1998 GMC Sonoma "heater work check" Questions

...heater dosent work looks like you have an airlock in the radiator.... start the truck when cold, and remove radiator cap. let the truck run without the cap and you're supposed to see air bubbles ...

...work for the heater 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 ...

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 proper operation

heater blower motor not working check voltage at plug at heater motor if power their replace motor if no power check fuse or relay

...change the thermostat Odds are your heater core isn't working or plugged. Check your passenger floorboard for water, and replace the heater core. If that doesn't fix it, get a coolant system

...heater motor only works on high speed when I "hot wire" it. replaced the blower motor but still the same results. small 4 cyl. automatic, 2 wheel drive the blower motor module is burn.or defect ...

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 ...

...Check antifreeze level, if it's ok then it could be a problem with heater core A thermostat is a good start because it sounds like the heater core does not have sufficient flow of coolant through it, ...

...heater work defroster work. the other half does not work if its only coming out certain vents and will not change the vents when the dial is switched, it is probably in the vaccum lines under your ...

...150 degrees?? any comments will be greatly appriciated thanks!! Possibly plugged or inerporable heater core. Possibly heater core valve (this diverts hot air through your heater system) When you ...