Used 2020 GMC Sierra 1500 transmission – (AT), 4x2, 5.3L, 6 speed (opt MYC)

Year & trim-specific price guide

Used 2020 GMC Sierra 1500 Transmission — (AT), 4x2, 5.3L, 6 speed (opt MYC) prices

Trim-specific pricing for the (AT), 4x2, 5.3L, 6 speed (opt MYC) variant of the 2020 GMC Sierra 1500 transmission, built from 37 real salvage yard listings with condition grade detail.

2020 GMC Sierra 1500 · (AT), 4x2, 5.3L, 6 speed (opt MYC)

$2,300

median asking price

37 priced listings · $1,597–$2,800

Price summary

A used 2020 GMC Sierra 1500 transmission ((AT), 4x2, 5.3L, 6 speed (opt MYC)) costs $1,597 to $2,800, with a median asking price of $2,300. Based on 37 priced salvage yard listings across the US, updated Aug 3, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$2,324
Grade B (good)$2,330

2020 GMC Sierra 1500 transmission — (AT), 4x2, 5.3L, 6 speed (opt MYC) price snapshot

USD
Low
$1,597
Average
$2,219
High
$2,800
37 priced listings used · last updated Aug 3, 2026· How we price·

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Condition comparison

Price by part grade

Grade AClean / low wear$1,950–$2,35013 listings
Grade BStandard used$1,597–$2,55716 listings
Grade CVisible wearUpdating
Grade XUngraded$1,800–$2,8008 listings

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $1,597–$2,800 overall range

Trim-specific context

How does the (AT), 4x2, 5.3L, 6 speed (opt MYC) compare?

This pricing covers the (AT), 4x2, 5.3L, 6 speed (opt MYC) variant of the 2020 GMC Sierra 1500 transmission, based on 37 priced listings. Its $2,300 median is 20% below the 2020 GMC Sierra 1500 transmission overall median of $2,883.

There are 11 other transmission variants available for the 2020 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), 4x2, 5.3L, 6 speed (opt MYC) in other model years

All years
202142 listings$2,450$1,850 – $3,150

Same year, other trims

What other 2020 GMC Sierra 1500 transmission variants are available?

(AT), 4x2, 2.7L

44 listings$3,125$550 – $4,355

(AT), 4x4, 2.7L

43 listings$3,020$2,400 – $5,275

(AT), 4x4, 5.3L, 8 speed (opt MQE)

41 listings$3,487$2,650 – $5,102

(AT), 4x4, 4.3L

41 listings$1,940$1,350 – $2,850

(AT), 4x4, 3.0L

40 listings$3,400$1,800 – $5,342

(AT), 4x4, 5.3L, 10 speed (opt MQB)

38 listings$3,247$600 – $4,787

(AT), 4x4, 6.2L

38 listings$3,247$600 – $4,787

(AT), 4x2, 4.3L

37 listings$1,808$1,350 – $2,787

(AT), 4x2, 5.3L, 8 speed (opt MQE)

33 listings$3,048$2,425 – $4,090

(AT), 4x4, 5.3L, 6 speed (opt MYC)

29 listings$2,950$750 – $4,500

(AT), 4x2, 3.0L

28 listings$2,698$1,750 – $5,000

Back to full guide

2020 GMC Sierra 1500 transmission — all trims

View 2020 guide

Common questions

2020 GMC Sierra 1500 transmission ((AT), 4x2, 5.3L, 6 speed (opt MYC)) FAQ

How much is a used 2020 GMC Sierra 1500 transmission ((AT), 4x2, 5.3L, 6 speed (opt MYC))?

Based on 37 priced salvage-yard listings, a used 2020 GMC Sierra 1500 transmission in the (AT), 4x2, 5.3L, 6 speed (opt MYC) variant lists between $1,597 and $2,800, with a median asking price of $2,300.

Which years use the (AT), 4x2, 5.3L, 6 speed (opt MYC) transmission?

The (AT), 4x2, 5.3L, 6 speed (opt MYC) variant appears in model years 2020, 2021. Prices and availability may differ by year.