Bulletin No.: PIP5853E
Published date: 08/1/2023

Preliminary Information
PIP5853E TCCM Drivability DTCs and Possible Low Battery Charge
Models
Brand:
Chevrolet

Model:
Silverado 4500HD, 5500HD, 6500HD

Model Years:
2019 - 2023

VIN:

Engine:

from

to

All

All All

Transmissions:
All

Involved Region or Country North America
The vehicle may have a concern with the TCCM. causing DTC to set (see below) and
possible a discharged battery.
DTCs setting in the K69 Transfer Case Control Module:
C0396 SYM00 Range Actuator Position Sensor Circuit
P215A SYM5A Vehicle Speed Signal - Wheel Speed Signal Not Plausible
U0121 SYM00 Loss communication with Brake Control Module
Condition

B0790 SYM00 Transfer Case Neutral Range Indicator Control Circuit
C0550 SYM00 Electronic Control Unit
C2A24 SYM00 Transfer Case Shift Pending Signal Not Plausible
P0606 SYM00 Control Module Processor Performance
C0398 SYM00 Range Actuator Position - Range Position Correlation
P279C SYM00 Transfer Case High or Low Range Detected In Neutral Range
B2725 SYM00 Transfer Case Range Selection Switch Circuit

Cause

Possible low voltage or poor ground to the TCCM.

Correction:
There may also be a concern of a no shift with no DTC’S
When attempting an Actuator relearn there will be no noise heard from the actuator

In some instances, DTC C0398 may set following a failed re-learn attempt using either GDS2
or a manual relearn. During the GDS2 relearn an “Incorrect Power Mode” message may be
displayed
If this is found Inspect for ignition 1 voltage at the Transfer Case Control Module at
connector X2 terminal 4. It may be necessary to volt drop this circuit to see the low voltage
If there is no concern seen with the connections at the Transfer Case Control Module (K69)
then inspect for a spread or damaged terminal at the X61A IP Junction Block connector X4
Terminal 25
If a damaged terminal is found, please repair using the appropriate terminated lead
Also, there may be an issue at G110
This ground may be loose; however, it will feel tight due to the anti-corrosion paint that has
been applied. This paint will not only make the ground feel tight but will also seep behind the
ground and cause a poor connection
If no concern is seen with the ignition 1 voltage G110 should be removed and inspected for a
poor connection, for the presence of anti-corrosion paint behind the eyelet, or for a too long
bolt installed.
See the pictures below

Note: Some of these codes can be set by multiple failed shift attempts with this transfer case;
we do need to have some movement. This could be as little as turning the steering wheel stop
to stop, for both 4 high and 4 low range. This transfer case does not use a synchronizer, it is a
gear to gear set up. Please refer to the following information from the Owner's Manual.

Per the Owner's
Manual:
Shifting Into 2 High from 4 High
The ignition must be on and the vehicle must be moving less than 16 km/h (10 mph).
Turn the knob to 2 H.
The indicator light will remain on the selected setting when the shift is complete.
If the vehicle is moving more than 16 km/h (10 mph), the indicator light will ash and the shift will not occur.
If the shift does not occur, turn the knob back to the original position and attempt the shift again.

Shifting Into 4 Low
The ignition must be on and the vehicle speed must be less than 4 km/h (3 mph) with the
transmission in N (Neutral).
Turn the knob to 4 L.
Wait for the 4 L indicator light to stop ashing before shifting the transmission into gear.
The indicator light will remain on the selected setting when the shift is complete.
If the vehicle is moving more than 4 km/h (3 mph), the indicator light will ash and the shift will not occur.
If the shift does not occur, turn the knob back to the original position and attempt the shift again.

Warranty Information
For vehicles repaired under the Powertrain coverage, use published labor times.

Version History
Version

6

Modi ed

05/17/2022 - Created On.
07/27/2022 - Updated to correct labor operation
09/28/2022 - Updated to add additional information from owner’s manual
04/05/2023 - Updated to add additional diagnostic information

05/12/2023 - Updated to remove diode info and change labor time info
08/01/2023-Updated to correct TCCM terminal information

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