Bulletin No.: PIC6086A
Date: May-2016

Subject:

Oily Substance On Windshield Leaking From Moisture Sensor

Models:

2013 -2016 Cadillac ATS
2016 Cadillac ATS-V
2014 - 2016 Cadillac CTS Sedan (VIN A)
2013 - 2016 Cadillac XTS
2015 Cadillac Escalade Models
2013 - 2016 Cadillac SRX
2015 - 2016 Chevrolet Suburban, Tahoe
2015 - 2016 GMC Yukon Models
2013 - 2016 Buick Encore
With Rain Sense (RPO CE1) (RPO CEC for SRX only)

This PI was superseded to update model years. Please discard copies of PIC6086.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern
Some customers may comment that an oily substance is found on the inside windshield surface and appears to be leaking from the rear view mirror area.

Recommendation/Instructions
The oil/fluid is from the gel pad of the moisture sensor, the oil/fluid can separate and leak due to heat loads. The sensor should only leak one time and leakage
will not affect the performance of the sensor.
Note: Only 1 gram of oil is used in the sensor – so the leak will be minimal. As such, driver visibility will not be impacted.
Inspect the moisture sensor for being the source of the leak, If found to be leaking, carefully remove the moisture sensor by gently rocking the sensor in the
bracket and pulling down with constant pressure.
Important: Use care to avoid touching the gel of the moisture sensor. Using excessive force to remove may cause the gel to separate from the sensor. Any
sensor that experiences gel separation should be replaced.
Clean the glass surface and sensor bracket with an Isopropanol Alcohol wipe until the surfaces are clean, then re-install the moisture sensor.
Test the moisture sensor by placing the ignition in the run position and rotating the wiper switch Intermittent (delay) band fully forward. Once the wipers wipe
once, apply water to the windshield in the area of the moisture sensor with a spray bottle. After one or two sprays, the wipers should wipe.

Warranty Information
For vehicles repaired under warranty use:
Labor Operation

Description

Labor Time

2080528*

Remove Rain Sense Moisture Sensor And Clean Glass and
Mounting Bracket

0.5 hr

1

* This is a unique labor operation for bulletin use only. This will not be published in the Labor Time Guide.
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.

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