1. When I shut the truck off I hear a "psssh" sound for a second or so coming from the left intake, I assume that it is the boost dump soleniod opening and reliveng the pressure from the lower intake and intercooler????

2. If I have the air on or the heater on I also get a long "psssh" (15 - 20 seconds) from the passanger side of the motor after I shut the truck off. I am assuming its a/c related but wanted to ask if this is a normal characteristic on lightnings.

3. Moving the truck back a little tonight to get a jack underneath it and I noticed a creak that comes from the rear when i shift from park to reserve and reverse to drive, it only happens with light pedal pressure on the brake and seems to be brake related. I have not noticed this before???

Any input???

Bob

 

1. yes. Aftermarket filter

2. yes. normal

3. YES! noticed it recently and it is annoying as HELL!

 

Bob,

Thanks for the reply.

Sure are alot of Bob's running amuck around here lately

Bob

 

I know I should be flogged for sayin` this without bein` positve..

Maybe the reverse creakin' is the emergency brake. Seems like I was told orheard or dreamed that the rear has a drum for the emergeny brake. On my SHO the emergency is linked to the rear pads\rotor setup. Damn.....I must go look.

 

That is the sound of your truck taking a "sighing" deep breath, because it wishes you would have drove the ***** out of her.LOL

 

Do they release the stored up air when you shut 'em down????? I dunno......could be that as well

 

Ha ha...that one was pretty good.

 

I don't know about airbags, but i hear that can happen to the best of us, when our time comes.