Wierd noise

I get a weird noise when I start my truck after it has sat for a while. It seems to be coming from behind me but I have a slight hearing disability and its hard for me to pinpoint the direction a noise is coming from. Its kind a high pitch buzz like a pump pressuring up or something. Only lasts for a split second and actually sounds pretty cool like a shot on an air ratchet. I was wondering if there is a lift pump near the fuel tank that looses pressure when it sits. It could almost be a hydraulic noise from the tranny too. Anyone else have this??

 

Pretty sure it is the ABS pressuring up.

HTH

 

^ +1 That's what it is.

 

So this is normal and wont get worse? Thanks for your help.

 

Normal yes. Actually I don't even notice mine much anymore, just normal noise I guess.

 

ok thanks