# Service bulletin 20NA037

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: 10174281
- Published by NHTSA: 2020\-04\-27
- Manufacturer's number: 20NA037
- Manufacturer's date: 2020\-03\-02
- NHTSA component: EQUIPMENT ADAPTIVE/MOBILITY; TRAILER HITCHES; SERVICE BRAKES; ELECTRICAL SYSTEM:WIRING

## NHTSA's summary

This technical bulletin is providing a procedure to add additional sealant after repairing a trailer wiring harness with the condition of Unable to Start/Shut Off Vehicle, Extended Engine Crank Prior to Start, Battery Drain, Tail Lamps Inoperative, Unintended Brake Pedal Movement During Operation, and/or Traction Control/Stability System/ABS Indicators Illuminated due to water intrusion.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10174281-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10174281-9999.pdf)

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

## Components

Brakes, Electrical system, Equipment and accessories, Trailer hitch, Wiring and fuses

## Vehicles listed

- 2017 to 2019 CADILLAC ESCALADE
- 2017 to 2019 CADILLAC ESCALADE ESV

## Other bulletins for the same vehicles and component

- [PIT5556A](/bulletins/10211771.md), 2022-05-16, Service bulletin: ELECTRICAL SYSTEM:WIRING. This Preliminary information communicates an issue where the chassis wiring harness can chaff on the underbody of the vehicle causing a wide varied of issues, depending on which wire\(s\) is chaffed. Repair the affected wiring as needed
- [PIT5556A](/bulletins/10173717.md), 2020-04-13, Service bulletin: SUSPENSION; ELECTRICAL SYSTEM:WIRING; STEERING. This Preliminary information communicates an issue where the chassis wiring harness can chaff on the underbody of the vehicle causing a wide varied of issues, depending on which wire\(s\) is chaffed. Repair the affected wiring as needed
- [100089005G](/bulletins/10159575.md), 2019-05-13, Service bulletin: ELECTRICAL SYSTEM:WIRING. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
- [100089005H](/bulletins/10154629.md), 2019-03-18, Service bulletin: ELECTRICAL SYSTEM:WIRING. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
- [PIP5335B](/bulletins/10143439.md), 2018-08-06, Service bulletin: ELECTRICAL SYSTEM:WIRING. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Codes P0340 and P0341 setting at times. Technician should use normal published Service Information diagnostics. If normal Service Information diagnostics does not isolate the concern, inspect for corrosion in connector X154 located on the front cover next to the vacuum pump.
- [18NA025](/bulletins/10139271.md), 2018-06-04, Service bulletin: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM:WIRING. This technical bulletin provides a procedure to reposition the instrument panels wiring harness and trim floor liners if not fitting properly after the harnesses have been repositioned.
- [18NA079](/bulletins/10137306.md), 2018-05-21, Service bulletin: VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM:WIRING; STRUCTURE:BODY:DOOR. This technical bulletin provides a procedure to replace the drivers front door window regulator motor and door wiring harness if water and/or corrosion is found in the connectors.
- [10\-00\-89\-005F](/bulletins/10118545.md), 2017-10-05, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:WIRING. This informational bulletin provides warranty policy information on revised wiring repair labor operations and required additional information.
- [PIT5317A](/bulletins/10114859.md), 2017-08-15, Service bulletin: STRUCTURE; ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS; ELECTRICAL SYSTEM. This Preliminary information communication provides information to the technician about vehicles with the rear body fuse block with a loose fuse connection. Technician will need to check terminal tension on the rear fuse block. Technician will need to replace the rear body fuse block if poor terminal tension is the issue. Technician will need to replace the appropriate terminated lead if something other than the main power buss bar has poor terminal tension.
- [PIT5487B](/bulletins/10111710.md), 2017-08-15, Service bulletin: ELECTRICAL SYSTEM:WIRING; STRUCTURE:BODY:BUMPERS; BACK OVER PREVENTION. This Preliminary Information communication provides information to the technician about vehicles that may have multiple messages on the driver information center Service Parking Assist System, Service Adaptive Cruise Control, Service Surround Vision Camera, and Service Driver Assist Message. The Front park, turn signal, day time running lights, and/or cornering lights may be inoperative. Some fuses may be blown F10DL, F19DR, F43UA, and/or F46DR. Also these diagnostic trouble codes may be set U0075, U209E, U026A, U026B, U026C, U0265, U0268, and/or U0269. These concerns could be caused by the fascia harness shorted at the end of the right front bumper bar. The front fascia may need to be removed to make repairs to the wiring harness if any damage is found. Technician will also relocate the harness to prevent the concern in the future.

JSON: [/v1/bulletins/10174281](/v1/bulletins/10174281)

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