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PAC LCGM29 radio replacement interface box, black plastic housing with 14-pin and 16-pin connectors

PAC

PAC LCGM29 Radio Replacement Interface 29-Bit LAN

SKU CH-6BFH-RQDQX

Retains safety chimes and provides a 10-minute accessory output for select non-amplified 29-bit GM LAN vehicles with 14-pin and 16-pin connectors

  • Retains all factory safety warning chimes after radio replacement
  • Provides 10-minute retained accessory power output for accessories
  • Updates quickly via PAC-UP USB adapter from PAC website
  • Compatible with select non-amplified 29-bit GM LAN vehicles
  • Works with both 14-pin and 16-pin factory connectors

Radio Replacement Interface 29-Bit LAN

The PAC LCGM29 allows installation of an aftermarket radio in select non-amplified GM LAN vehicles while keeping factory safety chimes. It works with 14-pin and 16-pin factory connectors and provides a 10-minute retained accessory power output. Firmware updates are performed through the PAC-UP USB adapter downloaded from the PAC website.

Sustained Operation

The interface maintains chime retention and RAP output continuously during vehicle use without time-limited performance drops. The 10-minute accessory timer resets reliably with each ignition cycle for daily driving. Update capability ensures long-term compatibility if vehicle bus parameters change.

Build and Connectivity

The unit plugs directly into the existing 14-pin and 16-pin harnesses for a secure, solder-free connection. Its compact housing fits behind the dash without requiring additional mounting brackets. The USB update port remains accessible for future firmware revisions.

How it compares

Measured against everything we stock in Pro Audio Equipment, at today’s prices. Recalculated every night.

Price $35.99
Cheaper than about 65% of the 613 comparable items (median $56.99).

Specifications

Product
Brand namePAC
Model nameLCGM29

Questions about this item

Will the 10-minute RAP accessory output drain the battery if the car sits all day?

The interface supplies a timed 10-minute accessory output after the key is removed, then shuts off automatically to protect the battery during extended parking.

Which factory connectors must my GM vehicle already have for the LCGM29 to plug in?

The module requires both the 14-pin and 16-pin factory harnesses found in select non-amplified 29-bit LAN GM vehicles.

Does the LCGM29 keep the factory chimes working when I swap the radio in a 29-bit LAN GM vehicle?

Yes, the interface retains all safety warning chimes when the factory radio is replaced in compatible 29-bit LAN GM models.

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