Hey folks I purchased a 1998 GMC w45(same as Isuzu npr) great truck never had any issues until now. I've owned the truck since 08-09(?) only thing I've ever had to do is new tires exhaust pipe and regular maintenance. Recently the ole beast has kicked on the battery, brake, and vacuum warning lights. From what I've found out it has something to do with alternator, charge relay, and or bad wires. My question is does any one have any info on them? Any ideas or info would be appreciated, thanks
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