[TECHNICAL PARAMETERS] This 12V 40A 4-pin SPST power relay is a functional replacement for part numbers 15328864, 12193604, and 13503102. It features high-conductivity alloy terminals to ensure stable electrical switching for high-load powertrain circuits. [UNIVERSAL APPLICATION] Specifically designed to be compatible with Chevy Silverado (2003-2018), compatible with GMC Sierra (2015-2019), and fits Buick Enclave (2010-2017) models. It snaps directly into factory fuse panels for terminal 15 and terminal 30 modules. [ELECTRICAL CIRCUIT REPAIR] Restores reliable power supply to solve engine no-start conditions, intermittent AC cooling loss, and clicking noises. Effectively clears diagnostic trouble codes such as P0615 and B1325 caused by relay contact fatigue or internal carbon buildup. [DURABLE CONSTRUCTION] Built with an upgraded heat-resistant PA66 nylon housing and silver-alloy contacts to prevent circuit welding under high-amperage surges. Maintains reliable performance in extreme engine bay environments ranging from -40 to 125 degrees C. [RELIABLE MAINTENANCE] This professional-grade single unit allows for an immediate plug-and-play repair for worn-out factory relays. The standard Mini ISO 280 format ensures a secure, vibration-resistant fit in fuel pump, AC compressor, or starter motor sockets.

Restore Efficient Electrical Control with the 15328864 Relay

Are you facing a sudden engine stall or an AC system that won't blow cold air? In many modern trucks and SUVs, a failed electrical switch is the hidden culprit behind intermittent power loss and stubborn fault codes. The 15328864 4-pin SPST relay acts as a critical gatekeeper for your vehicle's high-current circuits. Replacing an aging or clicking factory relay with this high-specification alternative ensures your powertrain and climate control modules receive the stable, clean voltage they need to run reliably.

Built to handle the intense heat soak of engine bay fuse boxes, this 40-Amp relay features upgraded internal contact architecture that resists pitting and carbon buildup. Whether you are clearing a "Check Engine" light or restoring cold airflow to your cabin, this precision-engineered component provides the mechanical switching integrity required for professional automotive 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:Confirm your original relay part number matches 15328864, 12193604, or 13503102. Please verify the 4-pin SPST (Normally Open) layout and "Mini ISO 280" format before purchase. Ensure the relay seats with a firm "click" to guarantee a vibration-resistant connection in your relay panel.