Pickup Box Out of Alignment – 2019-2021 Chevrolet Silverado & GMC Sierra 1500

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Service Bulletin Bulletin No.: 19-NA-257
Date: December, 2020
TECHNICAL
Subject: Pickup Box Out of Alignment
Brand: Model:
Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet
Silverado 1500 (New
Model) 2019 2019
All All
Silverado 1500 2020 2021
GMC
Sierra 1500 (New
Model) 2019 2019
Sierra 1500 2020 2021
Involved Region or Country North America, Middle East, Chile, Paraguay, Uruguay, Thailand, and Israel.
Additional Options (RPOs)
Condition
5442974
The pickup box appears to be out of alignment from side to side of the truck. The
condition is more noticeable from rear of truck, down the side.
Cause The cause of the condition may be the pickup box was misaligned from the assembly
plant.
Correction Adjust the pickup box to within tolerance, following the steps in the Service Procedure
below.
Page 2 December, 2020 Bulletin No.: 19-NA-257
Service Procedure
5442975
Note: Measure the cab to box distance on both sides
of the vehicle.
1. Using a straight edge on the side of the cab corner
at the upper body line, measure the distance to the
pickup box. The box should be sub-flush with cab
and within 2.5 mm (0.10 in) total difference side
to side.
• If the box is sub-flush AND the distances ARE
within the 2.5 mm (0.10 in) range side to side,
no box alignment is necessary.
• If the box IS NOTsub-flush AND the distances
ARE NOT within the 2.5 mm (0.10 in) range
side to side, continue on to the box alignment
procedure.
5442976
2. To prevent damage to the painted surfaces, apply
tape/protection to the areas where the pickup box,
cab and rear bumper would meet,
Bulletin No.: 19-NA-257 December, 2020 Page 3
4998458
3. Remove the 4 rear pickup box bolts (1) and clean
any sealer that may prevent movement between
the bolt and frame. Reinstall the bolts and hand
turn a couple of turns.
Page 4 December, 2020 Bulletin No.: 19-NA-257
4998459
Note: Long pickup box shown above, has 4 front bolts,
short box only has 2.
4. Remove the front pickup box bolts (1) and clean
any sealer that may prevent movement between
the bolt and frame. Reinstall the bolts and hand
turn a couple of turns.
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Note: If box alignment is limited due to locating pins in
the bed preventing correct alignment, the front locating
pin can be removed.
5. Remove the front bed to frame locator pin, as
necessary.
6. Align the pickup box to within specifications. Box
should be sub-flush with cab and within 2.5 mm
(0.10 in) total difference side to side.
7. Tighten all pickup box bolts. Refer to Fastener
Specifications in the Body Repair section in SI, for
proper Torque specifications
8. Remove any tape/protection that was applied.
Parts Information
No parts are required for this repair.
Warranty Information
For vehicles repaired under the Bumper-to-Bumper
coverage (Canada Base Warranty coverage), use the
following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH)
for coverage information.
Bulletin No.: 19-NA-257 December, 2020 Page 5
Labor Operation Description Labor Time
1481268* Pickup Box Alignment 0.4 hr
*This is a unique Labor Operation for Bulletin use only.
Version 2
Modified Released November 19, 2019
Revised December 21, 2020 – Added 2021 Model Year and Added Israel to Export
Countries

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