PIP5638

Service Bulletin Details

Public Details for: PIP5638

This preliminary information communicatesthere may be a question about the maximumvehicle speed.Themaximumvehicles speed is reflected by the axle ratio that it was ordered with.


- 2019 -

Models from 2019
2019 CHEVROLET SILVERADO 4500HD
2019 CHEVROLET SILVERADO 5500HD
2019 CHEVROLET SILVERADO 6500HD 
Bulletin No.: PIP5638
Published date: 04/16/2019
Preliminary Information
PIP5638 Vehicle Maximum Speed Information
Models
Brand:
Chevrolet
Model:
Model Years:
Silverado 4500HD, 5500HD, 6500HD
2019
VIN:
Engine:
from
to
All
All All
Transmissions:
All
Involved Region or Country North America
Condition
There may be a question about the maximum vehicle speed.
Cause
The maximum vehicles speed is re ected by the axle ratio that it was ordered with.
Correction:
Example: if the truck has a 4.88 rear....will only go 65 MPH. This is operating as designed. No x.
The Speed and axle ratios are called out below
Rear axle, 4.10 ratio, Maximum (Max) road speed: 78 MPH
Rear axle, 4.30 ratio, Maximum (Max) road speed: 75 MPH
Rear axle, 4.56 ratio, Maximum (Max) road speed: 70 MPH
Rear axle, 4.88 ratio, Maximum (Max) road speed: 65 MPH
The PI will removed after the owner's Manuals has been updated.
Version History
Version
1
Modi ed
04/16/2019 - Created on
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