U160F On GM trucks and SUVs, U160F means lost communication with brake system control module 1 on CAN bus 1

Lost communication with brake system control module 1 (CAN bus 1)

U160F in short

On GMC and Chevrolet trucks and SUVs, U160F means lost communication with brake system control module 1 on CAN bus 1. Owners see it with many other lost-communication codes, stability control faults and sometimes a power loss. Because brakes are involved, have a technician check it soon.

Newer GM vehicles have more than one CAN network. U160F is stored when the brake system control module stops answering on the first one, and U1610 is the matching code for the second. Owners of a 2025 Sierra and a 2023 Yukon list both with U1611 (engine control module on CAN bus 2).

Reports are long lists of codes. A 2025 Sierra owner reads U160F with U0101, U0131, U0140, U0146 and U3003 (battery voltage below threshold), and a 2023 Yukon owner counts 27 active codes after nine repair attempts with stability control disabled. A 2023 Suburban lost communication with the steering, gateway, engine, body and brake modules with no warning light first.

Because brakes and stability systems are involved, this page explains the code only and gives no repair steps. GM bulletins for this code were not found in our bulletin extract.

Pick your make

U160F is a manufacturer-specific code: its meaning depends on who built the car.

Other makes: meaning not verified. Check with a scan tool that reads manufacturer definitions.

Most likely causes

  1. Low system voltage or loss of power to modules

    Supported by vehicle data
    Why it ranks here
    A 2025 Sierra owner lists U3003 battery voltage below threshold with U160F and other lost-communication codes.
    What would change this
    Rises if the battery is weak or voltage dips while driving. Falls if voltage is steady.

  2. Brake system control module or its connectors

    Possible — needs testing
    Why it ranks here
    A 2023 Yukon owner names the brake system control module as repeatedly failing across nine repair visits, but the repair is not described.
    What would change this
    Rises if the module drops off a scan while power and grounds are good. Falls if it answers normally.
    How to test the brake system control module (abs module)

  3. CAN network fault shared by several modules

    Possible — needs testing
    Why it ranks here
    A 2023 Suburban and a 2022 Silverado lost many modules at once with U160F, U1610 and U1611 among the codes.
    What would change this
    Rises when many modules on both buses are missing. Falls if only the brake module is.

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Read all modules and note whether U1610, U1611, U0101, U0131, U0146 or U3003 are stored with U160F and whether stability or brake warnings are on.

    Low riskTool: scan tool that reads all modules

    • IfMany modules on both buses are missing

      It meansA shared power, ground or network fault is likely; have a technician test it.

      Go to step 2

    • IfOnly the brake module is missing

      It meansHave the brake module and its connectors tested.

      Go to step 2

  2. Have a technician check battery and charging, grounds, the network and the brake system control module, and look up GM service information for the exact vehicle.

    Best left to a shop

    Warning:Brake and stability control systems affect stopping; leave testing and repair to a trained technician.

Symptoms

  • Stability control or brake warnings on
  • Many warning lights or messages at once
  • Loss of power or steering assist Gets more serious: stop and have it checked.
  • No warning light first, then several modules missing

How to fix

This is a safety-critical system, so we explain the code but don't give repair steps. Have it inspected by a qualified technician.

Parts and cost context

  • Brake system control module (ABS module):A Yukon owner names this module; replacement should follow a technician confirming the fault; labor varies; get a quote.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

GMC

Chevrolet

  • U0129U0129 is a generic network code: a module on the vehicle network lost communication with the brake control module (ABS or stability module), usually stored by the engine, body or instrument computer

    Same system Possible — needs testing

    U0129 is the generic code for lost communication with the brake system control module; U160F gives the CAN bus detail on newer GM vehicles.

  • U0131Lost communication with the power steering control module

    Same system Supported by vehicle data

    U0131 (power steering control module) was stored with U160F on a 2025 Sierra, 2023 Suburban and 2022 Silverado.

  • U0146A module lost communication with gateway module A, which passes messages between the vehicle networks

    Same system Supported by vehicle data

    U0146 (gateway module) was stored with U160F on a 2025 Sierra and 2023 Suburban.

All Module network (CAN bus) communication codes

U160F questions

Does U160F mean the same on other makes?

Not necessarily. This page covers GMC and Chevrolet only; we have not sourced meanings for other makes.

Sources and review

  1. NHTSA complaint ODI 11746696: 2025 GMC Sierra 1500 — NHTSA (owner complaint)
  2. NHTSA complaint ODI 11728908: 2023 GMC Yukon — NHTSA (owner complaint)
  3. NHTSA complaint ODI 11546032: 2023 Chevrolet Suburban — NHTSA (owner complaint)
  4. NHTSA complaint ODI 11769860: 2022 Chevrolet Silverado 1500 — NHTSA (owner complaint)
Last reviewed
Written by
Saurabh K.
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This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

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