TSB: BUICK BOLT EV, CT6, ELR, IMPALA, LACROSSE, MALIBU, REGAL, SIERRA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO, SILVERADO 1500, SILVERADO 2500, SILVERADO 4500HD, SPARK EV, VOLT (2011–2020)

Bulletin 18NA180 — March 20, 2019

Bulletin Details

Bulletin ID18NA180
ManufacturerBUICK
ModelsBOLT EV, CT6, ELR, IMPALA, LACROSSE, MALIBU, REGAL, SIERRA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO, SILVERADO 1500, SILVERADO 2500, SILVERADO 4500HD, SPARK EV, VOLT
Model Years2011–2020
Date IssuedMarch 20, 2019
Date Added to NHTSAMay 26, 2020
ComponentELECTRICAL SYSTEM
Vehicles Affected161 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

This Warranty Administration Bulletin Provides High Voltage Battery Exchange Process Information.

Affected Vehicles

MakeModelYearComponent
CHEVROLET BOLT EV 2020 110000 ELECTRICAL SYSTEM
CHEVROLET BOLT EV 2020 350000 EQUIPMENT
CADILLAC CT6 2020 110000 ELECTRICAL SYSTEM
CADILLAC CT6 2020 350000 EQUIPMENT
CHEVROLET SILVERADO 1500 2020 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 1500 2020 350000 EQUIPMENT
CHEVROLET BOLT EV 2019 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET BOLT EV 2019 110000 ELECTRICAL SYSTEM
CHEVROLET BOLT EV 2019 350000 EQUIPMENT
CADILLAC CT6 2019 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC CT6 2019 110000 ELECTRICAL SYSTEM
CADILLAC CT6 2019 350000 EQUIPMENT
BUICK LACROSSE 2019 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK LACROSSE 2019 110000 ELECTRICAL SYSTEM
BUICK LACROSSE 2019 350000 EQUIPMENT
GMC SIERRA 1500 2019 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
GMC SIERRA 3500 2019 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
GMC SIERRA DENALI 2019 110000 ELECTRICAL SYSTEM
GMC SIERRA DENALI 2019 350000 EQUIPMENT
CHEVROLET SILVERADO 2500 2019 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET SILVERADO 2500 2019 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 2500 2019 350000 EQUIPMENT
CHEVROLET SILVERADO 4500HD 2019 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET SILVERADO 4500HD 2019 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 4500HD 2019 350000 EQUIPMENT
CHEVROLET VOLT 2019 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET VOLT 2019 110000 ELECTRICAL SYSTEM
CHEVROLET VOLT 2019 350000 EQUIPMENT
CHEVROLET BOLT EV 2018 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET BOLT EV 2018 110000 ELECTRICAL SYSTEM
CHEVROLET BOLT EV 2018 350000 EQUIPMENT
CADILLAC CT6 2018 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC CT6 2018 110000 ELECTRICAL SYSTEM
CADILLAC CT6 2018 350000 EQUIPMENT
BUICK LACROSSE 2018 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK LACROSSE 2018 110000 ELECTRICAL SYSTEM
BUICK LACROSSE 2018 350000 EQUIPMENT
CHEVROLET MALIBU 2018 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET MALIBU 2018 110000 ELECTRICAL SYSTEM
CHEVROLET MALIBU 2018 350000 EQUIPMENT
GMC SIERRA 2500 2018 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
GMC SIERRA 2500 2018 110000 ELECTRICAL SYSTEM
GMC SIERRA 2500 2018 350000 EQUIPMENT
GMC SIERRA DENALI 2018 110000 ELECTRICAL SYSTEM
GMC SIERRA DENALI 2018 350000 EQUIPMENT
CHEVROLET SILVERADO 1500 2018 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 1500 2018 350000 EQUIPMENT
CHEVROLET SILVERADO 2500 2018 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET SILVERADO 2500 2018 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 2500 2018 350000 EQUIPMENT
CHEVROLET VOLT 2018 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET VOLT 2018 110000 ELECTRICAL SYSTEM
CHEVROLET VOLT 2018 350000 EQUIPMENT
CHEVROLET BOLT EV 2017 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET BOLT EV 2017 110000 ELECTRICAL SYSTEM
CHEVROLET BOLT EV 2017 350000 EQUIPMENT
CADILLAC CT6 2017 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC CT6 2017 110000 ELECTRICAL SYSTEM
CADILLAC CT6 2017 350000 EQUIPMENT
CHEVROLET MALIBU 2017 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET MALIBU 2017 110000 ELECTRICAL SYSTEM
CHEVROLET MALIBU 2017 350000 EQUIPMENT
BUICK REGAL 2017 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK REGAL 2017 110000 ELECTRICAL SYSTEM
BUICK REGAL 2017 350000 EQUIPMENT
GMC SIERRA 2017 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
GMC SIERRA 2500 2017 110000 ELECTRICAL SYSTEM
GMC SIERRA 2500 2017 350000 EQUIPMENT
GMC SIERRA DENALI 2017 110000 ELECTRICAL SYSTEM
GMC SIERRA DENALI 2017 350000 EQUIPMENT
CHEVROLET SILVERADO 2017 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET SILVERADO 1500 2017 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 1500 2017 350000 EQUIPMENT
