I'm getting a code for my knock sensor but I've never played with one before so I don't know where it's at. All I've figured out is that I have to drain the cooling system before I change it which I'm assuming it means its towards the bottom of the block.

I've got a 92 Firebird 350 TPI

 

no need to drain coolant I don't think...i can't rememeber if i changed mine before i dumped coolant in or not...look on the passenger side of the block, right in front of the starter...it looks kinda like a fan temp sending unit...i

 

thanks for the help

 

You'll probably want to drain the coolant. The knock sensor is basically acting as a block drain plug for your block's passenger side. You'll see a plug in exactly the same place on your driver's side. They both drain coolant from the block.

When I did it on my car, I didn't drain the coolant and ended up with quite a mess to clean up in the garage.

 

haha...i must've put the new one in before i put all my coolant in...mine was nice and dry