TSB: CADILLAC CORVETTE, CTS, ELR, XLR (2004–2016)

Bulletin 15521 — December 1, 2015

Bulletin Details

Bulletin ID15521
ManufacturerCADILLAC
ModelsCORVETTE, CTS, ELR, XLR
Model Years2004–2016
Date IssuedDecember 1, 2015
Date Added to NHTSADecember 18, 2023
ComponentELECTRICAL SYSTEM
Vehicles Affected225 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

15521 - CUSTOMER ADVISORY LETTER. THIS LETTER IS BEING SENT TO BRING TO THE CUSTOMER'S ATTENTION FEATURES THAT ARE COVERED IN THE VEHICLE'S OWNER MANUAL IN SITUATIONS WHERE THE CUSTOMER VEHICLE SIDE DOORS WILL NOT OPEN FROM INSIDE AND OUTSI

Affected Vehicles

MakeModelYearComponent
CHEVROLET CORVETTE 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2016 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2016 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2016 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2016 140000 AIR BAGS
CHEVROLET CORVETTE 2016 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2016 220000 SEATS
CHEVROLET CORVETTE 2016 350000 EQUIPMENT
CADILLAC ELR 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC ELR 2016 110000 ELECTRICAL SYSTEM
CADILLAC ELR 2016 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC ELR 2016 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC ELR 2016 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC ELR 2016 140000 AIR BAGS
CADILLAC ELR 2016 180000 VEHICLE SPEED CONTROL
CADILLAC ELR 2016 220000 SEATS
CADILLAC ELR 2016 350000 EQUIPMENT
CHEVROLET CORVETTE 2015 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2015 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2015 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2015 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2015 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2015 140000 AIR BAGS
CHEVROLET CORVETTE 2015 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2015 220000 SEATS
CHEVROLET CORVETTE 2015 350000 EQUIPMENT
CADILLAC ELR 2015 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC ELR 2015 110000 ELECTRICAL SYSTEM
CADILLAC ELR 2015 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC ELR 2015 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC ELR 2015 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC ELR 2015 140000 AIR BAGS
CADILLAC ELR 2015 180000 VEHICLE SPEED CONTROL
CADILLAC ELR 2015 220000 SEATS
CADILLAC ELR 2015 350000 EQUIPMENT
CHEVROLET CORVETTE 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2014 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2014 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2014 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2014 140000 AIR BAGS
CHEVROLET CORVETTE 2014 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2014 220000 SEATS
CHEVROLET CORVETTE 2014 350000 EQUIPMENT
CADILLAC CTS 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC CTS 2014 110000 ELECTRICAL SYSTEM
CADILLAC CTS 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC CTS 2014 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC CTS 2014 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC CTS 2014 140000 AIR BAGS
CADILLAC CTS 2014 180000 VEHICLE SPEED CONTROL
CADILLAC CTS 2014 220000 SEATS
CADILLAC CTS 2014 350000 EQUIPMENT
CADILLAC ELR 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC ELR 2014 110000 ELECTRICAL SYSTEM
CADILLAC ELR 2014 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC ELR 2014 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC ELR 2014 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC ELR 2014 140000 AIR BAGS
CADILLAC ELR 2014 180000 VEHICLE SPEED CONTROL
CADILLAC ELR 2014 220000 SEATS
CADILLAC ELR 2014 350000 EQUIPMENT
CHEVROLET CORVETTE 2013 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2013 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2013 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2013 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2013 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2013 140000 AIR BAGS
CHEVROLET CORVETTE 2013 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2013 220000 SEATS
CHEVROLET CORVETTE 2013 350000 EQUIPMENT
CADILLAC CTS 2013 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC CTS 2013 110000 ELECTRICAL SYSTEM
CADILLAC CTS 2013 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC CTS 2013 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC CTS 2013 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC CTS 2013 140000 AIR BAGS
CADILLAC CTS 2013 180000 VEHICLE SPEED CONTROL
CADILLAC CTS 2013 220000 SEATS
CADILLAC CTS 2013 350000 EQUIPMENT
CHEVROLET CORVETTE 2012 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2012 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2012 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2012 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2012 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2012 140000 AIR BAGS
CHEVROLET CORVETTE 2012 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2012 220000 SEATS
CHEVROLET CORVETTE 2012 350000 EQUIPMENT
CADILLAC CTS 2012 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC CTS 2012 110000 ELECTRICAL SYSTEM
CADILLAC CTS 2012 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC CTS 2012 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC CTS 2012 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC CTS 2012 140000 AIR BAGS
CADILLAC CTS 2012 180000 VEHICLE SPEED CONTROL
CADILLAC CTS 2012 220000 SEATS
CADILLAC CTS 2012 350000 EQUIPMENT
CHEVROLET CORVETTE 2011 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2011 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2011 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2011 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2011 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2011 140000 AIR BAGS
CHEVROLET CORVETTE 2011 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2011 220000 SEATS
CHEVROLET CORVETTE 2011 350000 EQUIPMENT
CADILLAC CTS 2011 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC CTS 2011 110000 ELECTRICAL SYSTEM
