Wrong battery issues?

[mfb496]

Has anyone tried using a battery that was'nt specd for your truck and had issues with things like the a/c,idle etc.?

[maxwedge]

Even a weak battery should not be a problem if the charging system is working properly.

[Jethro]

Question:
Did you buy this trailblazer as a sbmerged vehicle?
Have you owned this vehicle since brand new?
Do you see any corrosion on any visible signs on electrical contacts?

[mfb496]

Turns out it was the throttle body like someone suggested. I was thinking idle air control but it doesnt have one since its throttle by wire. Once i cleaned the throttle body no prblem.