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NHTSA ID Number: 10178264
Manufacturer Communication Number: 20NA059
Summary
This technical bulletin provides repair information to correct a customer concern of the pickup box endgate will not fully close by itself.
6 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| CHEVROLET | SILVERADO 1500 | 2019-2020 |
| CHEVROLET | SILVERADO 2500 | 2020 |
| GMC | SIERRA 1500 | 2019-2020 |
| GMC | SIERRA 2500 | 2020 |
SEOCONTENT-START
Copyright 2020 General Motors LLC. All Rights Reserved.
Service B n
Bulletin No.: 20-NA-059
Date: June, 2020
TECHNICAL
Subject: Pickup Box Endgate Will Not Fully Close by Itself
Model:
Silverado 1500 (New Model)
Sierra 1500 (New Model)
Silverado 1500
Model Year: from to
2019 2019
Date Breakpoint: from to
l
All
3500HD
Sierra 1500
Sierra 2500HD/ 3500HD
Involved Region or Country Additional Options (RPOs)
Condition Cause
Preliminary Procedure
North America, Middle East, Israel
Equipped with GATE FUNCTION-POWER (QT6).
Some customers may comment that the power up/down pickup box endgate will not fully close when
using the power option.
The cause of the condition may be the endgate may be misaligned, causing a bind.
Some vehicles, which have a tonneau cover installed, may be affected by a similar Condition,
however the Cause and Correction are completely different from this bulletin. On these vehicles, it
will be necessary rule out the tonneau cover as the possible Cause of the condition:
1. Open the rear end panel of the tonneau cover.
2. Cycle the power tailgate 5 times using push button activation for auto open and close.
• If the power endgate Does function properly, DO NOT proceed with this bulletin repair, but move
on to Bulletin # 20–NA-044 and complete the tonneau adjustment procedure.
• If the power endgate still DOES NOT function properly, continue on and complete the Correction
outlined in this bulletin.
Correction
4992376
Upon verifying the condition, adjust the endgate (1). Refer to Endgate Adjustment, in SI.
Parts Information
No parts are required for this repair.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
1414652
Description
Endgate Adjustment
Labor Time
Use Published Labor Operation Time
Version Modified
2
Released March 06, 2020
Revised June 04, 2020 – Added Preliminary Procedure before Correction
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.
WE SUPPORT VOLUNTARY TECHNICIAN
CERTIFICATION
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 20-NA-059
Date: June, 2020
https://www.nhtsa.gov/recalls?nhtsaId=10178264
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