Dorman 902-3312 Engine Coolant Thermostat Housing Assembly Compatible with Select Models workwarehouse there are two possible culprits

there are two possible culprits - the caliper and the electronic parking brake motor

this bellows expander is made of durable steel and features a scissor handle with an anti-slip function

GMC Sierra 1500 (14-19) Yukon (15-20) Yukon XL (15-20)

Read more Make it easier to get in and out of your car

efficiently improve night driving safety

Dorman 902-3312 Engine Coolant Thermostat Housing Assembly Compatible with Select Models workwarehouse there are two possible culpritsDorman 902 3312 Engine Coolant Thermostat Housing Assembly Compatible with Select Models This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm