Service Engine Mount Does Not Have an Active Mount Solenoid – DTC C11F0 and/or C11F1 Set – 2020 Chevrolet Silverado & GMC Sierra 1500

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Service Bulletin Bulletin No.: 21-NA-072
Date: March, 2021
INFORMATION
Subject: Information On Service Engine Mount Does Not Have an Active Mount Solenoid – DTC
C11F0 and/or C11F1 Set
Brand: Model:
Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Silverado 1500
2020 2020 LM2 –
GMC Sierra 1500
Involved Region or Country North America
Condition
Some technicians may find when replacing the engine mounts, that the new mounts are
non-solenoid style mounts.
Some technicians may also find DTC C11F0 and/or C11F1 set.
Correction
Only the affected active mount needs to be replaced. The unaffected mount can be left as
is with the wiring connected unless it also has a need for replacement.
Important: This procedure only applies to mounts that are being replaced for failure or
damage. Do not replace mounts or use this procedure unless the mount itself has failed.
Mounts replaced that are not failed are not covered by the warranty. Any unaffected
mount can be left as is with the wiring connected, unless it also has a need for
replacement.
5777985
Note: The electrical connector at the solenoid engine mount will need to be cut off and
secured in a manor so to avoid water intrusion. Perform the following steps in addition to
replacing the engine mounts.
1. Cut off solenoid connector.
2. Crimp a salmon Duraseal splice sleeve onto the terminated lead.
Page 2 March, 2021 Bulletin No.: 21-NA-072
3. Utilizing the Ultra torch or equivalent, shrink the spice sleeve around the wire and
also seal the open end.
4. Tape the wire to the harness with Woven Polyester Electrical Tape (PET).
Information
DTC C11F0 and/or C11F1 will set when the mounts are
disconnected. These are type “C” DTCs and should be
ignored, no impact on performance, no MIL displayed.
Only the affected active mount needs to be replaced,
the unaffected mount can be left as is with the wiring
connected unless it also has a need for replacement.
Parts Information
Causal
Part
Description Part
Number
Qty
N/A SPLICE, WIRE
(SALMON) 13575368 1
N/A
Woven Polyester
(PET)
Electrical Tape**
1985620
(USA)*
894.1230
(Canada)*
1
*There is enough material to service multiple vehicles. Store
the remaining material for future use.
**For USA, contact Wurth through their website at
www.wurthusa.com, by e-mail at
[email protected], or by calling 1-800-
987-8487.
For Canada, contact Wurth through their website at
www.wurth.ca/, by e-mail at [email protected], or by calling 1-
800-263-5002 or your local Wurth rep.
Version 1
Modified Released March 24, 2021

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