15328864 (2-Pack) 12V 40A 4-Pin SPST Automotive Power Relay Compatible with Chevy Silverado GMC Sierra Buick Enclave fits AC Compressor Fuel Pump and Starter Replacement for 12193604 13503102

Professional Electrical Restoration with the 15328864 Relay SetIs your vehicle struggling to start or has the AC stopped cooling intermittently? In many trucks and SUVs, a worn-out electrical relay is the hidden culprit behind stubborn fault codes and sudden power loss. The 15328864 4-pin relay acts as the gatekeeper for your vehicle's high-current systems. Replacing aging factory relays with these high-specification alternatives ensures your powertrain and climate control modules receive the stable, clean voltage they need to operate reliably.This 2-pack set is specifically designed for the harsh thermal environment of your engine bay's fuse box. Featuring upgraded internal contact architecture, it minimizes the internal resistance that leads to heat buildup and eventual circuit failure. Whether you are clearing a "Check Engine" light or ensuring your cooling fan engages properly, these 40-Amp relays provide the precise switching integrity required for modern vehicle maintenance.Applications Include:Climate Control: Compatible with Chevy AC compressor clutch and blower motor circuits.Powertrain Support: Restores power to the fuel pump and starter motor relay sockets.Thermal Management: Manages radiator cooling fans for models compatible with GMC Sierra.System Integrity: Suitable for horn, headlights, and main power distribution modules.How to Choose:Before installation, confirm your original relay part number matches 15328864, 12193604, or 13503102. Verify the 4-pin SPST layout and "Mini ISO 280" format to ensure a perfect fit. A firm "click" during seating confirms a vibration-resistant connection in your relay panel.

• [CORE PARAMETERS] This 12V 40A 4-pin SPST (Normally Open) electrical relay is a functional replacement for part numbers 15328864, 12193604, and 13503102. It features high-conductivity alloy pins designed to maintain electrical circuit switching integrity in modern vehicle power distribution centers.
• [VEHICLE FITMENT GUIDE] Designed to be compatible with Chevy Silverado (2003-2018), compatible with GMC Sierra (2015-2019), and fits Buick Enclave (2010-2017) models. This Mini ISO 280 format relay snaps directly into factory fuse panels without the need for modifications.
• [ELECTRICAL TROUBLESHOOTING] Restores reliable power supply to solve engine no-start conditions, non-responsive AC cooling, and component clicking noises. Effectively clears common diagnostic trouble codes like P0615 and B1325 caused by relay contact fatigue or carbon buildup.
• [DURABLE CONSTRUCTION] Built with high-temperature resistant housing and premium internal contact points to prevent circuit "welding" during high-amperage surges. Maintains stable performance in extreme engine bay environments, resisting thermal wear and mechanical vibration.
• [REPLACEMENT READINESS] This set provides two professional-grade relays, allowing for an immediate repair while keeping an essential spare in your glovebox. The direct plug-and-play design ensures a secure fit for fuel pump, AC, or starter motor circuits to prevent roadside delays.