Check battery earth connection.
yes
Is a 1999 chevy tahoe transmission compatible with a 2001 chevy tahoe transmission?
Someone may have switched the sockets in the back of the lenses.
Chevy tahoe has a oriface tube
Start with checking the fuses and bulbs. See sources and related links below for bulb information.
There are currently no recalls for the 99 Chevy Tahoe.
How to change fuel filter in 1999 Chevrolet Tahoe
Start with changing the fuel filter.
The 1999 Chevrolet Tahoe didn't come with a cabin (HVAC) filter.
its a standard 6 lug i have them on my Tahoe
idle speed for a 99 Tahoe
4L80e transmission