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Old 04-23-2012, 08:57 AM   #5
motornut
78K & 79C Jimmys
 
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Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
Re: Leaking coolant with the truck off?

had water pumps do that,leak @ block
check these for leaks ,top and bottom,loosen the belt check for movement
check the heater core,under side of heater box, pass side floor
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1978 GMCJimmy4X4-350/203
1979 GMCJimmy4X2-305/350
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