2000 pontiac bonneville

2000 PONTIAC BONNEVILLE
82,146 MILES • 6 CYL • FWD • AUTOMATIC
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HARDWAREDAD
  • MEMBER
  • 1 POST
heater only blows cool air
Jan 6, 2011 at 4:01 AM
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
First, make sure the coolant is full. Next, start the engine and allow it to warm up with the heater on high. Once the engine is warm, feel both heater core hoses. If both are hot, you have a problem with the blend door. If only one gets hot, coolant isn't circulating through the heater core. If that is the case, flush the heater core.
Mar 8, 2011 at 2:28 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.