Hood Ajar Message Displayed on Driver Information Center (DIC), Hood May Not Open Using Any Electrical Release Buttons, But Will Open Using Manual Release Cable – 2020-2021 Chevrolet Corvette

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Service Bulletin Bulletin No.: 21-NA-094
Date: May, 2021
TECHNICAL
Subject: Hood Ajar Message Displayed on Driver Information Center (DIC), Hood May Not Open
Using Any Electrical Release Buttons, But Will Open Using Manual Release Cable
Brand: Model:
Model Year: VIN:
Engine: Transmission:
from to from to
Chevrolet Corvette 2020 2021 — — All All
Involved Region or Country North America, Middle East, Japan
Condition
Some customers may comment on a hood ajar message displayed on the DIC. The hood
may not open using any of the electrical release buttons but will open using manual
release cable.
Cause
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Page 2 May, 2021 Bulletin No.: 21-NA-094
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The cause of the condition may be any, or a combination of, the bullets listed below:
• Possible water intrusion and terminal corrosion into connector X103.
• Water intrusion into the hood latch actuator itself.
• Failure of the auxiliary hood latch release switch.
Correction Verify the Condition and repair following the steps in the Service Procedure below.
Bulletin No.: 21-NA-094 May, 2021 Page 3
Service Procedure
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1. Remove the front compartment front panel (1).
Refer to the appropriate Front Compartment Front
Panel Replacement in SI.
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Page 4 May, 2021 Bulletin No.: 21-NA-094
2. Inspect connector X103 for possible terminal
corrosion.
• If corrosion IS noted at connector X103, replace
the connector as necessary. Refer to the
appropriate connector replacement procedure
in SI. After completion of the connector repair,
continue ahead to step # 3.
• If NO corrosion is noted at connector X103,
continue ahead to step # 3.
3. Access the hood switch connector (X102):
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3.1. Remove the left horn (2). Refer to Horn
Replacement in SI.
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3.2. Test the auxiliary hood latch release switch
with an ohmmeter. The switch should be open
when it’s not pressed and resistance should
be no more than .2 ohm, when the switch is
pressed.
• If the auxiliary hood latch release switch
passes the test, continue ahead to step
# 3.3.
• If the auxiliary hood latch release switch
fails the test, replace the switch. Refer to
Auxiliary Hood Latch Release Switch in SI.
After switch replacement, continue ahead
to step # 3.3.
3.3. Reinstall the left horn. Refer to Horn
Replacement in SI.
Bulletin No.: 21-NA-094 May, 2021 Page 5
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4. Remove the hood latch actuator. Refer to the
appropriate Hood Latch Actuator Replacement
in SI.
Important: When reinstalling the front compartment
front panel, ensure that the X103 connector is
positioned below the right horn connector.
5. Install the new hood latch actuator service part.
Refer to the appropriate Hood Latch Actuator
Replacement in SI.
Parts Information
Causal
Part
Description Part
Number
Qty
X ACTUATOR
ASM-HOOD LAT 84806924 1
N/A SWITCH ASMHOOD
LAT REL 84720368 1, If
necessary
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.
Labor
Operation
Description Labor Time
1481538*
Hood Latch Actuator
Replacement, Includes
Test Auxiliary Hood Latch
Release Switch
1.7 hrs
Add
New Auxiliary Hood Latch
Release Switch
Replacement
1.0 hr
5430880 Connector with Leads
Assembly Replacement
Use Published
Labor
Operation
Time
*This is a unique Labor Operation for bulletin use only.
Version 1
Modified Released May 20, 2021

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