Hi! I own a 2005 Chevy Trailblazer LT with the 4.2 L I6 engine. Ever since I bought the car it has a whining noise (kinda like a hum. It's hard to explain but it doesn't sound like a belt screech) that I can't quite pin down to a specific area. I hear the same type of whining from other...

Hey guys I have an 06 ls 4.2l v6 that just passed 100k. I have my smog check coming up so I decided to give it a simple tune up. Car has been running fine so today I cleaned the TB entirely, swapped out all new spark plugs (disconnected battery throughout all this), cleaned and oiled K&N filter...

Hey all, I know this might sound like a dumb question but where is the air filter located? Does anyone have any pics?

Hi !!! I have OEM air filter and I want to know for what reason I would change it for K&N. Not CAI, just the filter. ...And what should I expect from putting CAI. Did not find any answer with search. :thx

Hey guys, Just want to first say wow. This site is awesome. I just got my Tblazer a month ago (05 LS with 38k on the clock). Planning on keeping it mostly stock for resale reasons. I am on my 3rd full tank of gas right now and am a little perplexed. My first full tank was on cheapo...