# Service bulletin PIP4101B

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10114928
- Published by NHTSA: 2017\-08\-15
- Manufacturer's number: PIP4101B
- Manufacturer's date: 2015\-10\-28
- NHTSA component: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\)

## NHTSA's summary

This Preliminary Information communication provides information to the technician about vehicles that have a Service 4WD light on and the system inoperative. Technician may find Diagnostic Trouble Code B2725 set. Technician will need to replace the transfer case dash switch.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10114928-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10114928-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline, Transfer case

## Trouble codes named

B2725

## Vehicles listed

- 2008 CHEVROLET AVALANCHE
- 2007 to 2008 CHEVROLET SILVERADO 1500
- 2007 to 2008 CHEVROLET SILVERADO 2500
- 2008 CHEVROLET SUBURBAN
- 2008 CHEVROLET TAHOE
- 2007 to 2008 GMC SIERRA 2500
- 2007 to 2008 GMC SIERRA DENALI
- 2008 GMC YUKON
- 2008 GMC YUKON DENALI
- 2008 GMC YUKON DENALI XL
- 2008 GMC YUKON XL

## Other bulletins for the same vehicles and component

- [PIP4885H](/bulletins/10253174.md), 2024-04-15, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). NQG 4WD Models With Noise Vibration On Dry Pavement.
- [PIP4885G](/bulletins/10253173.md), 2024-04-15, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). NQG 4WD Models With Noise Vibration On Dry Pavement.
- [PIP4885F](/bulletins/10253172.md), 2024-04-15, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). Vibration On Dry Pavement.
- [PIP4885E](/bulletins/10253171.md), 2024-04-15, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). NQG 4WD Models With Noise Vibration On Dry Pavement
- [PIP3366C](/bulletins/10143757.md), 2018-08-20, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary information communicates to the dealer technician thatLight Duty Trucks equipped with automatic transmissions and 4 wheel drive may exhibit a condition of grinding/ratcheting type noise when shifting the automatic transmission into park while the transfer case is in 4 wheel drive low \(4LO\) range. Dealers technician\&\#39;s are advised this condition should be deemed a normal characteristic of 4WD low operation.
- [060089026N](/bulletins/10139278.md), 2018-06-04, Service bulletin: ELECTRICAL SYSTEM; VISIBILITY:SUN/MOON ROOF ASSEMBLY; STRUCTURE:BODY:DOOR; POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); VISIBILITY:WINDSHIELD; ELECTRONIC STABILITY CONTROL \(ESC\). This warranty bulletin provides labor operation numbers for customer concerns that cant be duplicated.
- [PIP4885F](/bulletins/10112463.md), 2017-08-15, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicles that have a groan, growl, or moan coming from the vehicle when operating the vehicle in four wheel drive. Driving on clean, dry pavement in Four\-Wheel Drive High or Four\-Wheel Drive Low for an extended period of time may cause premature wear on your vehicle's power train. Dealer should advise the customer not drive on clean, dry pavement in Four\-Wheel Drive High or Four\-Wheel Drive Low for extended periods of time.
- [PIP4885H](/bulletins/10112036.md), 2017-08-15, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicles that have a groan, growl, or moan coming from the vehicle when operating the vehicle in four wheel drive. Driving on clean, dry pavement in Four\-Wheel Drive High or Four\-Wheel Drive Low for an extended period of time may cause premature wear on your vehicle?s power train. Dealer should advise the customer not drive on clean, dry pavement in Four\-Wheel Drive High or Four\-Wheel Drive Low for extended periods of time.
- [PIP4885G](/bulletins/10112030.md), 2017-08-15, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicles that have a groan, growl, or moan coming from the vehicle when operating the vehicle in four wheel drive. Driving on clean, dry pavement in Four\-Wheel Drive High or Four\-Wheel Drive Low for an extended period of time may cause premature wear on your vehicle's power train. Dealer should advise the customer not drive on clean, dry pavement in Four\-Wheel Drive High or Four\-Wheel Drive Low for extended periods of time.
- [PI\-0615](/bulletins/10043006.md), 2012-02-07, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). GMC/CHEVROLET: BULLETIN PROVIDES INFORMATION ON THE SEAL REVISION AND THE TRANSFER CASE OUTPUT SHAFT SLINGER FOR CERTAIN MODEL YEAR TRUCKS. \*PE

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