Could my PCM be going bad?

[2000YukonSLE]

whats up guys, i have a 2000 yukon 4.8L and im having some issues with it. the only performance mod is a CAI and ive only seem to be haveing trouble since i installed it. when i put it on, i never reset the computer. a week later i read about it doing it and did it and it ran better. after a few days i got some lag. its really intermittent, sometimes i have power, sometimes i dont. no check engine light no codes nothing. ive since reset the computer a few times and it always seems to run better for a little whlie after doing so. ran like shit yesterday, runs like a champ this morning. sometimes when i first start it, its barely moves in first gear, then shifts to second and takes off. dont know if it bad cats, bad pcm, maybe trans? ive banged on the cats but didnt hear anything rattling... anyone else ever have these issueS?? let me know, thanks

 

[JennaBear]

CLean your MAF.

 

[2000YukonSLE]

already did that, actually bought a brand new one and still no difference.

---------- Post added at 12:59 PM ---------- Previous post was at 12:59 PM ----------

and i do plan on doing a tune through black bear, just need to figure this issue out first

 

[JennaBear]

Did you buy an OEM MAF or an aftermarket?

 

[2000YukonSLE]

i ordered from autozone, said it was an OEM part

 

[JennaBear]

That might be your problem....

 

[2000YukonSLE]

i still have the old one, ill try cleaning it and putting it back in.

 

[JennaBear]

The MAF is very delicate, so I would be very careful when cleaning.

 

[2000YukonSLE]

how would i go about cleaning it, when its off all i see is the mesh part...is there something else i have to take off??

---------- Post added at 03:21 PM ---------- Previous post was at 03:21 PM ----------

and the 3 little prongs on the inside..im guessing thats it?/

 

[JennaBear]

The mesh is what you need to clean. Go to the Auto store, and pick up some MAF cleaner, follow the instructions on the back. You should not touch the mesh with your hands.