# Service bulletin 15521 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. - Type: Service bulletin - NHTSA id: 10089427 - Published by NHTSA: 2017\-01\-24 - Manufacturer's number: 15521 - Manufacturer's date: 2015\-12\-01 - NHTSA component: ELECTRICAL SYSTEM:12V/24V/48V BATTERY ## NHTSA's 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 OUTSIDE THE VEHICLE DUE TO LOW OR NO BATTERY VOLTAGE. DEALERS ARE ALSO INSTRUCTED THAT IN CORRELATION WITH THIS CUSTOMER ADVISORY LETTER, A WEB\-BASED TRAINING COURSE WILL BE REQUIRED FOR ALL CADILLAC AND CHEVROLET SALES CONSULTANTS, SALES MANAGERS, SERVICE CONSULTANTS, SERVICE MANAGERS, AND FIELD STAFF BEGINNING Q1 2016 VIA THE GM CENTER OF LEARNING. ## The document No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number. ## Components Electrical system, 12\-volt battery ## Vehicles listed - 2011 to 2014 CADILLAC CTS - 2014 to 2016 CADILLAC ELR - 2004 to 2009 CADILLAC XLR - 2005 to 2016 CHEVROLET CORVETTE ## Other bulletins for the same vehicles and component - [20\-NA\-132](/bulletins/10252774.md), 2024-04-05, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements. - [PIT5074H](/bulletins/10247061.md), 2023-12-11, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. J\-35616\-64B Terminal Test Probe / Replacement Terminal / Terminated Lead. - [PIT5074G](/bulletins/10247060.md), 2023-12-11, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Terminal Test Probe And Replacement Terminal. - [1408117001a](/bulletins/10246506.md), 2023-12-11, Service bulletin: ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES; UNKNOWN OR OTHER. Unable to Clear BCM DTCs After Completing Repair - [140842001](/bulletins/10246503.md), 2023-12-11, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES; UNKNOWN OR OTHER; EXTERIOR LIGHTING:HEADLIGHTS:BULBS. Additional Diagnostic Tips for Headlamp Inoperative or Intermittent Conditions - [20NA132](/bulletins/10205059.md), 2021-12-20, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements. - [PIC6439](/bulletins/10201293.md), 2021-09-13, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES. This Preliminary information communicates a diagnostic tip to dealership technicians when diagnosing a B1517 DTC. - [150603002H](/bulletins/10190339.md), 2021-04-16, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Original Equipment Batteries Part Number and ACDelco Replacement Battery Approved Warranty Part Numbers Correct battery cold cranking amperage \(CCA\) ratings and type are critical for proper test results when using the EL\-50313. Access to the battery specification label, which contains the OEM part number and CCA rating and type, may be difficult without component removal. Refer to the table below for the original equipment ratings and part numbers used to set up a proper battery test. There has been some confusion as to the correct ACDelco battery warranty replacement. Refer to the table below for the correct battery warranty replacement. The correct ACDelco battery warranty replacement in the catalog is designated by the "Original Equipment Replacement" note in the description field. - [19NA242](/bulletins/10176615.md), 2020-06-22, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT. This informational bulletin announces the availability of a High Voltage battery pack refurbish kit when the battery pack assembly needs to be replaced and information on how dealers can obtain the refurbish kit. - [PI0798A](/bulletins/10168213.md), 2019-11-25, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This preliminary information bulletin provides a procedure to correct a condition of a Check Engine Light with DTC P0C4A that Sets immediately after a repair to the High Voltage battery cooling system that involves draining/refilling of coolant. JSON: [/v1/bulletins/10089427](/v1/bulletins/10089427) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2015521&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10089427&vehicle=Service%20bulletin%2015521)