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Remanufactured OnStar module for 2018 GMC Terrain, part 84431758

1 Factory Radio

1 Factory Radio Chassis OnStar Communication Control Module 84431758

SKU CH-VCXE-1J6VB

A professionally remanufactured Chassis OnStar Communication Control Module for the 2018 GMC Terrain, part number 84431758

  • Product typeRadio
  • Product weight6
  • Professionally remanufactured and 100% functional
  • Direct-fit for 2018 GMC Terrain models
  • Exact OEM part number 84431758
  • Interchange reference 591-TERRAIN for easy matching
  • Replacement-only unit — verify your part number first

2018 GMC Terrain OnStar Module

This professionally remanufactured Chassis OnStar Communication Control Module carries part number 84431758 and is built for the 2018 GMC Terrain. It arrives in 100% working order after cleaning, servicing and thorough testing. Dealer activation may be required once installed.

Owners replacing a failed 84431758 unit

The module is a direct replacement only; it will not function if your vehicle uses a different part number or data stream. Buyers who cannot confirm the exact part number currently in their Terrain should look elsewhere. Compatibility depends on matching the original component precisely.

Single-module replacement for one vehicle

The unit restores OnStar communication for a single 2018 GMC Terrain when the original 84431758 module has failed. It does not add extra features, support other model years or work without dealer programming where required. Capacity is limited to the factory OnStar functions of that specific vehicle.

How it compares

Measured against everything we stock in Car Stereos & Multimedia Receivers, at today’s prices. Recalculated every night.

Price $87.99
Cheaper than about 83% of the 3,253 comparable items (median $212.99).

Specifications

Product
Brand name1 Factory Radio
Model name84431758
Product typeRadio

Questions about this item

What vehicle must I already own for the 84431758 OnStar module to function?

The module is a direct replacement for the 2018 GMC Terrain and requires that exact vehicle platform to operate correctly.

Will the 591-TERRAIN interchange part work with my existing factory radio harness?

Yes, the 591-TERRAIN interchange number matches the original factory connector, so it plugs into the existing harness without adapters.

How can I confirm the remanufactured module is communicating properly after installation?

The OnStar system should initialise and show active status on the vehicle display, confirming the 100% working-order module is coded to the VIN.

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