how do i change spark plugs on my 1999 chevy blazer 4.3

 

Easiest way is to jack up the front and support it on jack stands to allow the wheels to droop. You should be able to remove them through the wheel well. The center plug on the driver's side will be by far the worst one to remove. I was able to do it with a standard deep socket and my wobble ended extension. Just got it a bit loose, then used a spark plug socket with a wrench to remove it the rest of the way.

 

There is a rubber boot over the steering shaft that you can pull back and you will notice a flat spot in the shaft right in front of the middleplug that when you turn the wheels a little in either direction gives you just enough extra room to remove a bit easier.

Also, I bought a $2 spark plug wire remover at Auto Zone that gives you a little more confidence that you wont pull the wire out of the plug cap.