NHTSA ID Number: 10176313
Manufacturer Communication Number: PIT4506E
TSB/Document Date: 2020-06-15
Summary
This Preliminary Information communication provides information to the technician that some owners of Heavy Duty Trucks and Utilities may ask if they can lower their tire pressures. Tire pressures being set to the "Tire and Loading Label" will ensure the safe handling and ride characteristics of the truck and should not be lowered.
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TSB/Document ID: PIT4506E
Replacement Service Bulletin Number:
MFR Communication Date: 2020-05-13
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
Bulletin No.: PIT4506E
Published date: 05/13/2020
Preliminary Information
PIT4506E Questions Regarding Reducing Tire Pressures
Models
Brand:
Model:
Model Years:
VIN:
from
to
Engine:
Transmissions:
Silverado 2500/3500
2007 - 2020
All
All
All
All
Suburban 2500
2007 - 2013
All
All
All
All
Suburban 3500 HD
2016 - 2019
All
All
All
All
Sierra 2500/3500
2007 - 2020
All
All
All
All
Yukon XL 2500
2007 - 2013
All
All
All
All
Supersession Statement
This PI was superseded to update model year. Please discard PIT4506D.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition / Concern
Some owners of HD Trucks and Utilities may ask if they can lower their tirepressures from what is
recommended on the "Tire and Loading Label" if the vehicle
is not being used for hauling or towing.
Recommendations / Instructions
The answer is no. Tire pressures beingset to the "Tire and Loading Label" will ensure the safe
handling and ride characteristics of the truck. Ride, handling,
tire wear, fuel economy, and road
noise concerns may be caused by improperly adjusted tire pressure.
Note: If the tire pressures are lowered on a vehicle equipped with Tire Pressure Monitor
, the "Check
Tire Pressure" message may display on the DIC. The Tire Pressure Mon
itor system was implemented
to meet FMVSS 139 and cannot be removed or disabled.
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.
© 2020 General Motors
. All Rights Reserved.
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