the 2021 GMC Sierra 1500 transmission, built from 30 real salvage yard listings with condition grade detail.
Price summary

A used 2021 GMC Sierra 1500 transmission ((AT), 4x4, 3.0L) costs $850 to $4,177, with a median asking price of $2,792. Based on 30 priced salvage yard listings across the US, updated Aug 8, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$2,851
Grade B (good)$2,724
Grade C (fair)$850

2021 GMC Sierra 1500 transmission — (AT), 4x4, 3.0L price snapshot

USD
Low
$850
Average
$2,680
High
$4,177
30 priced listings used · last updated Aug 8, 2026· How we price·

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Condition comparison

Price by part grade

Grade AClean / low wear$2,000$3,0007 listings
Grade BStandard used$1,000$4,17718 listings
Grade CVisible wear$850$8501 listings
Grade XUngraded$3,680$3,6804 listings

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $850$4,177 overall range

Trim-specific context

How does the (AT), 4x4, 3.0L compare?

This pricing covers the (AT), 4x4, 3.0L variant of the 2021 GMC Sierra 1500 transmission, based on 30 priced listings. Its $2,792 median is 3% above the 2021 GMC Sierra 1500 transmission overall median of $2,700.

There are 13 other transmission variants available for the 2021 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

(AT), 4x4, 3.0L in other model years

Same year, other trims

What other 2021 GMC Sierra 1500 transmission variants are available?

Back to full guide

2021 GMC Sierra 1500 transmission — all trims

Common questions

2021 GMC Sierra 1500 transmission ((AT), 4x4, 3.0L) FAQ

How much is a used 2021 GMC Sierra 1500 transmission ((AT), 4x4, 3.0L)?

Based on 30 priced salvage-yard listings, a used 2021 GMC Sierra 1500 transmission in the (AT), 4x4, 3.0L variant lists between $850 and $4,177, with a median asking price of $2,792.

Which years use the (AT), 4x4, 3.0L transmission?

The (AT), 4x4, 3.0L variant appears in model years 2020, 2021. Prices and availability may differ by year.