PIT5387N

Bulletin No.: PIT5387N
Published date: 04/17/2023
Preliminary Information
PIT5387N Snow Plow Generator Harness Installation / Radio HVAC
IPC Blank out When Operating a Snow Plow
Product Investigation Review Required
Models
Brand:
Model:
Model Years:
VIN:
from
to
Engine:
Transmissions:
Chevrolet
Silverado 1500
2014
All
All
All
All
Chevrolet
Silverado
2015 - 2024
All
All
All
All
GMC
Sierra 1500
2014
All
All
All
All
GMC
Sierra
2015 - 2024
All
All
All
All
With Snow Plow Prep Package (RPO VYU)
Supersession Statement
This PI was superseded to update the warranty section. Please discard PIT5387M.
Condition / Concern
Some owners may experience any of the following: IPC cluster/radio/HVAC display blanks
out, Bluetooth phone or Pandora connection dropped, the radio station or volume changes
when operating the snow plow.
A snow plow places very high electrical loads on a truck's charging system when it is being
operated (during plow movement). It demands the highest load (as high as 200 amps) when
it is raised up completely or turned to either left or right maximum angle. As this load is
turned on and off, the truck's charging system has to react within a faction of a second to
either increase or decrease its output to meet the plow's requirements.
There is no way for the truck's charging system to know when the driver is going to operate
the snow plow, and in some cases, when the load is suddenly turned off, the charging system
may momentarily over-charge for a fraction of a second. If this happens it can cause the
various complaints listed above.
Recommendations / Instructions
To correct this condition install the snow plow generator jumper harness.
For 2019 (new body style) to 2024 trucks, please reference the latest version of GM Upfitter
Integration Bulletin 161 for additional information and installation instructions.
For 2014 to 2019 (old body style) trucks, please reference the latest version of GM Upfitter
Integration Bulletin 124 for additional information and installation instructions.
To view these bulletins, access http://www.gmupfitter.com/, select the "TECHNICAL
BULLETINS" tab followed by "Show all bulletins". For any questions regarding these upfitter
bulletins, please contact GM Upfitter.
Warranty Information
This unique labor operation is a one time use and does not expire with the base warranty.
Labor Operation
0580178*
Description
Install Generator/Snow Plow Harness
Labor Time
1.2 Hr.
* This is a unique labor operation for bulletin use only.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is
resolved without completing every step, the remaining steps do not need to be performed.
Additional SI Keywords
15208
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