2021 GMC Sierra 1500 transmission control module price snapshot
- Low
- $30
- Average
- $145
- High
- $450
Year-specific price guide
Used 2021 GMC Sierra 1500 Transmission Control Module prices
Year-specific used transmission control module pricing for the 2021 GMC Sierra 1500, 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 updatedAug 24, 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 Sierra 1500 transmission control module
A used 2021 GMC Sierra 1500 transmission control module costs between $30 and $450, with a median of $133 from 1,507 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 Sierra 1500 transmission control module costs $30 to $450, with a median asking price of $133. Based on 1,507 priced salvage yard listings across the US, compatible across 2013–2025 (13 model years), updated Aug 24, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$136
Grade B (good)$125
Grade C (fair)$90
USD
Condition comparison
Price by part grade
Grade AClean / low wear$30–$435847 listings
Grade BStandard used$40–$450618 listings
Grade CVisible wear$60–$902 listings
Grade XUngraded$40–$16240 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $30–$435 | 847 | |
| Grade BStandard used | $40–$450 | 618 | |
| Grade CVisible wear | $60–$90 | 2 | |
| Grade XUngraded | $40–$162 | 40 |
Median by grade
Grade price comparison
Grade A$136
Grade B$125
Grade C$90
Ungraded$80
Median asking price by seller-reported condition grade · $30–$450 overall range
Replacement cost
What is the 2021 GMC Sierra 1500 transmission control module replacement cost?
- Used part
- $133
- 2021 GMC Sierra 1500 median asking price
- Labor
- $95–$300
- 1–2 hours at $95–$150/hr
- Estimated total
- $230–$435
- 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
Driver Assist, camera, (RH cab back panel), opt UVS (360 view, digital camera)50 listingsInterchange 2021–2023$365$250 – $435
Theft-Locking, door lock control (back glass LH frame)48 listingsInterchange 2014–2025$153$30 – $271
Towing Control, (behind LH bumper), trailer lamp control48 listingsInterchange 2021–2023$155$50 – $340
Driver Assist, camera, (RH cab back panel), opt UVN (bed view camera)47 listingsInterchange 2021–2025$149$65 – $297
Communication, (telematics, OnStar, LH dash), ID 8483305546 listingsInterchange 2021–2023$99$56 – $271
Communication, (telematics, OnStar, LH dash), ID 8496756846 listingsInterchange 2021–2023$99$56 – $271
Communication, (telematics, OnStar, LH dash), ID 8512954146 listingsInterchange 2021–2023$99$56 – $271
Communication, (telematics, OnStar, LH dash), ID 8552736646 listingsInterchange 2021–2023$99$56 – $271
Communication, (telematics, OnStar, LH dash), ID 8554326146 listingsInterchange 2021–2023$99$56 – $271
Communication, (telematics, OnStar, LH dash), ID 8681570146 listingsInterchange 2021–2023$99$56 – $271
Theft-Locking, theft deterrent, w/o remote start; (at top of steering column)46 listingsInterchange 2020–2025$65$35 – $335
Theft-Locking, theft deterrent, remote start (opt AVJ), (under floor console)44 listingsInterchange 2021–2024$110$35 – $271
Year-specific context
How does the 2021 GMC Sierra 1500 compare?
The 2021 guide is based on 1,619 observed listings, including 1,507 with posted prices. Its $133 median is 6% above the GMC Sierra 1500 guide's $125 median.
Among the 11 model years with current price data, 2021 ranks #7 from lowest to highest median.
Interchange data shows this part is also listed under model years 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2022, 2023, 2024, 2025. Shopping across all 13 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 Sierra 1500 transmission control module cost in other years?
20251,260 listingsCompatible$120$25 – $47520241,246 listingsCompatible$190$25 – $47520231,200 listingsCompatible$135$30 – $4502022775 listingsCompatible$190$25 – $47520201,799 listingsCompatible$185$27 – $41020192,709 listingsCompatible$101$25 – $44020181,281 listingsCompatible$125$35 – $56020172,033 listingsCompatible$91$25 – $45020161,231 listingsCompatible$110$25 – $38320151,526 listingsCompatible$106$25 – $405
Keep browsing this vehicle
What other GMC Sierra 1500 parts are priced?