CADILLAC CTS 2011 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC CTS 2011 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC CTS 2011 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC CTS 2011 140000 AIR BAGS
CADILLAC CTS 2011 180000 VEHICLE SPEED CONTROL
CADILLAC CTS 2011 220000 SEATS
CADILLAC CTS 2011 350000 EQUIPMENT
CHEVROLET CORVETTE 2010 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2010 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2010 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2010 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2010 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2010 140000 AIR BAGS
CHEVROLET CORVETTE 2010 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2010 220000 SEATS
CHEVROLET CORVETTE 2010 350000 EQUIPMENT
CHEVROLET CORVETTE 2009 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2009 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2009 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2009 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2009 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2009 140000 AIR BAGS
CHEVROLET CORVETTE 2009 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2009 220000 SEATS
CHEVROLET CORVETTE 2009 350000 EQUIPMENT
CADILLAC XLR 2009 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2009 110000 ELECTRICAL SYSTEM
CADILLAC XLR 2009 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2009 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC XLR 2009 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC XLR 2009 140000 AIR BAGS
CADILLAC XLR 2009 180000 VEHICLE SPEED CONTROL
CADILLAC XLR 2009 220000 SEATS
CADILLAC XLR 2009 350000 EQUIPMENT
CHEVROLET CORVETTE 2008 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2008 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2008 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2008 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2008 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2008 140000 AIR BAGS
CHEVROLET CORVETTE 2008 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2008 220000 SEATS
CHEVROLET CORVETTE 2008 350000 EQUIPMENT
CADILLAC XLR 2008 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2008 110000 ELECTRICAL SYSTEM
CADILLAC XLR 2008 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2008 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC XLR 2008 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC XLR 2008 140000 AIR BAGS
CADILLAC XLR 2008 180000 VEHICLE SPEED CONTROL
CADILLAC XLR 2008 220000 SEATS
CADILLAC XLR 2008 350000 EQUIPMENT
CHEVROLET CORVETTE 2007 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2007 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2007 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2007 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2007 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2007 140000 AIR BAGS
CHEVROLET CORVETTE 2007 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2007 220000 SEATS
CHEVROLET CORVETTE 2007 350000 EQUIPMENT
CADILLAC XLR 2007 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2007 110000 ELECTRICAL SYSTEM
CADILLAC XLR 2007 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2007 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC XLR 2007 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC XLR 2007 140000 AIR BAGS
CADILLAC XLR 2007 180000 VEHICLE SPEED CONTROL
CADILLAC XLR 2007 220000 SEATS
CADILLAC XLR 2007 350000 EQUIPMENT
CHEVROLET CORVETTE 2006 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2006 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2006 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2006 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2006 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2006 140000 AIR BAGS
CHEVROLET CORVETTE 2006 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2006 220000 SEATS
CHEVROLET CORVETTE 2006 350000 EQUIPMENT
CADILLAC XLR 2006 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2006 110000 ELECTRICAL SYSTEM
CADILLAC XLR 2006 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2006 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC XLR 2006 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC XLR 2006 140000 AIR BAGS
CADILLAC XLR 2006 180000 VEHICLE SPEED CONTROL
CADILLAC XLR 2006 220000 SEATS
CADILLAC XLR 2006 350000 EQUIPMENT
CHEVROLET CORVETTE 2005 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2005 110000 ELECTRICAL SYSTEM
CHEVROLET CORVETTE 2005 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CHEVROLET CORVETTE 2005 116000 ELECTRICAL SYSTEM:IGNITION
CHEVROLET CORVETTE 2005 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CHEVROLET CORVETTE 2005 140000 AIR BAGS
CHEVROLET CORVETTE 2005 180000 VEHICLE SPEED CONTROL
CHEVROLET CORVETTE 2005 220000 SEATS
CHEVROLET CORVETTE 2005 350000 EQUIPMENT
CADILLAC XLR 2005 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2005 110000 ELECTRICAL SYSTEM
CADILLAC XLR 2005 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2005 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC XLR 2005 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC XLR 2005 140000 AIR BAGS
CADILLAC XLR 2005 180000 VEHICLE SPEED CONTROL
CADILLAC XLR 2005 220000 SEATS
CADILLAC XLR 2005 350000 EQUIPMENT
CADILLAC XLR 2004 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2004 110000 ELECTRICAL SYSTEM
CADILLAC XLR 2004 111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
CADILLAC XLR 2004 116000 ELECTRICAL SYSTEM:IGNITION
CADILLAC XLR 2004 116300 ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
CADILLAC XLR 2004 140000 AIR BAGS
CADILLAC XLR 2004 180000 VEHICLE SPEED CONTROL
CADILLAC XLR 2004 220000 SEATS
CADILLAC XLR 2004 350000 EQUIPMENT

Related CADILLAC Recalls

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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized CADILLAC dealer. Bring this bulletin ID (15521) 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.