2018 GMC Sierra 1500 transmission — AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT) price snapshot
- Low
- $1,900
- Average
- $2,338
- High
- $3,350
Year & trim-specific price guide
Used 2018 GMC Sierra 1500 Transmission — AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT) prices
Trim-specific pricing for the AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT) variant of the 2018 GMC Sierra 1500 transmission, built from 27 real salvage yard listings with condition grade detail.
Price summary
A used 2018 GMC Sierra 1500 transmission (AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT)) costs $1,900 to $3,350, with a median asking price of $2,150. Based on 27 priced salvage yard listings across the US, updated Aug 18, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$2,500
Grade B (good)$2,303
Grade C (fair)$2,000
USD
Condition comparison
Price by part grade
Grade AClean / low wear$2,048–$2,6426 listings
Grade BStandard used$2,303–$2,5523 listings
Grade CVisible wear$2,000–$2,0001 listings
Grade XUngraded$1,900–$3,35017 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $2,048–$2,642 | 6 | |
| Grade BStandard used | $2,303–$2,552 | 3 | |
| Grade CVisible wear | $2,000–$2,000 | 1 | |
| Grade XUngraded | $1,900–$3,350 | 17 |
Median by grade
Grade price comparison
Grade A$2,500
Grade B$2,303
Grade C$2,000
Ungraded$2,150
Median asking price by seller-reported condition grade · $1,900–$3,350 overall range
Trim-specific context
How does the AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT) compare?
This pricing covers the AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT) variant of the 2018 GMC Sierra 1500 transmission, based on 27 priced listings. Its $2,150 median is 19% below the 2018 GMC Sierra 1500 transmission overall median of $2,642.
There are 13 other transmission 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
AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT) in other model years
Same year, other trims
What other 2018 GMC Sierra 1500 transmission variants are available?
(AT), 4x2, 5.3L, 6 speed (opt MYC), w/o tow package
48 listings$2,235$1,455 – $3,662(AT), 4x4, 6.2L, 8 speed (opt M5U)
44 listings$3,055$2,000 – $3,885(AT), 4x4, 5.3L, 8 speed, opt M5U
42 listings$3,640$2,605 – $4,470(AT), 4x4, 5.3L, 8 speed, opt M5X
41 listings$3,170$2,348 – $7,635(AT), 4x2, 4.3L
39 listings$1,600$905 – $2,279(AT), 4x4, 5.3L, 6 speed (opt MYC), w/o tow package
39 listings$2,375$1,785 – $3,350(AT), 4x2, 6.2L, 10 speed (opt MF6)
38 listings$2,675$1,493 – $5,342(AT), 4x4, 4.3L
37 listings$1,599$1,000 – $2,055(AT), 4x2, 5.3L, 8 speed, opt M5U
33 listings$3,012$2,504 – $5,634(AT), 4x4, 6.2L, 10 speed (opt MF6)
33 listings$2,450$1,750 – $4,676(AT), 4x2, 5.3L, 8 speed, opt M5X
32 listings$3,910$1,707 – $6,500(AT), 4x2, 5.3L, 6 speed (opt MYC), tow package (opt NHT)
19 listings$2,338$1,950 – $3,225(AT), 4x2, 6.2L, 8 speed (opt M5U)
10 listings$4,414$2,450 – $5,639Back to full guide
2018 GMC Sierra 1500 transmission — all trims
Common questions
2018 GMC Sierra 1500 transmission (AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT)) FAQ
How much is a used 2018 GMC Sierra 1500 transmission (AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT))?
Based on 27 priced salvage-yard listings, a used 2018 GMC Sierra 1500 transmission in the AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT) variant lists between $1,900 and $3,350, with a median asking price of $2,150.
Which years use the AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT) transmission?
The AT, 4x4, 5.3L, 6 speed (opt MYC), tow package (opt NHT) variant appears in model years 2017, 2018. Prices and availability may differ by year.