NHTSA ID Number: 10204439
Manufacturer Communication Number: PIP5646D
Summary
This Preliminary information communicates to the dealer technician that some customers may comment the rear wheels locked up at low speeds after a hot soak. Technicians may find DTC’s P2724, P2727 or P2729 set. Technician’s are advised to replace the TCM to address this concern.
Condition
Customers may comment that while driving at low speeds the rear wheels lock up and cause the vehicle to come to a stop as if the brakes were applied or the vehicle was shifted into park.
DTC’s P2727, P2729 or P2724 may be set but not in all situations.
DTC’s may have not set when this condition occurred.
The customer may describe the condition occurred in the following situations:
First situation:
The vehicle was parked and allowed to hot soak.
The vehicle is restarted.
The transmission is shifted to drive.
The vehicle will drive forward for a short distance and the wheels lock up.
The transmission may stay in this condition for several key cycles and may be towed in for service.
The transmission will have reverse.
Second situation:
The vehicle is driven and then idled in park from 30 minutes to 4 hours.
The transmission is shifted to drive.
The vehicle will dive forward for a short distance and the wheels lock up.
The transmission may stay in this condition for several key cycles and may be towed in for service.
The transmission will have reverse.
Cause
Internal TCM
Correction:
Replace the TCM, part number 24043411.
Parts
| Description | Part Number | QTY |
| Transmission Control Module | 24043411 | 1 |
4 Affected Products
Vehicles
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5646D
Published date: 11/2/2021
NHTSA ID Number: 10171293
Manufacturer Communication Number: PIP5646C
Summary
This Preliminary information communicates to the dealer technician that some customers may comment the rear wheels locked up at low speeds after a hot soak. Technicians may find DTC’s P2724, P2727 or P2729 set. Technician’s are advised to replace the TCM to address this concern.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5646C
Published date: 01/17/2020
NHTSA ID Number: 10165891
Manufacturer Communication Number: PIP5646B
Summary
This Preliminary information communicates to the dealer technician that some customers may comment the rear wheels locked up at low speeds after a hot soak. Technicians may find DTC’s P2724, P2727 or P2729 set. Technician’s are advised to replace the TCM to address this concern.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5646B
Published date: 09/18/2019
NHTSA ID Number: 10161049
Manufacturer Communication Number: PIP5646A
Summary
This Preliminary information communicates to the dealer technician that some customers may comment the rear wheels locked up at low speeds after a hot soak. Technicians may find DTC’s P2724, P2727 or P2729 set. Technician’s are advised to replace the TCM to address this concern.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5646A
Published date: 05/29/2019
NHTSA ID Number: 10161045
Manufacturer Communication Number: PIP5646
Summary
This Preliminary information communicates to the dealer technician that some customers may comment the rear wheels locked up at low speeds after a hot soak. Technicians may find DTC’s P2724, P2727 or P2729 set. Technician’s are advised to replace the TCM to address this concern.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5646
Published date: N/A
Reprogramming
GM Diagnostic/Programming (TIS2Web)
Approved J2534 Device with TIS2WEB can reprogram 1996 and later All GM Modules.
To obtain the latest electronic controller calibration information for your vehicle, go to https://tis2web.service.gm.com/tis2web and enter the vehicle's 17 character Vehicle Identification Number (VIN) and select 'Get CAL ID’.
You can then compare the latest part number with the actual number installed on the vehicle to determine if a reprogram is needed.
The Service Programming System (SPS) application is part of the TIS2Web system. To program an ECU, the SPS application must communicate with the vehicle control modules using the proper J2534 programming interface tool.
The Tech 2 supports model years 1996 and beyond. With the addition of the CAN Diagnostic Interface (CANdi) module, Tech 2 is fully backward compatible with current Tech 2 functionality and operates transparently when diagnosing non-CAN-equipped vehicles.
Servicing the next generation Global A vehicles will require the diagnostic software, GDS2, Global Diagnostic System 2 running on a local PC device while the MDI is connected to the vehicle. The GM MDI is the Global Diagnostic tool for future vehicles starting with Global A vehicles.
The GM MDI was introduced in the fall of 2007 for Pass-Thru programming and offers faster programming speed. It can be used to perform Pass-Thru programming on all vehicles built since 1996 and into the future. Click here to view a list of GDS supported vehicles.
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SEOCONTENT-START
Bulletin No.: PIP5646D Published date: 11/2/2021 Preliminary Information PIP5646D Rear Wheels Lock Up While Driving At Low Speeds Feels Like The Brakes Applied Or The Transmission Was Shifted To Park DTCs P2724 P2727 Or P2729 May Or May Not Set Product Investigation Review Required Models Brand: Model: Model Years: VIN: Engine: Transmissions: from to Chevrolet Silverado 1500 (New Model) 2019 – 2020 All All All MQE GMC Sierra 1500 (New Model) 2019 – 2020 All All All MQE Involved Region or Country North America Condition Customers may comment that while driving at low speeds the rear wheels lock up and cause the vehicle to come to a stop as if the brakes were applied or the vehicle was shifted into park. DTC’s P2727, P2729 or P2724 may be set but not in all situations. DTC’s may have not set when this condition occurred. The customer may describe the condition occurred in the following situations: First situation: The vehicle was parked and allowed to hot soak. The vehicle is restarted. The transmission is shifted to drive. The vehicle will drive forward for a short distance and the wheels lock up. The transmission may stay in this condition for several key cycles and may be towed in for service. The transmission will have reverse. Second situation: The vehicle is driven and then idled in park from 30 minutes to 4 hours. The transmission is shifted to drive. The vehicle will dive forward for a short distance and the wheels lock up. The transmission may stay in this condition for several key cycles and may be towed in for service. The transmission will have reverse. Cause Internal TCM Correction: Replace the TCM, part number 24043411. Do not clear any DTC’s from the TCM or perform a Service Fast Learn (SFL). Follow published Service Information procedures for the replacement of the TCM. Parts Information Description Part Number QTY Transmission Control Module 24043411 1 Warranty Information For vehicles repaired under the Emission coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information. Labor Operation Description Labor Time 8461430 Transmission Control Module Replacement Use Published Labor Time Version History Version 5 Modified 05/14/2019 – Created on 05/29/2019 – Removed TCM part number 24296206. 09/17/2019 – Separated situation types and removed information on TCM restriction. Removed TCM part number 24289415. Added TCM part number 24296206. 01/17/2020 – Removed TCM part number 24296206 and added TCM part number 24043411. 11/03/2021 – Changed the warranty disclaimer from Powertrain Coverage to Emission Coverage.
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