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2004 Gran Prix. Why would my heat/ac blower motor take anywhere from 5 to 30 minutes to kick on after I turn it on?

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Jeff Armer

Cars & Trucks Master 15,575 Answers
Posted on Dec 10, 2016

Jeff Armer

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A bad blower motor control processor ! Electronic's !
Blower Motor Control Processor
The blower motor control processor is an interface between the HVAC control module and the blower motor. The blower motor speed control, battery positive voltage and ground circuits enable the control processor to operate. The HVAC control module provides a PWM signal to the control processor in order to command the blower motor speed. The processor supplies 12 volts to the blower motor through the blower motor voltage supply circuit. The control processor uses the blower motor ground as a low side control to adjust the blower motor speed.

Marvin

Cars & Trucks Master 85,242 Answers
Posted on Dec 10, 2016

Marvin

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Defective blower motor or problems in the Automatic climate control.

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2004 gran prix steering column wiring diagram.

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Dec 10, 2016 • 2004 Pontiac Grand Prix

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Usually a break down in the Blower Motor "resistor" the resistor is bad, not the blower motor...you may need to unplug the blower motor until you find and install the resistor...your parts store can confirm the right part, and location. Hope this helps.

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Feb 23, 2015 • 2004 Pontiac Grand Prix

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The blower motor for thr heat/AC just stopped working. I've checked the fuses and replaced the resistor in the spring. Is there some other relay anywhere?

recheck the resistor. Just cause it isnt very old dosent mean it didnt go bad. Things arent made like they used to be.

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Dec 28, 2011 • 2004 Chevrolet Silverado 1500 Crew Cab

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Blower motr itermittenly dont work except on high sometimes when turning on blower daytime running lights go out

short in the wire harness follow wires from blower to harness

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Aug 12, 2010 • 2002 Pontiac Grand Prix

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2002 gran prix Head lights come on when blower is on high

Sounds like a bad ground connection to the blower housing. Try to eliminate this by connecting one 'battery jumper cable' from the ENGINE or battery (neg) to the blower motor housing. You may have to get clear of some plastic to reach it. Does this change how things work?

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Aug 16, 2009 • 2000 Pontiac Grand Prix

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Heater blower motor only works on high on 2002 pontiac gran prix se-instructions on diy replacement i have the part. Heater Fan works occasionally on speed 5 only. When it doesn't work at all the lights...

for the fan blower motor it could be the resistor or the fan control speed control switch is bad.for no lights replace the DRL RELAY for the lights. for the heated seats check the fuses.

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Jun 01, 2009 • 2002 Pontiac Grand Prix

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2005 Pontiac Gran Prix blower does not work. I check the fuse at HVAC fuse at the end of the dashboard and it is OK. The switch itself activates the AC light on and off when I turn it...

Check the blower motor which is behind the right side of the dash, in the lower right side of the HVAC Assembly, above foot area of the passenger floor. The other thing to test is the blower motor resistor which should be next to the blower motor.

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Jan 28, 2009 • 2005 Pontiac Grand Prix

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Heater and ac blower

I have an '04 with approx. 79000 miles; the blower is going out on mine too. The motor is probably burned out and you will need to replace it. It's about $90 for the part. Kind of a pain to change; I changed the blower motor on my 97 'prix and I had to lay upside down on the passenger seat and work on it upside down. Other than a little physically uncomforable, not too hard to do.

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Nov 22, 2008 • 2004 Pontiac Grand Prix

2helpful

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2004 pontiac gran prix gt

I would suggest replacing the blower motor resistor. When this component fails the blower will only work on one spped or none. This is a very common issue with all automotive models

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Nov 04, 2008 • 2004 Pontiac Grand Prix

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2004 Gran Prix. Why would my heat/ac blower motor take anywhere from 5 to 30 minutes to kick on after I turn it on?

2 Answers

Jeff Armer

Marvin

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Related Questions:

2004 gran prix steering column wiring diagram.

How do I troubleshoot the heater AC blower?

Ac/heater doesn't turn off on a 2004 Pontiac grand prix

The blower motor for thr heat/AC just stopped working. I've checked the fuses and replaced the resistor in the spring. Is there some other relay anywhere?

Blower motr itermittenly dont work except on high sometimes when turning on blower daytime running lights go out

2002 gran prix Head lights come on when blower is on high

Heater blower motor only works on high on 2002 pontiac gran prix se-instructions on diy replacement i have the part. Heater Fan works occasionally on speed 5 only. When it doesn't work at all the lights...

2005 Pontiac Gran Prix blower does not work. I check the fuse at HVAC fuse at the end of the dashboard and it is OK. The switch itself activates the AC light on and off when I turn it...

Heater and ac blower

2004 pontiac gran prix gt

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Cars & Trucks

2004 gran prix steering column wiring diagram.

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Trustworthy Expert Solutions

2004 Gran Prix. Why would my heat/ac blower motor take anywhere from 5 to 30 minutes to kick on after I turn it on?

2 Answers

Jeff Armer

Marvin

Add Your Answer

Attachments: Added items

Related Questions:

2004 gran prix steering column wiring diagram.

How do I troubleshoot the heater AC blower?

Ac/heater doesn't turn off on a 2004 Pontiac grand prix

The blower motor for thr heat/AC just stopped working. I've checked the fuses and replaced the resistor in the spring. Is there some other relay anywhere?

Blower motr itermittenly dont work except on high sometimes when turning on blower daytime running lights go out

2002 gran prix Head lights come on when blower is on high

Heater blower motor only works on high on 2002 pontiac gran prix se-instructions on diy replacement i have the part. Heater Fan works occasionally on speed 5 only. When it doesn't work at all the lights...

2005 Pontiac Gran Prix blower does not work. I check the fuse at HVAC fuse at the end of the dashboard and it is OK. The switch itself activates the AC light on and off when I turn it...

Heater and ac blower

2004 pontiac gran prix gt

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Cars & Trucks

2004 gran prix steering column wiring diagram.

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