[The_Yeti]

Do both at the same time.

Pick up a bottle of CRC MAF cleaner and a bottle of CRC Throttle body/intake cleaner.
grab a toothbrush.

I'd start off with disconnecting the negative battery terminal.
then loosen the three hose clamps with a flathead screwdriver. 2 at the MAF sensor and one where the intake tubing connects to the throttle body.
Unplug the harness going to the MAF sensor. wiggle that sucker loose. Be careful though. Once out don't even think about touching the inside of the MAF with anything. Just spray the heck out of it. set aside and let dry while you do the throttle body.
The throttle body I would spray and scrub(toothbrush) around butterfly, also lift the butterfly and scrub inside.
Put everything back together and start engine. It will start a little rough at first or have trouble starting but it will start.

There's a couple of great videos on youtube incase your second guessing it. They're not for the H2, but chevy's so close enough.

Not sure if I missed anything, If I did someone might chime in.