Just a quick note in the dealings of DTC's:

In the last week my 2000 blazer has been popping quite a few dtcs (P0101,P0300 (the dreaded FI), P0404, P1410 i think) So i've been flipping out trying to chase the problem!! Tranny started missing the gears at 2100-2400rpm all the codes started popping up went out bought IAT sensor, TPS, cleaned CAI, and MAF (even bought a new on waiting for it). Hoping it wasn't the spider (it wasn't).

As luck would have it my truck wouldn't start after i reconected everything; The battery terminals were clean and tight, and still not making good contact ( mechanic buried the tabs into posts and back the screws out) leavin' 4 little holes in the contact and at that rpm would " rattle" causing an arcing situation.

So when you start having randoms codes, check your connections thouroughly may save you some head-aches.

Hope my headache helps someone else!