ID this please!

[gsxrcop]

Still have issues with my 98 Yukon, found this wire unplugged in the drivers side wheel well. Anyone know what it is and where it goes? Thank you.

 

[AtomicHoe094]

any better pictures? cant tell what it is

 

[lummy]

I'm trying to think what else is wrapped in heat shield tape other than the O2 sensor?

 

[gsxrcop]

Here you go. If someone has a 98 Yukon or Tahoe I'm sure we could figure out where it goes.

 

[Phone Man]

It's the connection to the block heater. In place of one of the freeze plugs is a heating element. On the other end of that wire should be a 110v plug. Look around behind the drivers side headlight and grill. It's used to heat up the water in the block for warmer starts in the winter.