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Bulletin No.: PIP5579B
Published date: 06/24/2019
Preliminary Information
PIP5579B Front and Rear Axle Restriction for Vehicles with RPO SU5 SU8 Has Ended
Models
Brand: Model: Model Years: VIN: Engine: Transmissions: from to
Chevrolet Silverado 1500 (New Model) 2019 All All All All
GMC Sierra 1500 (New Model) 2019 All All All All
Involved Region or Country North America
Additional Options (RPO) SU5 or SU8
Condition Part restriction
Cause New Product Monitoring
General Motors Technical Assistance Center part restriction on the front and rear axle assemblies (RPOs SU5 and SU8) for the 2019 Chevy Silverado 1500 (New Model) and 2019 GMC Sierra 1500 (New Model) has ended.
We would like to thank all dealers who participated in this restriction for their cooperation.
These Axle assemblies can now be repaired ordering parts through the regular GM CCA parts process and
utilizing repair procedures covered in Service Information.
Use the vehicle identification number (VIN), SI, and the GM Electronic Parts Catalog to determine the correct parts to order to perform the repairs as needed.
Parts Information
Use the vehicle identification number (VIN), SI, and the GM Electronic Parts Catalog to
determine the proper parts to repair as needed.
Version History
Version 3
Modified
08/08/2018 – Created on
10/29/2018 – added part numbers 23243853, 84458156, 84454841,
23243766, 23243764, 84412729, 84459307, 84459322,
23243842, 23243845, 84459305, 84584310, 84412728,
84127132, 23243585, 11548535, 84443626,
84092759, 84092756, 23266134, 23243725
06/24/2019 Updated to end restriction on parts and allowing
full service.

Bulletin No.: PIP5579A
Published date: 10/29/2018

Preliminary Information

PIP5579A Front and Rear Axle Restriction for Vehicles with RPO SU5 SU8

Models

Brand:	Model:	Model Years:	VIN:		Engine:	Transmissions:
			from	to
Chevrolet	Silverado (New Model)	2019	All	All	All	All
GMC	Sierra (New Model)	2019	All	All	All	All

As part of our ongoing and continuous improvement we have placed the front and rear axles on restriction, to ensure that we get undisturbed parts returned for root cause analysis.

Only the axle corresponding to the RPO listed above or the following part numbers are included in this restriction. PN:  84536841, 84536840, 84573714, 84573715, 23243853, 84458156, 84454841, 23243766, 23243764, 84412729, 84459307, 84459322, 23243842, 23243845, 84459305, 84584310, 84412728, 84127132, 23243585, 11548535, 84443626, 84092759, 84092756, 23266134, 23243725

Please fill out the template below prior to contacting PQC.

Caller’s First & Last Name/Position:

Technician’s Name/Direct Phone:

Parts Manager’s Name:

Dealership’s Fax Number:

Parts Fax Number:

Q1:   Customer’s Concern:

Q2:   Has the vehicle been modified with non-production accessories?

Q3:   Is the vehicle for personal or commercial use?

Q4:   Has dealer completed the Front/Rear Axle Lubricant Level Inspection in SI? (Y/N)

Q5:  Has the Front Axle actuator 5 amp fuse been verify as good? (Y/N)

If no, check the amp fuse

If yes, continue to next question

Q6: Are there any leaks (Y/N)

If no, continue to next question

If yes,

What type of leak?

Location of the leak ?

Q7:    Are there any Noises (Y/N) If no, continue to next question

If yes, complete the following

What kind of noise?

Location and frequency of the noise ?

When does is occur?

Q8:   Are there any Vibration: (Y/N)

If no, continue to next question

If yes, complete the following

When does is occur?

Pico scope data available for engineering review (Y/N)

If yes, continue to next question

If no, Please have pico scope data available

NOTE: If a P1 vibration was noticed check the rear prop shaft and rear axle flange and verify that the paint dots on both parts are lined up.  If not re index the prop shaft and verify the concern still exists.

Q9:   Failed Axle Serial Number (located on label):

Pictures labeled 1 and 2 below show the tag location on the front differential. Item 2 is near the actuator.

Rear Axle tag location is inboard side of the left hand shock bracket.

Rear Axle tag location is inboard side of the left hand shock bracket.

Parts Information

Use the vehicle identification number (VIN), SI, and the GM Electronic Parts Catalog to determine the proper part to request.

Version History

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