Can some one help and tell me what ths is 97 Tahoe 5.7 l31

[Rebel511]

It has an on off switch my tb was smashing it so I took it off and the tubing broke easy is this necessary do I need to fix right away?

 

[618 Syndicate]

Ummmmm....

 

[Dariusz Salomon]

What?

 

[SUBURBAN5]

Please pictures or details???

 

[SUBURBAN5]

Also tb meaning throttle body??

 

[Nad_Yvalhosert]

Pictures. Or it didnt happen.

 

[Rebel511]

Sorry guys thought I put them up but guess not but here they are with this little tube broken

 

[SUBURBAN5]

That tiny hose is a vacuum line. I'd say yes you need it, I believe for the heater. You could splice it or get one from a junk yard

 

[mattillac]

Probably #23 in the diagram below, 15971641 is the part number, seems like it is discontinued.

You must be registered for see images attach

1996 Chevrolet Tahoe Base 4DR HOSES & PIPES/HEATER PART 1-FRONT

Diagram of OEM HOSES & PIPES/HEATER PART 1-FRONT. Contains 8 parts priced between $9.57 and $52.94. Fits 1996 Chevrolet Tahoe Base 4DR.

www.wholesalegmpartsonline.com

Here is a similar thread.

Part number help!

Was in the process of replacing my fuel pressure regulator and I snapped the small plastic line that runs from firewall on the passenger side to what I believe is another sensor of some sort over by the TPS. I think is vacuum related Im not entirely sure. I just know its old and as I was trying...

www.gmt400.com

Sounds like others are have used vacuum tube/hose to replace it.

Looks like it is for controlling water flow to the heater core.

Best of luck.

 

[Rebel511]

That's the pcv hose. L31 has the pcv valve in the manifold and a simple hose connection off of the driver's side valve cover aft. Pre-vortecs the valve was on the cover and the hose connection at the manifold. PCV inlet air is on the passenger side air cover forward and connects to the inlet air neck. So yes, definitely need it. If you need replacement parts the pcv system is listed under emissions control.

Ok thanks but why is there an on off switch I can turn?