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Service bulletin 21NA218

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 id10207913
Published by NHTSA2022-02-14
Manufacturer's number21NA218
Manufacturer's date2021-12-09
NHTSA componentUNKNOWN OR OTHER; EXTERIOR LIGHTING

NHTSA's summary

This bulletin provides a diagnostic service procedure to correct customer concerns of Reduced Propulsion (EREV), Malfunction Indicator Lamp (MIL) Illuminated with DTC P0C17, P1B03 and/or P0C01 Set.

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

Lighting

Trouble codes named

P0C01, P0C17, P1B03

Vehicles listed
CADILLAC ELR2014, 2015, 2016
CHEVROLET VOLT2011, 2012, 2013, 2014, 2015

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

Recalls for the same vehicles and component
20114122011-11-23. Lights And Instruments

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
01-08-42-001Q2025-02-11. Service bulletin. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
02-08-42-001J2024-01-19. Service bulletin. This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
130089004H2023-12-11. Service bulletin. Car and Truck Fix it Right the First Time Issues
120941002B2023-12-04. Service bulletin. Passenger Presence System (PPS) May Command Seat Belt Reminder Chime Passenger Airbag Indicator On When Electronic Devices or Conductive Objects are Placed on Front Passenger Seat
1209410022023-12-04. Service bulletin. Passenger Presence System (PPS) May Command Seat Belt Reminder Chime Passenger Airbag Indicator On When Electronic Devices or Conductive Objects are Placed on Front Passenger Seat
01-08-42-001P2023-05-09. Service bulletin. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
PIC6089B2023-04-17. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that may have a Battery Saver Message or red Battery Indicator displayed in the Driver Information Center. Technician may find Diagnostic Trouble Code P0AF8 set in history. Technician will need to the 12 volt battery using the GR8 Battery tester. The technician will need to perform the Direct current Power Conversion Test published in Global Service Information to check for maximum current and voltage output. This test requires the use of a Carbon Pyle load tester. In addition, the technician can select the 14V Power Module Control Function in the Engine Control Module and Accessory Power Module Setpoint in the Body Control Module by using the Scan Tool in order to check that the system is able to respond to current loads. If the test fails, if there were low voltage Diagnostic Trouble Codes or P0AF8 was set, the technician should confirm that the 200 amp fuse located in the X50D Fuse Block is torqued to correct specification. Technician should check the voltage on both sides of the 200 amp Fuse while there is a load applied and comparing the voltage readings. Voltage drop can be checked from the positive battery post to the Accessory Power Module side of the 200 amp fuse as well. If the Accessory Power Module will output current under a load but the voltage is low on both sides of the fuse when compared to the voltage output at the Accessory Power Module, check the following Service Information for any other Diagnostic Trouble Codes that may have led to the low voltage condition, Accessory Power Module output terminal is clean and torqued to specification, The Accessory Power Module output cable ring terminal is properly seated to the Accessory Power Module output terminal post and its condition, and test the voltage drop on the ground cables to the engine block, transmission, body and chassis to ensure they are within specification.
01-08-42-001O2023-02-28. Service bulletin. This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.
010842001N2021-08-09. Service bulletin. This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.
010842001M2019-12-16. Service bulletin. This informational bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Replacement Guidelines.