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Re: vmac ll mack truck rd688
Posted to HD/Fleet Forum on 10/5/2011

the fic..... its from a chiltons manual.... need i say more.... ya the voltage on batt. good sometimes it reads 18 or more once it read 12volts and started... then it went to 16 and up and died...still 12 volts on batt and dash gauge. the same code all the tim... Login to read more.