Chevrolet U186A: Lost Communication With Transfer Case Control Module

Is your scanner showing Chevrolet U186A?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Chevrolet U186A: Lost Communication With Transfer Case Control Module

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$75-$200
Can I Still Drive?
:
Yes

What Does The Chevrolet U186A Code Mean?

The system voltage is between 9-16 volts. The vehicle power mode master indicates that the need for serial data communications.

A supervised periodic message that includes the transmitter module availability has not been received.

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Dorman 599-105 Remanufactured Transfer Case Control Module

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Chevrolet Volt Hybrid DTC – OBDG01 HYBRID Diagnostics Document, page 603.

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