01 Tahoe LT 5.3 4X4 Hard cold weather start, any ideas??

[JTaylor90]

Can't figure this out...need help!

 

[YukonXL04]

Can we get some more info? Describe what exactly it's doing. After the engine warms up does it still hard start while cold outside? When it finally starts does it run bad?
More info is needed.

 

[electro]

Battery, Plugs, fuel pressure??.

How new is battery.

Oil type?...

Do you keep up with regular oil changes?


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[JTaylor90]

Once I manage to get it started it runs like a champ, its just getting it started...I have to crank and wait a little while and keep doin it. Most of the time I drain the battery before it starts...it backfires sometimes while trying to start. New fuel pump and filter, maf sensor, fuel pressure regulator, plugs and wires, intake gaskets, oil pressure switch, coolant temp sensor. No codes, I'm jst at a loss...was told crank sensor might be bad, I'm jst not gonna keep throwing parts at it with no solution....