Used 2020 GMC Sierra 1500 transmission – (AT), 4x4, 5.3L, 6 speed (opt MYC)

Year & trim-specific price guide

Used 2020 GMC Sierra 1500 Transmission — (AT), 4x4, 5.3L, 6 speed (opt MYC) prices

Trim-specific pricing for the (AT), 4x4, 5.3L, 6 speed (opt MYC) variant of the 2020 GMC Sierra 1500 transmission, built from 29 real salvage yard listings with condition grade detail.

2020 GMC Sierra 1500 · (AT), 4x4, 5.3L, 6 speed (opt MYC)

$2,950

median asking price

29 priced listings · $750–$4,500

Price summary

A used 2020 GMC Sierra 1500 transmission ((AT), 4x4, 5.3L, 6 speed (opt MYC)) costs $750 to $4,500, with a median asking price of $2,950. Based on 29 priced salvage yard listings across the US, updated Aug 3, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$3,250
Grade B (good)$2,905
Grade C (fair)$1,575

2020 GMC Sierra 1500 transmission — (AT), 4x4, 5.3L, 6 speed (opt MYC) price snapshot

USD
Low
$750
Average
$2,880
High
$4,500
29 priced listings used · last updated Aug 3, 2026· How we price·

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Reporting price for 2020 GMC Sierra 1500 Transmission ((AT), 4x4, 5.3L, 6 speed (opt MYC))

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Condition comparison

Price by part grade

Grade AClean / low wear$3,200–$3,2503 listings
Grade BStandard used$750–$3,73722 listings
Grade CVisible wear$1,575–$1,5751 listings
Grade XUngraded$2,000–$4,5003 listings

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $750–$4,500 overall range

Trim-specific context

How does the (AT), 4x4, 5.3L, 6 speed (opt MYC) compare?

This pricing covers the (AT), 4x4, 5.3L, 6 speed (opt MYC) variant of the 2020 GMC Sierra 1500 transmission, based on 29 priced listings. Its $2,950 median is 2% above 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 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, 6 speed (opt MYC)

37 listings$2,300$1,597 – $2,800

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

33 listings$3,048$2,425 – $4,090

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

How much is a used 2020 GMC Sierra 1500 transmission ((AT), 4x4, 5.3L, 6 speed (opt MYC))?

Based on 29 priced salvage-yard listings, a used 2020 GMC Sierra 1500 transmission in the (AT), 4x4, 5.3L, 6 speed (opt MYC) variant lists between $750 and $4,500, with a median asking price of $2,950.

Which years use the (AT), 4x4, 5.3L, 6 speed (opt MYC) transmission?

In our current dataset, the (AT), 4x4, 5.3L, 6 speed (opt MYC) variant appears only for the 2020 model year.