my 1999 gmc serria makes a psst sound every eight seconds when the heat is on and it gets louder the faster you go. anyone any ideas
2006-12-02 11:32:54 · 5 answers · asked by mangy 2 in Cars & Transportation ➔ Maintenance & Repairs
Since the controls for heating, switching between floor and defrost modes, are vacuum controlled, you probably have a vacuum line either disconnected or split. Reconnect or replace it.
2006-12-02 11:40:35 · answer #1 · answered by oklatom 7 · 1⤊ 0⤋
Sounds like a vacuum leak in the dash.
2006-12-02 11:37:12 · answer #2 · answered by cjr92265 1 · 0⤊ 0⤋
nicely, for one i'd imagine that you opt for intense gears in case you opt for to be going 100 and fifty miles in line with hour. i does no longer bypass that quick till you locate out what that is. A low equipment ratio is reliable for placing out quick, yet no longer for retaining a intense speed like that.
2016-11-23 13:22:31 · answer #3 · answered by ? 4 · 0⤊ 0⤋
have your blower motor and heater core checked out. the fan in your blower motor may be going out.
2006-12-02 11:40:38 · answer #4 · answered by cameraspaz2 2 · 0⤊ 0⤋
Your wife isn't trying to get your attention is she.
2006-12-02 11:41:18 · answer #5 · answered by bungee 6 · 0⤊ 0⤋