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Service bulletin 16NA171

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10187373
Published by NHTSA2021-02-22
Manufacturer's number16NA171
Manufacturer's date2020-12-15
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

This technical bulletin provides a procedure to reinstall the rear defroster tab on the rear window defogger for vehicles with the condition of rear defrosters inoperative or if one is to break during a normal repair.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
CADILLAC ESCALADE2015, 2016, 2017, 2018, 2019, 2020
CADILLAC ESCALADE ESV2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE ESV2017, 2018, 2019, 2020
CHEVROLET SUBURBAN2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET TAHOE2015, 2016, 2017, 2018, 2019, 2020
GMC YUKON2015, 2016, 2017, 2018, 2019, 2020
GMC YUKON XL2015, 2016, 2017, 2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
17V0330002017-01-12. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
21-NA-0432025-02-12. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
PI0754G2024-08-17. Service bulletin. This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic.
16-NA-3422024-08-13. Service bulletin. This service bulletin provides a procedure to check the rearview mirror coax connector for looseness by disconnecting and reconnecting the electrical connector to correct the customers concern for the rearview mirror video screen displaying blue.
16-NA-3422024-07-16. Service bulletin. This service bulletin provides a procedure to check the rearview mirror coax connector for looseness by disconnecting and reconnecting the electrical connector to correct the customers concern for the rearview mirror video screen displaying blue.
PIT53472024-04-01. Service bulletin. Sunroof Reverses When Closing At Highway Speeds.
14450A2024-01-16. Service bulletin. Service Update for Inventory and Customer Vehicles Inspect Air Conditioning Refrigerant Warning Label and Adjust Refrigerant Charge
144502024-01-16. Service bulletin. Inspect Air Conditioning Refrigerant Warning Label
PIT5318C2024-01-08. Service bulletin. Wind Buffeting Droan Type Noise And/Or Body Pressure Booming.
PIT5318A2024-01-08. Service bulletin. Wind Buffeting Droan Type Noise And/Or Body Pressure Booming.
PIT53182024-01-08. Service bulletin. Wind Buffeting Droan Type Noise And/Or Body Pressure Booming.