Why does my Bonneville heater not shut off?
It’s held in by a couple of screws and is a circuit board. Often they fail in the on mode and the blower won’t shut off. Ours failed on a 98 where it would go on and off and operate at funny speeds different than the regular 6 speeds settings that can be picked.
Are there any problems with the Pontiac Bonneville?
One problem is the blower control module which is like the resistor coils for old blowers is an electronic unit on the auto temperature control models. It sits on top of the air box next to the blower motor under the hood. The relay center needs to be loosened (1 or 2 bolts) and raised to access it. Available at Advanced Auto, etc.
Why is my Pontiac Bonneville not cooling properly?
Often they fail in the on mode and the blower won’t shut off. Ours failed on a 98 where it would go on and off and operate at funny speeds different than the regular 6 speeds settings that can be picked. I was told they’re available at Advance Auto as well as dealers, GMpartsdirect.com, rockauto.com.
What to do if your Pontiac Bonneville heater is hot?
Run car until fully hot and speed up motor to 2500 for a few seconds and repeat this 5 times to push water into heater core and get the air bubble out. #2: If radiator full when running motor is hot, are both heater hoses hot even with blower running at full speed.
Why is my heater not working in my Pontiac Bonneville?
Most likely it’s the blower motor control module. It’s the equivalent of the resistors that are in manual heater control cars in the old days. It sits on top of the box near the blower motor. You have to loosen the one or two bolts holding the relay center that’s above the heater box there to get it out of the way.
One problem is the blower control module which is like the resistor coils for old blowers is an electronic unit on the auto temperature control models. It sits on top of the air box next to the blower motor under the hood. The relay center needs to be loosened (1 or 2 bolts) and raised to access it. Available at Advanced Auto, etc.
Can a Pontiac Bonneville have an air conditioner?
The air conditioning works fine but if you turn the temperature up to 80 or 85 so it should be heating it does switch the air from the dash opening to the floor openings but the air is cool not hot.
Why does my Pontiac Bonneville have low coolant?
Open the cap, when COOL, and look. Low coolant means the heater core gets an air bubble–air doesn’t transfer heat. If it is low, fill. Run car until fully hot and speed up motor to 2500 for a few seconds and repeat this 5 times to push water into heater core and get the air bubble out.