mackey58 Posted February 12, 2010 Share Posted February 12, 2010 on our 05 granite.it has ai400 since day one it would pump coolant out of the plastic tank.dealer changed the water pump.we put in new stats and put on the steel coolant tank and it still pumps coolant out the tank.any theories?plus sometimes it displays this code s001-08 m128.our dealer didnt know what that code was.our dealer and us kinda have had problems since they put a clutch in one of our other trucks Quote Link to comment https://www.bigmacktrucks.com/topic/12641-coolant-isues/ Share on other sites More sharing options...
Mackpro Posted February 12, 2010 Share Posted February 12, 2010 on our 05 granite.it has ai400 since day one it would pump coolant out of the plastic tank.dealer changed the water pump.we put in new stats and put on the steel coolant tank and it still pumps coolant out the tank.any theories?plus sometimes it displays this code s001-08 m128.our dealer didnt know what that code was.our dealer and us kinda have had problems since they put a clutch in one of our other trucksThat code is for #1 EUP= MID128 SID1 FMI8 usual code for cold start up. You need to remove the Rubber "Y" hose between the oil cooler and steel lower radiator hose and clean the oil cooler inlet screen, could be stopped up? Quote Link to comment https://www.bigmacktrucks.com/topic/12641-coolant-isues/#findComment-49576 Share on other sites More sharing options...
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