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Service bulletin N202318400

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 id10187210
Published by NHTSA2021-02-16
Manufacturer's numberN202318400
Manufacturer's date2020-12-14
NHTSA componentBACK OVER PREVENTION; TRAILER HITCHES

NHTSA's summary

Service Update Bulletin. In certain vehicles, the rear trailer hitch cover may be warped and loose. A rattling noise may occur, and in some cases, the cover may fall off of the vehicle. Dealers are to inspect the rear bumper fascia trailer hitch cover and replace if necessary.

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

Driver assistance, Trailer hitch, Backup camera

Vehicles listed
CHEVROLET BLAZER2020

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

Other bulletins for the same vehicles and component
PIT5931C2023-12-04. Service bulletin. This Preliminary information communicates that a vehicle may be encountered with a clunk or rattle from the front of the vehicle. The dealer technician is instructed to remove the cradle brace and see if the noise is gone. If the noise is gone with the brace removed the tech is instructed to reinstall the brace and torque it to specification.
PIT5931B2023-12-04. Service bulletin. This Preliminary information communicates that a vehicle may be encountered with a clunk or rattle from the front of the vehicle. The dealer technician is instructed to remove the cradle brace and see if the noise is gone. If the noise is gone with the brace removed the tech is instructed to reinstall the brace and torque it to specification.
23-NA-0622023-06-19. Service bulletin. This service bulletin provides repair information to correct a customer concern of Rear View Camera Issues - DTCs B395A, B395B, B395C, B101E, B101D.
23-NA-0622023-04-14. Service bulletin. This service bulletin provides repair information to correct a customer concern of Rear View Camera Coaxial Related Issues - DTCs B395A, B395B, B395C, B101E, B101D.
PIP56232023-03-13. Service bulletin. This Preliminary information communicates that a rotational clicking noise heard after engine shut down is a design characteristic and no repairs should be attempted.
PIT5921A2023-03-13. Service bulletin. This Preliminary information communicates diagnostics aids for rear view camera issues that may be encountered.
PIT5931A2022-10-17. Service bulletin. This Preliminary information communicates that a vehicle may be encountered with a clunk or rattle from the front of the vehicle. The dealer technician is instructed to remove the cradle brace and see if the noise is gone. If the noise is gone with the brace removed the tech is instructed to reinstall the brace and torque it to specification.
PIT59212022-07-25. Service bulletin. This Preliminary information communicates diagnostics aids for rear view camera issues that may be encountered.
PIP5841A2022-06-13. Service bulletin. This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
070601016G2022-06-13. Service bulletin. This informational bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.