# Service bulletin GCUS\-3\-311

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: 10135172
- Published by NHTSA: 2018\-05\-07
- Manufacturer's number: GCUS\-3\-311
- Manufacturer's date: 2015\-10\-09
- NHTSA component: ENGINE AND ENGINE COOLING; POWER TRAIN

## NHTSA's summary

15396B \- Service Update \(Parts Information revised\). This bulletin provides a service procedure to install the original design temperature\-sensor wiring harness to the valve body on certain 2015 model year Cadillac Escalade and Escalade ESV; Chevrolet Silverado; and GMC Sierra, Yukon, and Yukon XL vehicles, equipped with a 6.2L engine \(L86\) and 8\-speed automatic transmission \(M5U\). The supplier of the transmission\-wiring harness introduced an unapproved change to the temperature sensor \(thermistor\), resulting in incorrect oil\-temperature readings during transition from cold to warm temperatures. This could cause a harsh shift when starting the vehicle at temperatures below 32ºF \(0ºC\); however, shift quality improves once the transmission oil warms up.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10135172-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10135172-0001.pdf)

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

## Components

Engine, Transmission and driveline

## Vehicles listed

- 2015 CADILLAC ESCALADE ESV
- 2015 CHEVROLET SILVERADO 2500
- 2015 GMC SIERRA 1500
- 2015 GMC YUKON XL

## Recalls for the same vehicles and component

- [26V289000](/recalls/nhtsa/26V289000.md), 2026-05-07: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\)
- [14V819000](/recalls/nhtsa/14V819000.md), 2014-12-24: POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT
- [2014589](/recalls/tc/2014589.md), 2014-12-22: Powertrain
- [2014577](/recalls/tc/2014577.md), 2014-12-18: Engine
- [2014254](/recalls/tc/2014254.md), 2014-06-27: Powertrain
- [14V374000](/recalls/nhtsa/14V374000.md), 2014-06-27: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\)
- [2014102](/recalls/tc/2014102.md), 2014-03-31: Powertrain
- [14V007000](/recalls/nhtsa/14V007000.md), 2014-01-13: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

## 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.
- [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.
- [PI0281L](/bulletins/11019516.md), 2025-06-12, Service bulletin: STEERING; POWER TRAIN; SUSPENSION. This preliminary informational \(PI\) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
- [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.
- [25\-NA\-052](/bulletins/11016942.md), 2025-04-10, 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.
- [PIP5966A](/bulletins/11014622.md), 2025-03-02, Service bulletin: POWER TRAIN. This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement
- [PIP5966A](/bulletins/11014621.md), 2025-03-02, Service bulletin: POWER TRAIN. This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement
- [16\-NA\-019](/bulletins/11014353.md), 2025-02-19, Service bulletin: POWER TRAIN. This service bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.

JSON: [/v1/bulletins/10135172](/v1/bulletins/10135172)

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