2002 bonneville heat isn't blowing hot

Asked by John Nov 14, 2018 at 09:41 AM about the 2002 Pontiac Bonneville SSEi

Question type: Maintenance & Repair

I have a 2002 Pontiac Bonneville SSEI in when the heat is
on it is it not hot it's just cool or luke warm. I replaced the
water pump already the thermostat looks like it's working
properly but I'm not sure what else to do can someone
please help.

1 Answer

40,075

there's probably a blend vent that's not opening , or the selector isn't working , do you hear the vent open when you make the selection ? clean the contacts on the selector switch , if you can reach the heater hoses in the engine bay see if both are hot , if only one is you may have a plugged heater core

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