SES Lamp ON With DTC P0324 – Engine Squeak Or Belt Noise – 2016-2020 Buick Cadillac Chevrolet GMC

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Bulletin No.: PIP5545C Published date: 07/7/2020
Preliminary Information
PIP5545C SES Lamp ON With DTC P0324 – Engine Squeak Or Belt Noise
Models

Brand:

Buick Buick Cadillac

Model:

LaCrosse Regal ATS

Model Years:

2017 – 2019
2018 – 2020
2016 – 2019

VIN:
from to
ALL ALL
ALL ALL
ALL ALL

3.6L LGX
3.6 LGX 3.6L LGX

Engine:

Transmissions:

ALL ALL ALL

Cadillac Cadillac Cadillac Cadillac Chevrolet Chevrolet Chevrolet GMC GMC

CT6 CTS XT5 XT6
Blazer Camaro Colorado Acadia Canyon

2016 – 2020
2016 – 2019
2017 – 2020
2020
2019 – 2020
2016 – 2019
2017 – 2020
2017 – 2019
2017 – 2020

ALL ALL ALL ALL ALL ALL ALL ALL ALL

ALL ALL ALL ALL ALL ALL ALL ALL ALL

3.0L LGW, 3.6L LGX
3.6L LGX
3.6L LGX
3.6 LGX
3.6 LGX 3.6L LGX 3.6L LGZ 3.6L LGX 3.6L LGZ

ALL ALL ALL ALL ALL ALL ALL ALL ALL

Involved Region or Country

Condition

Cause

North America
Some customers may comment that the SES lamp is on or the engine may have a slight noise coming
from the front of engine belt area.
This noise may or may not be present at the time vehicle comes in.
Upon investigation you may find DTC P0324 set in the ECM.
Vehicle may also have a slight squeak noise coming from the front of engine. We have determined
that at times this code can be set by noise from the water pump.
Correction:
If this condition is found perform the following inspections prior to diagnosing per SI.
a) Listen to the water pump with a stethoscope or chassis ears to see if any unusual noise is
heard. Compare to similar vehicle to confirm.
b) Watch the knock retard bank to bank on GDS2, then remove the belt and observe knock retard
again. If there is a difference this PI applies.

If no noises are heard or there is no difference in knock retard then this PI does not apply.
Normal SI diagnostics should be followed.

If a noise is heard or a difference is made removing the belt, then replace the water pump and
reevaluate the
concern.
NOTE: This is a preliminary temporary diagnostic and repair. As more investigation information
becomes available this PI will be updated or advanced to a bulletin.
Warranty Information
For vehicles repaired under the Powertrain coverage, use the following labor operation. Reference
the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.
Labor Operation Description
Labor Time
4032750 Water Pump Replacement
Use Published Labor Time
Version History
Version 4
01/11/2018 – Created on
09/05/2018 – Updated to remove Models

Modified

12/11/2018 – Updated to add Models and Model Year 07/06/2020 – Updated to add Models and Model Year

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