Used 2018 GMC Terrain transmission control module – Differential Lock, (carrier housing)

Year & trim-specific price guide

Used 2018 GMC Terrain Transmission Control Module — Differential Lock, (carrier housing) prices

Trim-specific pricing for the Differential Lock, (carrier housing) variant of the 2018 GMC Terrain transmission control module, built from 12 real salvage yard listings with condition grade detail.

2018 GMC Terrain · Differential Lock, (carrier housing)

$80

median asking price

12 priced listings · $46–$248

Price summary

A used 2018 GMC Terrain transmission control module (Differential Lock, (carrier housing)) costs $46 to $248, with a median asking price of $80. Based on 12 priced salvage yard listings across the US, updated Sep 13, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$73
Grade B (good)$118
Grade C (fair)$69

2018 GMC Terrain transmission control module — Differential Lock, (carrier housing) price snapshot

USD
Low
$46
Average
$87
High
$248
12 priced listings used · last updated Sep 13, 2026· How we price·

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Reporting price for 2018 GMC Terrain Transmission Control Module (Differential Lock, (carrier housing))

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Condition comparison

Price by part grade

Grade AClean / low wear$46–$816 listings
Grade BStandard used$46–$2484 listings
Grade CVisible wear$69–$691 listings
Grade XUngraded$80–$801 listings

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $46–$248 overall range

Trim-specific context

How does the Differential Lock, (carrier housing) compare?

This pricing covers the Differential Lock, (carrier housing) variant of the 2018 GMC Terrain transmission control module, based on 12 priced listings. Its $80 median is 13% above the 2018 GMC Terrain transmission control module overall median of $71.

There are 36 other transmission control module variants available for the 2018 GMC Terrain.

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

Same trim, other years

Differential Lock, (carrier housing) in other model years

All years
202441 listings$76$35 – $305201938 listings$76$46 – $305201732 listings$75$38 – $305201618 listings$66$43 – $305201529 listings$95$43 – $305

Same year, other trims

What other 2018 GMC Terrain transmission control module variants are available?

Body Control (BCM), (center console), active noise control (opt NKC), 2.0L

50 listings$76$66 – $321

Communication, telematics (opt UE1), (center dash), ID 84298328

50 listings$51$41 – $75

Body Control (BCM), (center console), active noise control (opt NKC), 1.5L

49 listings$51$41 – $333

Theft-Locking, theft deterrent, (in console)

49 listings$46$20 – $50

Air Bag, (below center console)

49 listings$51$41 – $336

Theft-Locking, lock, (rear view mirror)

47 listings$41$41 – $162

Body Control (BCM), (center console), body control, ID 13519672

46 listings$51$41 – $331

Communication, telematics (opt UE1), (center dash), ID 84128418

46 listings$75$46 – $249

Theft-Locking, keyless entry, (RH quarter panel)

46 listings$46$46 – $85

Seat, (below LH seat)

42 listings$41$41 – $244

Door, liftgate, (LH quarter panel)

40 listings$75$41 – $171

Driver Assist, rear park assist (opt UD7), (RH quarter panel)

39 listings$66$24 – $153

Information-GPS-TV, human machine interface, (center dash), ID 84331776

38 listings$150$40 – $220

Body Control (BCM), (center console), body control, ID 13594646

36 listings$71$25 – $331

Communication, wireless charger, (center dash), ID 23248791

36 listings$61$41 – $160

Information-GPS-TV, human machine interface, (center dash), ID 84331775

36 listings$111$46 – $245

Body Control (BCM), (center console), active noise control (opt NKC), 1.6L, ID 84281334

35 listings$120$44 – $321

Temperature, ID 84305955

34 listings$90$35 – $220

Temperature, ID 84305957

34 listings$103$40 – $295

Information-GPS-TV, human machine interface, (center dash), ID 84546902

31 listings$111$46 – $245

Temperature, ID 84221979

30 listings$66$50 – $305

Network Gateway, (center dash), (ID 13599318)

29 listings$82$41 – $249

Information-GPS-TV, surround view, (RH quarter panel)

26 listings$126$50 – $240

Transmission, (external trans mounted)

26 listings$99$80 – $331

Fuel Pump, (LH center frame), 1.5L

20 listings$50$25 – $100

Door, hands free rear closer, (in tailgate), ID 84192164

18 listings$110$55 – $405

Information-GPS-TV, bypass module, (center dash)

14 listings$93$40 – $118

Fuel Pump, (LH center frame), 1.6L, ID 13518197

13 listings$125$61 – $305

Body Control (BCM), (center console), active noise control (opt NKC), 1.6L, ID 84332721

12 listings$187$81 – $305

Communication, telematics (opt UE1), (center dash), ID 84431758

12 listings$86$50 – $160

Door, hands free rear closer, (in tailgate), ID 23275430

10 listings$79$66 – $176

Temperature, ID 84221981

9 listings$61$24 – $138

Communication, wireless charger, (center dash), ID 84162497

8 listings$137$60 – $322

Fuel Pump, (LH center frame), 1.6L, ID 13526237

8 listings$123$56 – $123

Door, hands free rear closer, (in tailgate), ID 84192165

3 listings$86$75 – $96

Fuel Pump, (LH center frame), 2.0L

1 listings$25$25 – $25

Back to full guide

2018 GMC Terrain transmission control module — all trims

View 2018 guide

Common questions

2018 GMC Terrain transmission control module (Differential Lock, (carrier housing)) FAQ

How much is a used 2018 GMC Terrain transmission control module (Differential Lock, (carrier housing))?

Based on 12 priced salvage-yard listings, a used 2018 GMC Terrain transmission control module in the Differential Lock, (carrier housing) variant lists between $46 and $248, with a median asking price of $80.

Which years use the Differential Lock, (carrier housing) transmission control module?

The Differential Lock, (carrier housing) variant appears in model years 2015, 2016, 2017, 2018, 2019, 2024. Prices and availability may differ by year.