# Service bulletin PIT5445B

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: 10157033
- Published by NHTSA: 2019\-04\-08
- Manufacturer's number: PIT5445B
- Manufacturer's date: 2017\-09\-25
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY

## NHTSA's summary

This Preliminary Information communication provides information to the technician of additional information when diagnosing a service driver assist message with a diagnostic trouble code B172E and or a B172F. The haptic seat motor has a pigtail lead coming off of it. In many cases the wiring pigtail near the haptic seat motor has broken and will require replacement.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10157033-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10157033-9999.pdf)

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

## Components

Electrical system, Engine, Equipment and accessories

## Trouble codes named

B172E, B172F

## Vehicles listed

- 2015 to 2016 CADILLAC ESCALADE ESV
- 2017 to 2018 CADILLAC ESCALADE ESV
- 2017 CHEVROLET SILVERADO
- 2014 CHEVROLET SILVERADO 1500
- 2015 to 2016 CHEVROLET SILVERADO 2500
- 2018 CHEVROLET SILVERADO 2500
- 2015 to 2018 CHEVROLET SUBURBAN
- 2015 to 2018 CHEVROLET TAHOE
- 2017 GMC SIERRA
- 2014 to 2016 GMC SIERRA 1500
- 2018 GMC SIERRA 3500
- 2015 to 2018 GMC YUKON DENALI

## Recalls for the same vehicles and component

- [2024294](/recalls/tc/2024294.md), 2024-05-24: Electrical
- [2021407](/recalls/tc/2021407.md), 2021-07-01: Electrical
- [21V496000](/recalls/nhtsa/21V496000.md), 2021-07-01: EQUIPMENT:ELECTRICAL:ENGINE BLOCK HEATER
- [2019325](/recalls/tc/2019325.md), 2019-06-28: Electrical
- [2019204](/recalls/tc/2019204.md), 2019-04-26: Electrical
- [19V328000](/recalls/nhtsa/19V328000.md), 2019-04-25: ENGINE
- [18V267000](/recalls/nhtsa/18V267000.md), 2018-04-26: EQUIPMENT
- [2016068](/recalls/tc/2016068.md), 2016-02-11: Electrical
- [16V084000](/recalls/nhtsa/16V084000.md), 2016-02-11: ELECTRICAL SYSTEM:SOFTWARE
- [13V544000](/recalls/nhtsa/13V544000.md), 2015-10-30: EQUIPMENT:OTHER:LABELS

## Other bulletins for the same vehicles and component

- [00\-06\-01\-026R](/bulletins/11026017.md), 2025-12-03, Service bulletin: ENGINE. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- [23\-NA\-153](/bulletins/11024485.md), 2025-10-25, Service bulletin: ENGINE. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
- [22\-NA\-080](/bulletins/11024330.md), 2025-10-16, Service bulletin: ENGINE. This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder.
- [18\-NA\-180](/bulletins/11024324.md), 2025-10-16, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This Warranty Administration service bulletin provides Lithium\-Ion battery Exchange Process and Transaction Submission information.
- [18\-NA\-180](/bulletins/11023365.md), 2025-09-26, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This Warranty Administration service bulletin provides Lithium\-Ion battery Exchange Process and Transaction Submission information.
- [15\-NA\-010](/bulletins/11020254.md), 2025-07-07, Service bulletin: ENGINE. This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states.
- [25\-NA\-100](/bulletins/11019503.md), 2025-06-12, Service bulletin: ENGINE. This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California Emission State may be entitled to the 7 year, 70,000\-mile Emission Select State Component Limited Warranty.
- [25\-NA\-087](/bulletins/11017595.md), 2025-05-02, Service bulletin: ELECTRICAL SYSTEM. This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
- [25\-NA\-052](/bulletins/11017263.md), 2025-04-28, Service bulletin: ENGINE. This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.
- [23\-NA\-001](/bulletins/11017252.md), 2025-04-28, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.

JSON: [/v1/bulletins/10157033](/v1/bulletins/10157033)

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