What exactly do you do to bleed the coolant system on a 1990 Chevy Silverado C1500 350 TBI????
Bleeding the coolant system
Nov 02, 2003
1 Replies
Lots of options;
A flush "T" in the heater hose to the intake manifold works well. (cap loose or off while you fill the system)
Drilling a 3/32" hole in the flange of the thermostat works well.
Propping the thermostat open with an aspirin will work also. (use Advil if you're allergic to aspirin) ;-)
Temporarily removing the coolant temperature sensor works well.
The idea is to allow air to easily escape past the closed thermostat.
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