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Grand Future Air Dried Beef Dog Food
Air Dried Dog Food | Real Beef

Grain-Free, Zero Fillers

90 GMC Jimmy Knocks


donn1964
09-14-2006, 08:25 AM
I have a 1990 S-15 with a 4.3 that rattles when the heater is turned on.....sounds like every rod in it is going!!!! Turn off heater it quiets right down.........Anyone have any ideas???I`m stumped.
antxxny
10-02-2006, 08:02 PM
I have a 1990 S-15 with a 4.3 that rattles when the heater is turned on.....sounds like every rod in it is going!!!! Turn off heater it quiets right down.........Anyone have any ideas???I`m stumped.
Sounds like your blower fan.

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