1998 GMC Sonoma "heater working" Questions

The heater still won't work after I changed the thermostat on my 99 gmc sonoma Get a female garden hose adapter from the local hardware store. Disconnect the heater hose from behind the fan pulley and

...heater core started working now its working hardlt at all more cold than heat All kinds of things to look at. Start with coolant level in radiator. Very often if the radiator is low, the heater will ...

changed thermostat heater work couple days then stated blowing cold air again try topping the rad up ,if that doesnt work then pull one of the heater hoses off and bleed the heater

...heater not working,for this check the heater blower motor ,If the motor is faulty then heater will not start.Other cause of heater not getting started is faulty thermostat and faulty coolant ...

Heater does not work The heater does not blow hot air. Occasionally it might blow lukewarm but never hot. The air direction switch works fine as does the fan. Just no heat. Check blend door motor for ...

Heater doesnt work blows cold air, replaced thermostat and flushed heater hoses appears to have no flow through heater core, but lines arent plugged on a 1995 gmc sonoma. Why is the hot air not ...

...blower for heater and air condition isnt working sounds like a bad relay probably the blower resistor. turn car off and unplug resistor and then plug back in . If it works you have some other

...blower for heater and air condition isnt working is it working on any speeds. have you check the relays under the hood,and the fuse. this is the link to my ...

heater dont work. water pump is not leaking.heater core is not leaking.the truck heats up so the thermastat isnt stuck. The heater core is either clogged or the water inlet valve in stuck.

heater dosnt always work. Possibly heater control valve. Its located in the heater hose under the hood.