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

[Sam Harris]

Sam, wondering about followup on this. Have you had any more CELs due to this? I'm about to do some tests on mine since I'm getting the P0455 code from time to time and my evap monitor doesn't seem to complete.

Hey Steve. Yes this seems to have addressed the P0455, thankfully. Just did the gas cap first (it needed a new tether anyway), still got the P0455. But after replacing the vapor purge valve solenoid, it’s been CEL free for several weeks! [emoji106][emoji16]

 

[Bombsquad85]

Washed, clayed and waxed the Denali today. I also put the new grill on and went with the black badge. I'm happy. (Red badge was a pita to take the dip off it, plus the chrome was pitting)

 

[SinfulSpeed]

Fog Light Mod

 

[Fless]

Hey Steve. Yes this seems to have addressed the P0455, thankfully. Just did the gas cap first (it needed a new tether anyway), still got the P0455. But after replacing the vapor purge valve solenoid, it’s been CEL free for several weeks! [emoji106][emoji16]

Nice, Sam! I'm going to run a few tests on mine with the Tech 2; I'm thinking that I somewhat understand the system. I was able to pull vacuum on the whole system a month ago, just messin' around, so I know the purge valve opens and the vent valve closes. Just not sure if one is intermittent, and I know the purge valves can be. Just need to be sure that the tank pressure sensor is working. My purge valve is probably OE. Flex calls for an AC Delco 214646 purge valve -- if you remember, is that what you used for yours (since I know your Yukon is Flex)?

 

[Sam Harris]

Washed, clayed and waxed the Denali today. I also put the new grill on and went with the black badge. I'm happy. (Red badge was a pita to take the dip off it, plus the chrome was pitting)

View attachment 280013 View attachment 280014

Looks great man!

 

[Rocket Man]

Washed, clayed and waxed the Denali today. I also put the new grill on and went with the black badge. I'm happy. (Red badge was a pita to take the dip off it, plus the chrome was pitting)

View attachment 280013 View attachment 280014

That looks sweet with the chrome around the black badge, I didn’t realize yours had that. Great choice!

 

[Rocket Man]

you get anybody interested in this headlight switch? If not, shoot me a PM. I’ll buy it from you. Shipping to 23112.

PM sent

 

[Bombsquad85]

Looks great man!

Thanks!

That looks sweet with the chrome around the black badge, I didn’t realize yours had that. Great choice!

Thanks, yea the chrome really breaks it up.

 

[Sam Harris]

Nice, Sam! I'm going to run a few tests on mine with the Tech 2; I'm thinking that I somewhat understand the system. I was able to pull vacuum on the whole system a month ago, just messin' around, so I know the purge valve opens and the vent valve closes. Just not sure if one is intermittent, and I know the purge valves can be. Just need to be sure that the tank pressure sensor is working. My purge valve is probably OE. Flex calls for an AC Delco 214646 purge valve -- if you remember, is that what you used for yours (since I know your Yukon is Flex)?

I didn’t find my order, but in my notes, I have:

1997279 : GM OEM: vapor purge valve solenoid (@ intake)

Here’s the box:

 

[cooki3mnster]

Not today but I bought mine yesterday! 2005 Yukon XL SLT 4x4. PO painted it last year. I can’t stand the smoked headlights, so I ordered new housings front and rear this morning.