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

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Stefan Elfstrom

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Bought UV led light and found out that AC compressor high pressure switch is leaking internally. (Mounted back at the compressor housing)

Ordered new switch, drier and ocriface.
 

Rocket Man

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Bought UV led light and found out that AC compressor high pressure switch is leaking internally. (Mounted back at the compressor housing)

Ordered new switch, drier and ocriface.
Did you need to add dye to the refrigerant to use the light?
 

#1taho

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Got the tranny out and decided to do the 6.0 also. Was going to wait a few more weeks for that but don't want to take the same stuff off twice.

Does anyone know if I for sure have to do the vats relearn ? I have read most people don't have that problem but just want to make sure.

So progress report is tranny out and top end of motor is disassembled. Tomorrow water pump and she should be comming out. Any luck the 6.0 in and mostly put back together.
 

01ssreda4

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Got the tranny out and decided to do the 6.0 also. Was going to wait a few more weeks for that but don't want to take the same stuff off twice.

Does anyone know if I for sure have to do the vats relearn ? I have read most people don't have that problem but just want to make sure.

So progress report is tranny out and top end of motor is disassembled. Tomorrow water pump and she should be comming out. Any luck the 6.0 in and mostly put back together.

Vats has nothing to do with an engine swap if thats what youre asking.
 

Stefan Elfstrom

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Ac stopped working?
Yes and low pressure in system. When I add refrigant it does not get cold eighter.
I do not have any gauges to attach on high pressure port but I assume that the leak at the high pressure switch is the culprit?
 

#1taho

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image.jpeg 6litre is in and bottom buttoned up. AC is on and power steering bracket in on. During the week I will pick away at the rest. Still have to put the tranny in.

So far every sensor is the same. I used the 5.3 oil pressure sensor cause it was shorter. The other sensors on the block I kept. The 5.3 intake and exhaust will be going back on with all sensors attached. Nothing out of the norm so far.
 

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