01wide ±136%
AC Compressor
$150median
$40$447
02wide ±91%
ABS Module
$201median
$85$450
03wide ±242%
Air Bag
$240median
$40$1,200
04wide ±134%
Alternator
$134median
$35$395
05wide ±122%
Axle Shaft
$165median
$55$456
06wide ±149%
Blower Motor
$85median
$40$294
07wide ±120%
Brake Caliper
$75median
$35$215
08wide ±193%
Rear Bumper Assembly
$644median
$140$2,625
09wide ±132%
Front Bumper
$240median
$85$720
10wide ±168%
Rear Bumper
$505median
$97$1,795
11wide ±173%
Car Radio
$147median
$34$544
12wide ±293%
Center Console
$203median
$35$1,225
13wide ±72%
AC Condenser
$195median
$40$321
14wide ±99%
Control Arm
$145median
$40$327
15
Differential
Price data updating
16wide ±112%
Door Assembly
$716median
$180$1,785
17wide ±167%
Drive Shaft
$243median
$65$878
18wide ±138%
Engine
$4,175median
$1,250$12,735
19wide ±150%
Engine Computer
$137median
$30$440
20wide ±270%
Exhaust Manifold
$71median
$25$408
21wide ±88%
Fender
$504median
$160$1,050
22wide ±123%
Fog Light
$163median
$35$435
23wide ±185%
Front Seat
$247median
$60$975
24wide ±246%
Fuel Pump
$135median
$34$699
25wide ±108%
Fuel Tank
$195median
$55$478
26wide ±105%
Grille
$495median
$159$1,194
27wide ±68%
Headlight Assembly
$875median
$325$1,520
28wide ±155%
Heater Core
$116median
$40$400
29spread ±57%
Hood
$791median
$375$1,275
30wide ±152%
Ignition Switch
$99median
$25$325
31
Instrument Cluster
Price data updating
32wide ±232%
Intake Manifold
$120median
$34$591
33wide ±250%
Master Cylinder
$56median
$25$305
34wide ±186%
Side Mirror
$260median
$59$1,025
35wide ±153%
Power Steering Pump
$136median
$35$450
36wide ±76%
Quarter Panel
$636median
$216$1,185
37wide ±134%
Radiator
$200median
$60$595
38wide ±265%
Rear View Mirror
$100median
$20$550
39wide ±145%
Starter
$95median
$30$305
40wide ±112%
Steering Column
$201median
$50$500
41wide ±94%
Steering Rack
$614median
$217$1,367
42wide ±180%
Steering Wheel
$190median
$40$725
43wide ±129%
Strut
$155median
$50$450
44wide ±153%
Sunroof
$389median
$126$1,320
45wide ±125%
Tail Light
$335median
$60$900
46wide ±239%
Tailgate
$800median
$178$3,995
47wide ±227%
Throttle Body
$77median
$25$375
48spread ±40%
Torque Converter
$450median
$142$500
49wide ±235%
Transfer Case
$378median
$67$1,845
50wide ±75%
Transmission
$2,595median
$1,295$5,204
51wide ±138%
Turbocharger
$675median
$190$2,054
52wide ±171%
Water Pump
$85median
$25$315
53wide ±217%
Wheels
$275median
$55$1,250
54wide ±127%
Window Regulator
$150median
$30$410
Common questions
2021 GMC Sierra 1500 transmission control module FAQ
How much is a used 2021 GMC Sierra 1500 transmission control module?
Based on 1,507 priced salvage-yard listings, a used 2021 GMC Sierra 1500 transmission control module lists between $30 and $450, with a median asking price of $133.
How much does it cost to replace a 2021 GMC Sierra 1500 transmission control module?
Using a used part, a 2021 GMC Sierra 1500 transmission control module replacement typically runs $230–$435 all-in: the median used transmission control module for this year lists at $133, 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 Sierra 1500 transmission control module fit another year?
Based on salvage-yard interchange data, listings for the 2021 GMC Sierra 1500 transmission control module also appear under model years 2013, 2014, 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 Sierra 1500 tcm?
A tcm is another name for a transmission control module. The prices on this page cover the 2021 GMC Sierra 1500 transmission control module — median $133, from 1,507 listings.