Year & trim-specific price guide

Used 2018 Cadillac CTS Transmission — AT, 3.6L, VIN S (8th digit, opt LGX), RWD prices

Trim-specific pricing for the AT, 3.6L, VIN S (8th digit, opt LGX), RWD variant of the 2018 Cadillac CTS transmission, built from 12 real salvage yard listings with condition grade detail.

SKWritten bySaurabh Kumar · Co-Founder & CTO

Saurabh Kumar

Co-Founder & CTO, Part Price Guide

Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.

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ASReviewed byAmbika Sharma · Co-Founder & COO

Ambika Sharma

Co-Founder & COO, Part Price Guide

12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.

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Last updatedOct 6, 2026

2018 Cadillac CTS · AT, 3.6L, VIN S (8th digit, opt LGX), RWD

$1,198

median asking price

12 priced listings · $499–$1,500

Price summary

A used 2018 Cadillac CTS transmission (AT, 3.6L, VIN S (8th digit, opt LGX), RWD) costs $499 to $1,500, with a median asking price of $1,198. Based on 12 priced salvage yard listings across the US, updated Oct 6, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$1,248

Grade B (good)$848

2018 Cadillac CTS transmission — AT, 3.6L, VIN S (8th digit, opt LGX), RWD price snapshot

USD

Low: $499
Average: $1,045
High: $1,500

12 priced listings used · last updated Oct 6, 2026· How we price·

Condition comparison

Price by part grade

Grade AClean / low wear$499–$1,5008 listings

Grade BStandard used$848–$8481 listings

Grade XUngraded$747–$1,2003 listings

Grade	Price range	Listings
Grade AClean / low wear	$499–$1,500	8
Grade BStandard used	$848–$848	1
Grade XUngraded	$747–$1,200	3

Median by grade

Grade price comparison

Grade A$1,248

Grade B$848

Ungraded$850

Median asking price by seller-reported condition grade · $499–$1,500 overall range

Trim-specific context

How does the AT, 3.6L, VIN S (8th digit, opt LGX), RWD compare?

This pricing covers the AT, 3.6L, VIN S (8th digit, opt LGX), RWD variant of the 2018 Cadillac CTS transmission, based on 12 priced listings. Its $1,198 median is 72% above the 2018 Cadillac CTS transmission overall median of $695.

There are 5 other transmission variants available for the 2018 Cadillac CTS.

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, 3.6L, VIN S (8th digit, opt LGX), RWD in other model years

All years

201946 listings$1,348$685 – $2,440 201729 listings$1,552$850 – $2,074 201618 listings$1,400$850 – $2,074

Same year, other trims

What other 2018 Cadillac CTS transmission variants are available?

AT, 6.2L (supercharged)

2 listings$4,605$4,414 – $4,605

Back to full guide

2018 Cadillac CTS transmission — all trims

View 2018 guide

Common questions

2018 Cadillac CTS transmission (AT, 3.6L, VIN S (8th digit, opt LGX), RWD) FAQ

How much is a used 2018 Cadillac CTS transmission (AT, 3.6L, VIN S (8th digit, opt LGX), RWD)?

Based on 12 priced salvage-yard listings, a used 2018 Cadillac CTS transmission in the AT, 3.6L, VIN S (8th digit, opt LGX), RWD variant lists between $499 and $1,500, with a median asking price of $1,198.

Which years use the AT, 3.6L, VIN S (8th digit, opt LGX), RWD transmission?

The AT, 3.6L, VIN S (8th digit, opt LGX), RWD variant appears in model years 2016, 2017, 2018, 2019. Prices and availability may differ by year.