CHEVROLET SILVERADO 2500 2017 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 2500 2017 350000 EQUIPMENT
CHEVROLET VOLT 2017 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET VOLT 2017 110000 ELECTRICAL SYSTEM
CHEVROLET VOLT 2017 350000 EQUIPMENT
CADILLAC ELR 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC ELR 2016 110000 ELECTRICAL SYSTEM
CADILLAC ELR 2016 350000 EQUIPMENT
BUICK LACROSSE 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK LACROSSE 2016 110000 ELECTRICAL SYSTEM
BUICK LACROSSE 2016 350000 EQUIPMENT
CHEVROLET MALIBU 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET MALIBU 2016 110000 ELECTRICAL SYSTEM
CHEVROLET MALIBU 2016 350000 EQUIPMENT
BUICK REGAL 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK REGAL 2016 110000 ELECTRICAL SYSTEM
BUICK REGAL 2016 350000 EQUIPMENT
GMC SIERRA 2500 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
GMC SIERRA 2500 2016 110000 ELECTRICAL SYSTEM
GMC SIERRA 2500 2016 350000 EQUIPMENT
GMC SIERRA DENALI 2016 110000 ELECTRICAL SYSTEM
GMC SIERRA DENALI 2016 350000 EQUIPMENT
CHEVROLET SILVERADO 2500 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET SILVERADO 2500 2016 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 2500 2016 350000 EQUIPMENT
CHEVROLET SPARK EV 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET SPARK EV 2016 110000 ELECTRICAL SYSTEM
CHEVROLET SPARK EV 2016 350000 EQUIPMENT
CHEVROLET VOLT 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET VOLT 2016 110000 ELECTRICAL SYSTEM
CHEVROLET VOLT 2016 350000 EQUIPMENT
CADILLAC ELR 2015 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC ELR 2015 110000 ELECTRICAL SYSTEM
CADILLAC ELR 2015 350000 EQUIPMENT
BUICK LACROSSE 2015 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK LACROSSE 2015 110000 ELECTRICAL SYSTEM
BUICK LACROSSE 2015 350000 EQUIPMENT
BUICK REGAL 2015 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK REGAL 2015 110000 ELECTRICAL SYSTEM
BUICK REGAL 2015 350000 EQUIPMENT
CHEVROLET SPARK EV 2015 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET SPARK EV 2015 110000 ELECTRICAL SYSTEM
CHEVROLET SPARK EV 2015 350000 EQUIPMENT
CHEVROLET VOLT 2015 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET VOLT 2015 110000 ELECTRICAL SYSTEM
CHEVROLET VOLT 2015 350000 EQUIPMENT
CADILLAC ELR 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC ELR 2014 110000 ELECTRICAL SYSTEM
CADILLAC ELR 2014 350000 EQUIPMENT
CHEVROLET IMPALA 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET IMPALA 2014 110000 ELECTRICAL SYSTEM
CHEVROLET IMPALA 2014 350000 EQUIPMENT
BUICK LACROSSE 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK LACROSSE 2014 110000 ELECTRICAL SYSTEM
BUICK LACROSSE 2014 350000 EQUIPMENT
CHEVROLET MALIBU 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET MALIBU 2014 110000 ELECTRICAL SYSTEM
CHEVROLET MALIBU 2014 350000 EQUIPMENT
BUICK REGAL 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK REGAL 2014 110000 ELECTRICAL SYSTEM
BUICK REGAL 2014 350000 EQUIPMENT
CHEVROLET SPARK EV 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET SPARK EV 2014 110000 ELECTRICAL SYSTEM
CHEVROLET SPARK EV 2014 350000 EQUIPMENT
BUICK LACROSSE 2013 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK LACROSSE 2013 110000 ELECTRICAL SYSTEM
BUICK LACROSSE 2013 350000 EQUIPMENT
CHEVROLET MALIBU 2013 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET MALIBU 2013 110000 ELECTRICAL SYSTEM
CHEVROLET MALIBU 2013 350000 EQUIPMENT
BUICK REGAL 2013 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK REGAL 2013 110000 ELECTRICAL SYSTEM
BUICK REGAL 2013 350000 EQUIPMENT
CHEVROLET VOLT 2013 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET VOLT 2013 110000 ELECTRICAL SYSTEM
CHEVROLET VOLT 2013 350000 EQUIPMENT
BUICK LACROSSE 2012 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK LACROSSE 2012 110000 ELECTRICAL SYSTEM
BUICK LACROSSE 2012 350000 EQUIPMENT
BUICK REGAL 2012 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
BUICK REGAL 2012 110000 ELECTRICAL SYSTEM
BUICK REGAL 2012 350000 EQUIPMENT
CHEVROLET VOLT 2012 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET VOLT 2012 110000 ELECTRICAL SYSTEM
CHEVROLET VOLT 2012 350000 EQUIPMENT
CHEVROLET VOLT 2011 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET VOLT 2011 110000 ELECTRICAL SYSTEM
CHEVROLET VOLT 2011 350000 EQUIPMENT

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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized BUICK dealer. Bring this bulletin ID (18NA180) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.