Hissing Sound?
Thread Starter
Burning Brakes
Joined: Jul 2013
Posts: 1,008
Likes: 57
From: Kensington MD
Hissing Sound?
This morning when I started up I heard a hissing sound, coming from what seemed like the gauge cluster--definitely from drivers side, not passenger. It sounded like radio static, but it was still there when I turned off the radio. Not super loud, kind of like a small vacuum leak. The sound level didn't change when goosing the throttle in neutral, but did decrease when accelerating in gear.
Ran the codes and other than the B0367 code which pops up occasionally and the TPMS codes (dead sensors) I got a U1160 H, which seems to be a comms fault with the LDCM. Since it was an H code, I don't think that has anything to do with the sound I heard.
Anyway, about 25 minutes into the drive the sound either went away or became so faint I couldn't hear it over the other car noises.
Ideas?
Ran the codes and other than the B0367 code which pops up occasionally and the TPMS codes (dead sensors) I got a U1160 H, which seems to be a comms fault with the LDCM. Since it was an H code, I don't think that has anything to do with the sound I heard.
Anyway, about 25 minutes into the drive the sound either went away or became so faint I couldn't hear it over the other car noises.
Ideas?
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
ALL of your HVAC damper controls are vacuum operated. Operate all modes of the HVAC level controls and see if all of them are able to be properly commanded (DEFROST Air to FEET, Air to middle and the RESERC/FRESH AIR control
VACUUM CONTROLER MODULE:
More vacuum stuff:
VACUUM CONTROLER MODULE:
More vacuum stuff:
