possible altanator
Your keyless remote might not work for your 2002 Chevy Tahoe because the battery in the remote is dead. You can replace this battery by prying the remote cover off of the back of the remote or by removing the screws holding the cover closed.
It is the key fob battery.
under the hood to the left of the battery
It is in a black plastic box just below the battery. Between the engine and battery.
There are several things that can keep a Chevy Tahoe from starting including the starter being bad, a dead battery, an alternator, or a fuel pump.
Loose connection? Bad ground? Weak battery?
possiblly the starter or fuel pump is out.
alternator. go to a parts store and have them test the charging system. must will do that for free
Is a 1999 chevy tahoe transmission compatible with a 2001 chevy tahoe transmission?
In Aurora il they charge $180 for each one the 2002 tahoe has two converters.
Could be a shorted wire, or bad battery.
Supposedly it is referring to the key fob battery (KeyFob #1 or #2).