2021 GMC Terrain transmission control module price snapshot
- Low
- $30
- Average
- $141
- High
- $405
Year-specific price guide
Used 2021 GMC Terrain Transmission Control Module prices
Year-specific used transmission control module pricing for the 2021 GMC Terrain, built from real salvage yard and junkyard listings with condition grade and fitment detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
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.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedSep 21, 2026AS
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.
Part overview
About the 2021 GMC Terrain transmission control module
A used 2021 GMC Terrain transmission control module costs between $30 and $405, with a median of $105 from 1,185 salvage yard listings.
What the transmission control module does, common failure signs, and prices across all vehicles: used transmission control module price guide →
Also known asTCMTransmission ComputerTransmission ModuleTCU
Price summary
A used 2021 GMC Terrain transmission control module costs $30 to $405, with a median asking price of $105. Based on 1,185 priced salvage yard listings across the US, compatible across 2015–2025 (11 model years), updated Sep 21, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$99
Grade B (good)$172
Grade C (fair)$61
USD
Condition comparison
Price by part grade
Grade AClean / low wear$30–$405590 listings
Grade BStandard used$40–$405584 listings
Grade CVisible wear$61–$611 listings
Grade XUngraded$40–$12510 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $30–$405 | 590 | |
| Grade BStandard used | $40–$405 | 584 | |
| Grade CVisible wear | $61–$61 | 1 | |
| Grade XUngraded | $40–$125 | 10 |
Median by grade
Grade price comparison
Grade A$99
Grade B$172
Grade C$61
Ungraded$85
Median asking price by seller-reported condition grade · $30–$405 overall range
Replacement cost
What is the 2021 GMC Terrain transmission control module replacement cost?
- Used part
- $105
- 2021 GMC Terrain median asking price
- Labor
- $95–$300
- 1–2 hours at $95–$150/hr
- Estimated total
- $200–$405
- median used part + labor
Labor is a typical independent-shop range for transmission control module replacement, not a quote for your vehicle; it does not include programming and adaptive relearn procedure. The part price is the live median from the salvage-yard listings on this page. Full transmission control module replacement cost breakdown
Fitment matters
Price by trim & variant
Body Control (BCM), (center console), active noise control (opt NKC)49 listingsInterchange 2018–2021$99$71 – $295
Communication, telematics (opt UE1), (center dash), ID 8493250649 listingsInterchange 2019–2022$105$54 – $305
Communication, telematics (opt UE1), (center dash), ID 8495746449 listingsInterchange 2019–2022$105$54 – $305
Communication, telematics (opt UE1), (center dash), ID 8464434448 listingsInterchange 2019–2020$172$81 – $172
Information-GPS-TV, human machine interface, (center dash), ID 8433177648 listingsInterchange 2018–2021$185$81 – $305
Theft-Locking, keyless entry, (RH quarter panel), ID 1351877246 listingsInterchange 2018–2021$61$40 – $295
Theft-Locking, keyless entry, (RH quarter panel), ID 8418298146 listingsInterchange 2019–2021$125$60 – $295
Door, hands free rear closer, (in tailgate), ID 2327543044 listingsInterchange 2017–2021$171$55 – $405
Information-GPS-TV, human machine interface, (center dash), ID 8433177538 listingsInterchange 2015–2021$103$46 – $305
Information-GPS-TV, human machine interface, (center dash), ID 8454690238 listingsInterchange 2015–2021$103$46 – $305
Year-specific context
How does the 2021 GMC Terrain compare?
The 2021 guide is based on 1,386 observed listings, including 1,185 with posted prices. Its $105 median is 9% above the GMC Terrain guide's $96 median.
Among the 11 model years with current price data, 2021 ranks #8 from lowest to highest median.
Interchange data shows this part is also listed under model years 2015, 2016, 2017, 2018, 2019, 2020, 2022, 2023, 2024, 2025. Shopping across all 11 compatible years may surface better prices or condition grades.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Compare model years
What does a GMC Terrain transmission control module cost in other years?
2025100 listingsCompatible$187$44 – $4072024990 listingsCompatible$72$20 – $40520231,039 listingsCompatible$140$25 – $40520221,968 listingsCompatible$180$25 – $40520201,490 listingsCompatible$105$30 – $40520191,731 listingsCompatible$71$20 – $40520181,222 listingsCompatible$71$20 – $4052017750 listingsCompatible$66$35 – $4052016440 listingsCompatible$76$43 – $3712015700 listingsCompatible$75$25 – $348
Keep browsing this vehicle
What other GMC Terrain parts are priced?
