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Hey all, had a quick question. My car was running a little rough on idle sometimes, very intermittent so one of the mechanics put a scan tool on it and while there were no codes, he noticed that the scan tool was reading battery voltage as 12.5v. I got the battery checked by Supercheap Auto &...

Hey everyone, need your help. I have a 2016 WN Caprice with LS3 and I just noticed a whistling noise and a ticking noise on idle. The car has 260k kms (mostly highway kms) and has been serviced at regular intervals. Any idea as to what it could be? Lifters maybe? Not sure what's causing the...