Used GMC Sierra 1500 transmission – AT, 4x2, 4.3L

Trim-specific price guide

GMC Sierra 1500 Transmission — AT, 4x2, 4.3L prices

Pricing for the AT, 4x2, 4.3L variant of the GMC Sierra 1500 transmission, aggregated from 147 salvage yard listings across 4 model years.

2017 GMC Sierra 1500 · AT, 4x2, 4.3L

$1,805

median asking price

27 priced listings · $1,248–$3,400

Price summary

A used GMC Sierra 1500 transmission (AT, 4x2, 4.3L) costs $350 to $3,400, with a median asking price of $1,808. Based on 147 priced salvage yard listings across the US, updated Sep 9, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$2,248
Grade B (good)$1,808
Grade C (fair)$1,000

GMC Sierra 1500 transmission — AT, 4x2, 4.3L price snapshot

USD
Low
$350
Average
$1,899
High
$3,400
147 priced listings across 4 model years· How we price·

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Reporting price for GMC Sierra 1500 Transmission (AT, 4x2, 4.3L)

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Condition comparison

Price by part grade

Grade AClean / low wear$350–$2,78741 listings
Grade BStandard used$905–$2,69775 listings
Grade CVisible wear$1,000–$1,0001 listings
Grade XUngraded$1,350–$3,40030 listings

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $350–$3,400 overall range

Trim-specific context

How is the AT, 4x2, 4.3L priced differently?

This pricing covers the AT, 4x2, 4.3L variant of the GMC Sierra 1500 transmission, based on 147 priced listings across 4 model years (2017, 2018, 2020, 2021). Its $1,808 median is 28% below the GMC Sierra 1500 transmission overall median of $2,528.

Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.

Price by model year

What does a AT, 4x2, 4.3L cost by year?

201727 listings$1,805$1,248 – $3,400201839 listings$1,600$905 – $2,279202037 listings$1,808$1,350 – $2,787202144 listings$2,145$350 – $2,866

Other trims

Other GMC Sierra 1500 transmission variants

Full Sierra 1500 guide

AT, 4x2, 6.2L, (8 speed transmission, opt M5U)

1 yr$2,688$2,299 – $3,910

AT, 4x4, 6.2L, (8 speed transmission, opt M5U)

1 yr$2,200$1,800 – $3,978

AT, 4x2, 5.3L, 6 speed (opt MYC), tow package (opt NHT)

2 yrs$2,500$1,950 – $3,225

AT, 4x2, 5.3L, 6 speed (opt MYC), w/o tow package

2 yrs$2,400$790 – $3,662

AT, 4x2, 5.3L, 8 speed, opt M5U, ID 5U0L

1 yr$2,688$2,338 – $3,910

AT, 4x2, 5.3L, 8 speed, opt M5U, ID 5UFL

1 yr$2,760$2,210 – $3,910

AT, 4x2, 5.3L, 8 speed, opt M5U, ID 5UHL

1 yr$2,760$2,210 – $3,910

AT, 4x2, 5.3L, 8 speed, opt M5U, ID 6U2L

1 yr$3,910$2,650 – $4,145

AT, 4x2, 5.3L, 8 speed, opt M5U, ID 6U7L

1 yr$3,910$2,199 – $5,639

Common questions

GMC Sierra 1500 transmission (AT, 4x2, 4.3L) FAQ

How much is a used GMC Sierra 1500 transmission (AT, 4x2, 4.3L)?

Based on 147 priced salvage-yard listings across 4 model years, a used GMC Sierra 1500 transmission in the AT, 4x2, 4.3L variant lists between $350 and $3,400, with a median asking price of $1,808.

Which GMC Sierra 1500 years use the AT, 4x2, 4.3L transmission?

The AT, 4x2, 4.3L variant appears in model years 2017, 2018, 2020, 2021. Prices and availability differ by year.

Is there a price difference between AT, 4x2, 4.3L condition grades?

Yes. Grade A has a median of $2,248, Grade B has a median of $1,808, Grade C has a median of $1,000. Grade A parts are in excellent condition, B is good, and C is fair.