PIP5483A

Bulletin No.: PIP5483A
Published date: 10/17/2018
Preliminary Information
PIP5483A Chevrolet Cruze Diesel Noises When Vehicle is Turned O
Models
Brand:
Chevrolet
Model:
Cruze
VIN:
Model Years:
2017 - 2018
from
All
Engine:
to
All
1.6L Turbo Diesel (LH7)
Transmissions:
All
Involved Region or
Country
North America
Condition
A dealer may encounter a customer concern of a ratcheting, squeak, chirp, moan, and whine or buzz
type noises heard shortly after the vehicle has been turned off.
There are some components that may produce noises shortly after the engine has been turned off:
1-The Intake Manifold Runner Control Valve Actuator may be heard cycling under the hood.
A. This is done as an integrity check and to confirm that the mechanical link between the actuator
and the intake manifold runner is still connected.
Cause
(1) Intake Manifold Runner Control Valve Actuator
2- The Diesel Exhaust Fluid (DEF) Pump and DEF Reverting Valve purging DEF.
A. The Diesel Exhaust Fluid (DEF) Pump and DEF Reverting Valve may be heard from the vehicle
and/or right rear of the vehicle. When the vehicle is turned off the DEF pump and reverting valve
operate to relieve the DEF system pressure and to clear the lines of DEF. The reverting valve is
opened to relieve the pressure and send the fluid back to the DEF tank, and then the reverting valve
is closed once the DEF lines are clear.
Correction:
The noises below are considered to be normal operating characteristics of the vehicle.
It will not impact the designed performance or reliability of the vehicle.
U.S Dealers:
The noises described above were discussed in and samples are available to listen to on the GM Center of Learning web site,
centerlearning.com, in course number 10217.03V, March 2017 Emerging Issues which will be available by March 9th. It will
be in the Powertrain segment.
Canadian Dealers:
Watch for this topic in the April 2017 TAC Talk Powertrain segment; on the GM Canada Centre of Learning website.
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.
Version History
Version
Modi ed
2
3-10-2017- Created
10-17-2018- Updated to add 2018 Model Year
© 2018 General Motors. All Rights Reserved.