Open the glove box and let the squirrel out!!
The thumping noise coming from under the glove box of your 1995 Chevy when starting or shutting off the vehicle could be caused by a few issues. It may be related to the heater or air conditioning system, such as the blend door actuator or a failing blower motor. Another possibility is a loose or worn component in the dashboard or cabin area. It’s advisable to have a mechanic inspect the vehicle to identify the exact source of the noise.
A thumping noise under a van can be caused by several issues, including a loose or damaged exhaust system, worn-out suspension components, or a failing drive shaft. It could also be a sign of debris caught in the undercarriage or an issue with the tires, such as uneven wear or a broken belt. If the noise persists, it's advisable to have a mechanic inspect the vehicle to identify and resolve the underlying problem.
Under the vehicle, behind the driver.
under the pickup in the center of the engine block
under the dash on the passenger side.
Under dash, left side.
under drivers side seat. under the truck.
It is under the dash where the passagers feet go.
Usually passenger side, under the dashboard.
Could be motor mounts or transmission. You could check them by usesing pray bar on all the mounts to see if there broken.
under the dash passenger middle ish
Probly under the drivers door on the inside of the frame.