#21-NA-077 - Information on Aero Shutter Related Diagnostic Codes - (Jun 9, 2022)

Subject:
Information on Aero Shutter Related Diagnostic Codes

Brand:

Model:

Model Year:

Date Breakpoint:

Engine:

Transmission:

from

to

from

to

Cadillac

Escalade Models

2019

2021

SOP

June 30, 2021

All

All

Chevrolet

Silverado 1500 (New Model)

2019

2019...

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Document Title: #21-NA-077 - Information on Aero Shutter Related Diagnostic Codes - (Jun 9, 2022)

information

aero

shutter

codes

model

engine

june

silverado

sierra

additional

condition

check

operation

debris

following

service

important

laws

applicable

bulletin

apply

issue

upper

lower

part

replaced

present

fuse

ensure

loose

continuity

wiring

harness

resistances

corrosion

found

repair

report

failure

occurred

photos

click

size

splice

repaired

replace

section

engagement

jumper

actuators

soft

connection

functionally

test

assembly

open

twice

stoppages

connector

water

intrusion

additionally

signs

seal

damaged

dielectric

grease

proceed

equipped

passenger

louvre

vane

intentionally

missing

airflow

reason

remove

disengaged

linkage

vehicle

engage

binding

located

horn

bracket

clearance

clear

louver

modification

warranty

coverage

labor

revised

updated

added

service information

following check

check fuse

fuse aero

aero shutters

check continuity

engine wiring

resistances present

present wiring

wiring corrosion

repair harness

check engagement

jumper harness

harness shutter

shutter actuators

actuators ensure

ensure soft

continuity jumper

harness aero

found replace

replace aero

shutter wiring

test shutter

shutter assembly

twice shutters

shutters open

open stoppages

stoppages replace

replace shutter

assembly replaced

replaced check

corrosion water

additionally check

check connectors

connectors aero

signs water

water corrosion

corrosion check

check seal

seal condition

condition connectors

connectors damaged

damaged apply

apply dielectric

grease connector

connector corrosion

corrosion present

present proceed

proceed replace

following vehicles

equipped upper

lower shutters

shutters upper

upper shutter

missing shutter

assembly airflow

reasons replace

shutter reason

check debris

debris upper

vane disengaged

vehicle shutter

shutter condition

condition engage

engage louvre

vane shutter

check upper

upper upper

lower shutter

debris present

clear debris

debris louvre

assembly replace

shutter louver

labor operation

aero shutter related

shutter related diagnostic

related diagnostic codes

check aero shutter

aero shutter operation

model silverado sierra

following check fuse

check fuse aero

fuse aero shutters

aero shutters ensure

shutters ensure loose

check continuity engine

continuity engine wiring

engine wiring harness

harness resistances present

resistances present wiring

present wiring corrosion

wiring corrosion found

found repair harness

click size check

splice repair splice

check engagement jumper

engagement jumper harness

jumper harness shutter

harness shutter actuators

shutter actuators ensure

actuators ensure soft

ensure soft connection

check continuity jumper

continuity jumper harness

jumper harness aero

harness aero shutters

aero shutters resistances

shutters resistances present

corrosion found replace

found replace aero

replace aero shutter

aero shutter wiring

functionally test shutter

test shutter assembly

shutter assembly open

open twice shutters

twice shutters open

shutters open stoppages

open stoppages replace

stoppages replace shutter

replace shutter assembly

shutter assembly replaced

assembly replaced check

corrosion water intrusion

intrusion additionally check

additionally check connectors

check connectors aero

connectors aero shutter

signs water corrosion

water corrosion check

corrosion check seal

check seal condition

seal condition connectors

condition connectors damaged

connectors damaged apply

damaged apply dielectric

apply dielectric grease

dielectric grease connector

grease connector corrosion

connector corrosion present

corrosion present proceed

present proceed replace

proceed replace shutter

following vehicles equipped

vehicles equipped upper

equipped upper lower

upper lower shutters

lower shutters upper

shutters upper shutter

intentionally missing shutter

missing shutter assembly

shutter assembly airflow

assembly airflow reasons

airflow reasons replace

reasons replace shutter

replace shutter reason

check debris upper

debris upper lower

lower shutters found

shutters found remove

found remove debris

louvre vane disengaged

vane disengaged linkage

linkage vehicle shutter

vehicle shutter condition

shutter condition engage

condition engage louvre

engage louvre vane

louvre vane shutter

vane shutter assembly

check upper shutter

upper upper shutter

upper shutter binding

shutter binding horn

binding horn bracket

horn bracket located

bracket located passenger

located passenger upper

passenger upper upper

upper shutter click

shutter click size

click size important

size important ensure

clearance shutter vane

shutter vane horn

vane horn bend

horn bend horn

bend horn bracket

horn bracket shutter

static clearance achieved

clearance achieved functionally

achieved functionally test

assembly hand compressed

shutter vehicle clear

vehicle clear debris

debris louvre vane

shutter assembly replace

assembly replace shutter

clear debris present

lower shutter louver

shutter louver modification

louver modification found

modification found bulletin

complete lower shutter

resistance present wiring

connector corrosion water

added graphic detail