yes that's what it's for, and yes, it is needed, if ya don't want problems down the road. GM wouldn't have wasted the money to put it there if it wasn't a good thing!

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics