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I have a 2001 Pontiac Grans Prix. The heater doesn't blow…

Customer Question
I have a 2001 Pontiac...
I have a 2001 Pontiac Grans Prix.
The heater doesn't blow air. I replace the blower resister, still no luck. When I turn on my blower motor, the daytime running lights go out. Turn the blower off, and the lights come back on. I looked at the wiring schematic , and it doesn't appear that the two are on any way connected.
Any
Clues ???
Submitted: 2 years ago.Category: Pontiac
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Answered in 2 minutes by:
1/30/2016
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago
Gary
Gary, Pontiac Technician
Category: Pontiac
Satisfied Customers: 17,980
Experience: 15 years GM master tech/15 years ASE master
Verified

I am sorry your having this problem

the blower motor will NOT run on high speed at all ?

do you have a multi meter on hand ?

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Customer reply replied 2 years ago
Correct!
I do not have a multi meter.
The thing that baffles me is that the daytime running lights go out.
Before I install the new resistor, it would run on high speed untill I tried to run on a lower speed, and the. It would sti turn off the headlights in daytime mode.
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago

we would really need a multi meter to find out what is going on here

those 2 can be related by a low power issue to a few fuses or a common ground being bad would also cause the relationship between the 2 acting up

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Customer reply replied 2 years ago
I'll get one!
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago

ok

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Customer reply replied 2 years ago
Just to be sure we're talking about the right tool, I have a "volts/ohms tester". Multimeter is something else?
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago

yes volts and ohm tester

we need to see with the car ON and the blower set to high speed if the orange wire at the resistor shows 12 volts

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Customer reply replied 2 years ago
Ok,
It reads out at 14 volts. So it's getting power.
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago

correct

now unplug the resistor and with the car ON and blower set to high put the red meter lead to the orange wire terminal in the connector and the black lead to the black wire terminal in the connector NOT any of the 2 wires from the resistor to the blower motor itself but just on the connector that does NOT go to the blower motor what will it read for volts ?

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Customer reply replied 2 years ago
Damn!
My jumper wire touched ground and I blew a fuse somewhere. Looking for it now. Do you know off hand which one it would be?
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago

it should be the fuse called HVAC/CONTR in the inside fuse box

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Customer reply replied 2 years ago
Ok, good call!
But again, hooking the black wire of the meter to the black wire not connector , and the red wire on the meter to the orange wire in the connector, I read 14 volts again.
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago

so testing at the orange wire terminal and the black wire terminal 14 volts ?

does the other orange show 12 volts ?

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Customer reply replied 2 years ago
It's actually showing about 9 volts
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago

if those powers check out can you return the resistor and try out a new one ? from the sounds of this that resistor is defective

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Customer reply replied 2 years ago
I still have the other problem....why does the daytime running lamps go out when I turn on the blower ?
Customer reply replied 2 years ago
Thanks Gary
I tried a new resistor , but I keep having the same problem.
Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 2 years ago
Eric
Eric, Automotive Repair Shop Manager
Category: Pontiac
Satisfied Customers: 34,588
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified

HI,

Different expert here.

This is a very common issue on the 2001-2004 Grand Prix. The problem is a faulty ignition switch, which does send power to both the blower motor and the running lamps. I have replaced at least 30 over the last few years for this issue. Replace the ignition switch(not the ignition key cylinder) and it will resolve this issue

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Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 2 years ago

I noticed we have not yet resolved your concern you asked about. I would sure appreciate it if you would reply so I can offer my skills and knowledge and repair guide access to help as best I can.

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Pontiac Mechanic: Eric, Automotive Repair Shop Manager replied 2 years ago

I noticed we have not yet resolved your concern you asked about. I would sure appreciate it if you would reply so I can offer my skills and knowledge and repair guide access to help as best I can.

~Do you still need more help?
~Confused by my info request or answer?
~Need more time?
~Confused on how the site works?
~Need more detail or a different explanation?

If the answer is YES to any of these just press reply and lets work on this concern some more.

If you have new questions now or in the future please do not hesitate to ask them. If you would like me to assist you. Just bookmark this page so you can access my profile easy and post a new question from the question box on my profile page.

Please remember to rate service using the rating page so that I may receive credit. Thanks

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