1999 Chevy Tahoe

[dlackie819]

Does the fan turn on? Did you replace it? Checked for power at the fan? What exactly isn't working properly.

Replaced all the actuators the main switch is in the dash the resistor at the top of the heating box and what's that next to it is a relay that I replaced too and still have no power to the blowers but I can run a hotline to the blower and make it work kind of hotline 20 of fuse and 20 amp switch but I still have no power coming through the switch in the dash for the blowers so I got a blockage in the system somewhere and I can't find it or I don't know how to find it schematics I look up are all for suburbans and Silverados but not my 99 Tahoe it's hard to find correct information if it's not available

 

[GMCChevy]

That helps knowing what you've already done but I wouldn't have any more suggestions for you.
Suburban is the same as Tahoe and Silverado that body style was the same also but 99 was the change over year for pickups so it needs to be for the older body style. But any info for those is the same as Tahoe.