01wide ±172%
AC Compressor
$110median
$35$413
02wide ±163%
ABS Module
$116median
$35$413
03wide ±188%
Air Bag
$241median
$45$950
04wide ±168%
Alternator
$85median
$30$316
05wide ±151%
Axle Shaft
$102median
$34$343
06wide ±194%
Blower Motor
$80median
$20$331
07wide ±264%
Brake Caliper
$55median
$20$310
08wide ±116%
Rear Bumper Assembly
$524median
$153$1,372
09wide ±184%
Front Bumper
$270median
$61$1,055
10wide ±165%
Rear Bumper
$230median
$65$825
11wide ±273%
Car Radio
$106median
$20$599
12wide ±213%
Center Console
$106median
$25$476
13wide ±85%
AC Condenser
$162median
$49$325
14wide ±146%
Control Arm
$84median
$40$285
15
Differential
Price data updating
16wide ±72%
Door Assembly
$946median
$362$1,725
17wide ±169%
Drive Shaft
$193median
$51$705
18wide ±192%
Engine
$1,525median
$300$6,144
19wide ±204%
Engine Computer
$94median
$30$413
20wide ±275%
Exhaust Manifold
$157median
$35$900
21wide ±78%
Fender
$325median
$115$625
22wide ±146%
Fog Light
$100median
$34$325
23wide ±141%
Front Seat
$175median
$67$559
24wide ±135%
Fuel Pump
$125median
$25$362
25wide ±117%
Fuel Tank
$163median
$40$420
26wide ±119%
Grille
$270median
$59$700
27wide ±186%
Headlight Assembly
$386median
$75$1,509
28spread ±22%
Heater Core
$116median
$75$126
29wide ±62%
Hood
$642median
$250$1,044
30wide ±150%
Ignition Switch
$106median
$24$343
31
Instrument Cluster
Price data updating
32wide ±158%
Intake Manifold
$76median
$25$265
33wide ±152%
Master Cylinder
$99median
$30$331
34wide ±207%
Side Mirror
$150median
$25$646
35wide ±193%
Power Steering Pump
$100median
$30$415
36wide ±142%
Quarter Panel
$420median
$206$1,400
37wide ±240%
Radiator
$120median
$25$600
38wide ±170%
Rear View Mirror
$110median
$20$395
39wide ±240%
Starter
$75median
$20$380
40wide ±113%
Steering Column
$168median
$35$413
41wide ±162%
Steering Rack
$145median
$30$500
42wide ±114%
Steering Wheel
$145median
$39$371
43wide ±194%
Strut
$75median
$30$321
44wide ±158%
Sunroof
$200median
$85$715
45wide ±223%
Tail Light
$150median
$25$694
46wide ±108%
Tailgate
$1,400median
$226$3,250
47wide ±197%
Throttle Body
$66median
$20$280
48wide ±75%
Torque Converter
$200median
$100$400
49wide ±286%
Transfer Case
$283median
$80$1,700
50wide ±228%
Transmission
$755median
$150$3,594
51wide ±105%
Turbocharger
$200median
$79$500
52wide ±133%
Water Pump
$50median
$24$157
53wide ±226%
Wheels
$187median
$35$880
54wide ±138%
Window Regulator
$100median
$30$305
Common questions
2021 GMC Terrain transmission control module FAQ
How much is a used 2021 GMC Terrain transmission control module?
Based on 1,185 priced salvage-yard listings, a used 2021 GMC Terrain transmission control module lists between $30 and $405, with a median asking price of $105.
How much does it cost to replace a 2021 GMC Terrain transmission control module?
Using a used part, a 2021 GMC Terrain transmission control module replacement typically runs $200–$405 all-in: the median used transmission control module for this year lists at $105, and independent-shop labor for transmission control module replacement typically takes 1–2 hours at $95–$150/hr ($95–$300). The labor figure does not include programming and adaptive relearn procedure. Labor is a national part-level estimate, not a quote for your vehicle.
Will a 2021 GMC Terrain transmission control module fit another year?
Based on salvage-yard interchange data, listings for the 2021 GMC Terrain transmission control module also appear under model years 2015, 2016, 2017, 2018, 2019, 2020, 2022, 2023, 2024, 2025, suggesting these years share compatible fitments. Always verify the exact part number, drivetrain, trim, and your VIN before buying — interchange compatibility can vary by variant.
How much is a 2021 GMC Terrain tcm?
A tcm is another name for a transmission control module. The prices on this page cover the 2021 GMC Terrain transmission control module — median $105, from 1,185 listings.