Heater Coolant Pump Control Circuit Open/Low Voltage

[Auto Raiders]

Hello, just bought a 2019 Silverado LT Z71 and it threw a MIL B269A and B269C for Heater Coolant Pump Control Circuit Open and Heater Coolant Pump Control Circuit Low Voltage respectively. I have scoured the internet and youtube for a location but can't find anything. Can anyone help me and let me know where is this Coolant Pump located? Perhaps a connector is unplugged or a broken wire? It can also be a bad relay but I looked at all 3 fuse boxes (under hood, passenger, and driver sides) and I can't find any fuse/relay that remotely resembles Heater Coolant Pump. Does anyone know of the location for this relay or which relay this is tied into? Your help is much appreciated.

[Niklasbraun]

The heater coolant pump in the 2019 Silverado LT Z71 is usually located near the engine, often close to the radiator or part of the cooling system setup. Its job is to regulate the temperature of the engine coolant.

[silveradosid]

might help you https://gmauthority.com/blog/2022/10/gm-releases-fix-for-chevy-silverado-heater-auxiliary-coolant-pump-issue/