Heater problem
1999 Chevy Silverado V8
My heater makes a knocking noise when the heater is switched from inside air circulation to outside air and heater to air conditioner. On one the noise is a knocking noise in the right side near the dash and in the other is a grinding noise. It stops and starts after a minute or so and last a few seconds.
1999 Chevy Silverado V8
My heater makes a knocking noise when the heater is switched from inside air circulation to outside air and heater to air conditioner. On one the noise is a knocking noise in the right side near the dash and in the other is a grinding noise. It stops and starts after a minute or so and last a few seconds.
Jan 5, 2010 at 6:54 PM
