13455281 Replacement for GM 12V 4-Pin Multi-Purpose Starter Accessory Relay, 2-Pack, Compare RY1928, HI PWR Black Blade Fuse Box Relay Fits Buick Envision Chevrolet Equinox GMC Terrain Cadillac XT4

["[PART NUMBER & 3-POINT CHECK] Replacement for GM part number 13455281; compare with Standard Ignition RY1928 reference. Package includes 2 black 12V 4-blade relays with 85/86/30/87 terminal diagram and HI PWR marking. Confirm fitment by: (1) matching 13455281 on the original relay or parts catalog, (2) matching 4-pin blade layout and relay diagram, and (3) confirming the fuse/relay box slot in the vehicle manual or fuse box legend.","[FUNCTION & LOCATION CHECK] Cataloged as a multi-purpose / starter accessory relay. Depending on vehicle and fuse-box slot, this relay may be used for accessory power or starter-related relay circuits. Common location is the fuse and relay box; order by description and verify the exact cavity before installation.","[COMPATIBLE WITH BUICK / CADILLAC] Compatible with select applications using part number 13455281, including Buick Envision 2016-2023, Buick LaCrosse 2017-2019, Buick Regal 2018-2020, Cadillac XT4 2019-2023, Cadillac CT4 2020-2025, Cadillac CT5 2020-2025, Cadillac Escalade 2021-2025 and Cadillac Escalade ESV 2021-2025. Verify by original part number.","[COMPATIBLE WITH CHEVROLET] Compatible with select Chevrolet applications using part number 13455281, including Equinox 2018-2020 and 2022-2024, Cruze 2018-2019, Malibu 2017-2025, Silverado 1500 2019-2025, Silverado 1500 LTD 2022, Silverado 2500 HD / 3500 HD 2020-2025, Silverado 4500 HD / 5500 HD / 6500 HD 2019-2024, Tahoe 2021-2024 and Suburban 2021-2024.","[COMPATIBLE WITH GMC] Compatible with select GMC applications using part number 13455281, including Terrain 2018-2020 and 2022-2024, Sierra 1500 2019-2025, Sierra 1500 Limited 2022, Sierra 2500 HD / 3500 HD 2020-2025, Yukon 2021-2024 and Yukon XL 2021-2024. Verify engine, trim and relay location before purchase.","[INSTALLATION TIPS] Disconnect power before service. Pull the old relay straight out, press the replacement relay in evenly, and avoid hard prying against the fuse box. Inspect the socket for heat damage, corrosion, moisture or loose terminals; do not install if the socket is damaged or if the original relay uses a 5-pin / 87a layout.","[WHEN TO REPLACE] May help restore circuit operation when diagnosis confirms relay failure. Helpful checks include a damaged or missing relay, overheated housing, corroded terminals, loose socket contact, or an accessory / starter-related circuit that tests good except for relay operation.","[IMPORTANT NOTE] This listing uses vehicle names and part numbers only for compatibility verification. It is a replacement relay set, not a claim of vehicle-brand endorsement; confirm the original part number, terminal layout and circuit position before ordering to reduce misfit returns."]