16-NA-207: Buzzing Noise Heard and/or Vibration Felt in Shifter Assembly and/or Shifter Console During Aggressive Driving and Parking Maneuvers After Vehicle has Warmed Up – 2016-2018 Cadillac CT6

#16-NA-207: Buzzing Noise Heard and/or Vibration Felt in Shifter Assembly and/or Shifter Console During Aggressive Driving and Parking Maneuvers After Vehicle has Warmed Up – (Sep 26, 2017)

Subject: Buzzing Noise Heard and/or Vibration Felt in Shifter Assembly and/or Shifter Console During Aggressive Driving and Parking Maneuvers After Vehicle has Warmed Up

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Cadillac CT6 2016 2018

 

Involved Region or Country North America and N.A. Export Regions
Condition The customer may comment on a buzzing noise from the I/P area under heavy acceleration and most noticeable after the vehicle engine has warmed up.
Cause This may be caused by the weight on the shifter cable expanding due to thermal cycling and allowing the cable to move resulting in noise.
Correction If the shifter cable has been found to be the cause of the customer concern, the shifter cable must be replaced.

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16-NA-202: HVAC Air inlet Door Noise – 2017 Cadillac XT5

#16-NA-202: HVAC Air inlet Door Noise – (Jun 21, 2016)

Subject: HVAC Air Inlet Door Noise

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Cadillac XT5 2017 2017 All All

 

Involved Region or Country North America
Condition Some customers may comment on hearing a noise coming from the HVAC, behind the glove box area.
Cause The cause of the condition may be a mis-alignment of the air inlet housing case halves, creating an interference with the air inlet door during closing.

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16-NA-195: Fuel Odor, Fuel Smell, Fuel Leak, Fuel Weeping from Top of Tank, DTC P0442 May Be Set – 2015-2017 Chevrolet Colorado & GMC Canyon

#16-NA-195: Fuel Odor, Fuel Smell, Fuel Leak, Fuel Weeping from Top of Tank, DTC P0442 May Be Set – (Nov 17, 2016)

Subject: Fuel Odor, Fuel Smell, Fuel Leak, Fuel Weeping from Top of Tank, DTC P0442 May Be Set

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Colorado 2015 2017 All All
GMC Canyon 2015 2017

 

Involved Region or Country NORTH AMERICA, GUAM, MEXICO, PUERTO RICO
Condition Some customers may comment on a fuel odor, fuel leak or fuel weeping from the top of the fuel tank.
Cause fractured port (1)

cracks in the plastic flange (2)

The cause may be sulfuric acid, or other such chemicals, placed in the bed of the truck that has either leaked or been washed through the holes in pickup box, and settled onto the top of the fuel tank. Examples of chemical damage to the fuel pump module such as a fractured port (1) and cracks in the plastic flange (2), are shown in the graphics above.

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PIT5510D: Fuel Gauge Displays Empty / Low Fuel Light on / DTC P2636 – 2016 Chevrolet Silverado & GMC Sierra 3500 Chassis Cab

#PIT5510D: Fuel Gauge Displays Empty / Low Fuel Light on / DTC P2636 – (Mar 21, 2018)

Subject: Fuel Gauge Displays Empty / Low Fuel Light on / DTC P2636

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Silverado 3500 Chassis Cab 2016 All All 6.6L LML All
GMC Sierra 3500 Chassis Cab 2016 All All 6.6L LML All

With Dual Fuel Tanks RPO N2N

Supersession Statement:This PI was superseded to update step 14 in the recommendation. Please discard PIT5510C.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

 

Condition/Concern

Note: See “Diagnostic Tip” at the bottom of the recommendation section to prevent a repeat P2636 from occurring.

Some owners may comment that the fuel gauge shows empty and the low fuel level indicator is on. When checking for DTCs, a P2636 will be set in the ECM.

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16-NA-198: Holes/Tears in Fabric of Sunroof Air Deflector – 2016 Cadillac CT6

#16-NA-198: Holes/Tears in Fabric of Sunroof Air Deflector – (Jun 17, 2016)

Subject: Holes/Tears in Fabric of Sunroof Air Deflector

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Cadillac CT6 2016 2016 SOP 2016 Prior to 1G6KK5R66GU151485 All All

 

Involved Region or Country NORTH AMERICA, JAPAN, KOREA, RUSSIAN FEDERATION, MIDDLE EAST, EUROPE, ISRAEL
Additional Options (RPO) Equipped with Sunroof (RPO C3U)
Condition seeing tears (1)

Some customers may comment on seeing tears (1) or a large hole in the sunroof air deflector fabric.

Cause The cause of the condition may be an interference where the air deflector is contacting the sunroof housing front beam and guide rails.

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