I know that it is the front driver's side but can you all tell me if I should replace them in pairs? That being both of the fronts or can I just replace the bad one?

 

If it ain't broke, don't fix it.

 

Thank you sir. I was just wondering due to their potential to get "lazy".

 

When one of mine went out I got a cheap Bosch replacement and it was still like 47 bucks. And now I don't even use the front ones.

Really no reason to spend the money on one if it's working. Odds of it going out any time soon are really slim

 

Thanks for your replies. I forgot to ask, will the engine light go on it's own or will I need to clear the code to get it to go off after the fix?

 

Forgot to add that it is on an '03 5.3 Avalanche. Bone stock.

 

You can let it clear it's self if you want. NO biggie really.

 

Did a new sensor solve the problem?