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

[Doubeleive]

What's that? I know what a clam is

the up/down actuator is the one at the Y in the air housing when you remove the cover there are 2 actuators, the one closest to the blower motor is hot/cold, then up forward at the Y you will see the pipe go up towards the roof and down towards the floor that is where the second one is located.

 

[Tonyrodz]

the up/down actuator is the one at the Y in the air housing when you remove the cover there are 2 actuators, the one closest to the blower motor is hot/cold, then up forward at the Y you will see the pipe go up towards the roof and down towards the floor that is where the second one is located.

Thx Wes. It's been hell hot here--low to mid 90's, so it's too damn hot for me to even mess with anything. Supposed to cool down later in the week, so hopefully I'll be able to look then.

 

[Scottydoggs]

Does anyone know where the actuator is for the roof vents? I tried resetting the hvac using the tech2, still blowing out warm/hot air.

i changed that actuator, its under the plastic pass side rear. i did that module first and it did nothing. actuator was the fix. and i got to say, working rear ac helps cool the truck down a lot faster.

 

[Rocket Man]

i changed that actuator, its under the plastic pass side rear. i did that module first and it did nothing. actuator was the fix. and i got to say, working rear ac helps cool the truck down a lot faster.

I need to revisit mine. I think I replaced the blend door actuator back there a couple years ago but now the mode one is acting up. Whichever the one is that controls if it’s on heat or ac..that’s what’s acting up now so I just leave it turned off.

 

[Doubeleive]

Does anyone know where the actuator is for the roof vents? I tried resetting the hvac using the tech2, still blowing out warm/hot air.

if it is blowing out warm air then you want to check the actuator closest to the blower motor, all the other actuator does is send it up or down or in the middle, doesn't control temp.

 

[blueinkd]

I picked this thing up for work a few weeks ago. Been keeping me busy and my mod money tied up! Love the 2.0Turbo in it. Probably going to park it and drive the tahoe anyways. I dont like the miles climbing up closer to 27K. Tahoe cluster is broken so what I can't see can't hurt me or don't exist!! I just pretend she doesn't have well over 240k miles. She still my baby!! I need to post up pictures of my shorties. Looks good in the bays.

Anyone know of the top of the dome which OEM plug wires facilitate more room around exhaust manifolds??? Probably going to add some new AC Delco iridium plugs and new wires just cause on the tahoe.

 

[Rocket Man]

if it is blowing out warm air then you want to check the actuator closest to the blower motor, all the other actuator does is send it up or down or in the middle, doesn't control temp.

That’s the one I need.

 

[Tonyrodz]

That’s the one I need.

I think this is the 2nd or 3rd year mine has been blowing hot air, I've just left it off. I finally decided to mess with it. If it won't work I'll just keep it off lol.

 

[Rocket Man]

I think this is the 2nd or 3rd year mine has been blowing hot air, I've just left it off. I finally decided to mess with it. If it won't work I'll just keep it off lol.

You can always remove the actuator and turn it by hand and then when winter starts flip it back.

 

[Tonyrodz]

You can always remove the actuator and turn it by hand and then when winter starts flip it back.

I was thinking that, but just leave it in that position permanently.