What did you do to your NBS GMT800 Tahoe/Yukon Today?

[Countryboy07]

Replaced the impact sensors. No more air bag light!

 

[Rocket Man]

OK, now I have a question for anyone that's done this: I used 3/8 fuel line , which fits great, while running I hear it sucking vacuum now and it collapses , maybe 1/2 the diameter of the line. Is this normal? I noticed the stock line to the pcv is a hard line. Just took it for a ride around the block and it runs normal, floored it and it went great .I was thinking of maybe modding the stock hard line to work with the catch can , or should I just leave it as is? Any input is greatly appreciated.

I used that line too and I don't hear a sucking sound and my hose doesn't collapse at all. I don't think that's right. The rubber hose should work fine though. I'm not sure what's going on there, maybe a restriction.

 

[Fosscore]

Replaced the impact sensors. No more air bag light!

This is definitely a good feeling. Same thing when I changed out my passenger sensor last week. Nice.

 

[Tonyrodz]

Never had an issue before. Never heard anything before it was swapped today. Think there might be an obstruction in the new hose ? While running with the catch can I pulled each hose out one at a time then both at the same time and each was pulling vacuum with no problem. I plugged each one with my finger , one at a time and it wanted to stall .No driveability issue going around the block. Would it throw a code if something wasn't right ?

 

[Rocket Man]

Never had an issue before. Never heard anything before it was swapped today. Think there might be an obstruction in the new hose ? While running with the catch can I pulled each hose out one at a time then both at the same time and each was pulling vacuum with no problem. I plugged each one with my finger , one at a time and it wanted to stall .No driveability issue going around the block. Would it throw a code if something wasn't right ?

Not sure about a code. Did you check the catch can to see if it's restricted? You might try removing it from the picture and see if the hose still collapses. ( Attach hose to hose).

 

[Tonyrodz]

Didn't check if there was a restriction in the can itself. I was going to put the hose ends together to see if it still collapsed but didn't. Have to do it tomorrow. I guess if it doesn't collapse and I don't hear sucking it has to be the can?

 

[Rocket Man]

Didn't check if there was a restriction in the can itself. I was going to put the hose ends together to see if it still collapsed but didn't. Have to do it tomorrow. I guess if it doesn't collapse and I don't hear sucking it has to be the can?

Yep.

 

[Tonyrodz]

Hmmm, OK , will do .I'll let you know what I find. Thx for the input. Appreciate it .

 

[Tonyrodz]

I pulled both hoses from the can this morning and put them together, rubber hoses are still being sucked 3/4 of the way closed .Maybe that's why GN chose to use a hard line there? There's no restrictions in the hose, and I'm using a new pcv.

 

[Rocket Man]

I pulled both hoses from the can this morning and put them together, rubber hoses are still being sucked 3/4 of the way closed .Maybe that's why GN chose to use a hard line there? There's no restrictions in the hose, and I'm using a new pcv.

I don't think there should be that much suction there but I'm no expert. And did you say you have suction from both directions? That can't be right either. You might read the thread on catch cans and post a question there. I still say something's not right. http://www.tahoeyukonforum.com/threads/get-a-catch-can-before-any-mods.49716/page-45#post-1015612