PIT4780Q

Bulletin No.: PIT4780Q
Date: Aug-2014
Subject:
Parallel Hybrid Truck (PHT) Part Restriction
Models:
2004-2007 Chevrolet Silverado Classic
2004-2007 GMC Sierra Classic
All With RPO HP2
This PI was superseded to change to TAC Part Restriction. Please discard PIT4780P.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
The purpose of this Bulletin is to explain the TAC Parts Restriction program for the models listed above.
If diagnosis leads to replacement of any of the components listed above, contact GM TAC @ 877-446- 8227 (U.S.) or in Canada 1-800-263-7740 (English) or
1-800-263-7960 (French) to review case details
Please have as much stored DTC and snapshot information as possible prior to contacting TAC.
Recommendation/Instructions
Note: NOTE: When ordering the AGM Hybrid Batteries the Midtronics Battery Tester Failure Codes / Information are needed prior to calling TAC. Failure to
test using the proper test adapters and SI procedure may result in inaccurate results or misdiagnosis that would lead to higher than necessary warranty, parts
or labor costs.
1.
When replacing the Stator, it is recommended to replace the Phase Cable Set at that time.
2.
When programming the ESCM / BECM it may be necessary to select the "Tech2 Remote" method in TIS.
Note: After reviewing the diagnosis, if component replacement is needed, GM TAC will arrange for ordering of the part(s). When this occurs, record
the last 8 of the VIN number to be used by the parts department as the CONTROL NUMBER (in conjunction with the part number) to track shipment of
the part. It is not necessary to call TAC for part tracking information.
Parts Information
Part Number
Description
Quantity
19117643
Starter Generator Phase Cables
1
19117206
Starter Generator (Stator)
1
19116094
Battery Energy Control Module ESCM / BECM
1
19117231
Battery Energy Control Module ESCM / BECM
1
12601238
Starter Generator Control Module / SGCM
1
19117111
Starter Generator Control Module / SGCM
1
1
89021957
Batteries (Under rear seat)
3
5010200*
Generator Control Module 3-Phase Cable Assembly
Replacement (SI DOC 1285077)
N/A
5010180*
Generator Stator Replacement (SI DOC 1198589)
N/A
4040210*
Generator Battery Control Module Replacement (SI DOC
1710595)
Yes
5010160*
Generator Control Module Replacement (SI DOC 1710671
Yes
5031030*
Generator Battery Replacement (SI DOC 1198523)
Reset Amp Hours
Warranty Information
For vehicles repaired under warranty use:
* Use Published Labor Operation Time
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.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may
occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools,
safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that
your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
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