Your thoughts Oppo? 

"zeontestpilot" (zeontestpilot) 10/28/2016 at 09:45 • Filed to: Question

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So I have a ‘07 Pontiac Grand Prix. In the past the the blower motor has stopped working, only to work again the same or next day. Then last Saturday it stopped again, and hasn’t started up. Let me iterate what I’ve done, and please share with me your thoughts.

What I’ve been working with.

So I have heat and a/c, the fan that pushes it into the cabin isn’t working; I’ve confirmed this. I tested the voltage to the blower motor, and had nothing, so I bought a blower motor resistor, got home and installed it, only to find I have no power to the resistor. I jumped the gun on the purchase, I know.

I check the ohms for the [correct] fuse, and there is 0.4. I followed the red and black wires to behind the CD player, and found the connection below.

The connection.

I checked the ohms for the burnt part (aka the red wire), it’s good. I turned on the car and then checked to see if there is power from the female end, and there is 14 v. Baffled, I went to double checked the other wires, and I hear a squeaking...the blower motor has power again.

I should also mention that I’ve found evidence that I’m not the first person to tear the dash apart; there’s a few non-vital screws missing. And the wire from the resistor to connector is wrapped in electrical tape, while everything else is covered in a sheath.

So my thoughts are that the wire is bad from the CD player to the resistor. I think the motor got power once I moved the wire a bit. Does that sound right? Or is there something else I should check?

Thanks in advance.

S65 > zeontestpilot 10/28/2016 at 09:57

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Must be ruined, buy another DD and turn the Pontiac into A rally car

zeontestpilot > S65 10/28/2016 at 10:03

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Yeah, I wish. But that’s what my other car is for...once it gets fixed up and sent back that is....

Demon-Xanth knows how to operate a street. > zeontestpilot 10/28/2016 at 10:08

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I still have the factory service manual on CD from when I had my ‘04.

zeontestpilot > Demon-Xanth knows how to operate a street. 10/28/2016 at 10:13

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They had it on cd? Huh. Finding info on what fuse to check took longer than it should of. Every place I called said to check the manual. When I did checked, I still couldn’t find it, :/.

Demon-Xanth knows how to operate a street. > zeontestpilot 10/28/2016 at 10:14

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If you have patience, I can find an envelope and send it your way. 

TrickJos > zeontestpilot 10/28/2016 at 10:15

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What does that connector plug into? The blower resistor?

Replacing the resistor was probably a good idea since it is the root problem I think. That connector needs to be replaced too. The melted pin probably isn’t making good contact, which would explain the intermittent blower. The wire is probably wrapped in electrical tape because the insulation is melted.

I repaired my dads Colorado a couple months ago. Bad resistor (I think) led to a melted connector and wires. The blower only worked intermittently. Installed a new pigtail and resistor and it’s good to go.

Old connector.

Old resistor compared to the new one.

zeontestpilot > TrickJos 10/28/2016 at 10:20

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I didn’t mention it, but the old resistor had crud on it, so it probably wasnt in good shape.

The connector in the pic goes to resistor. The thing it connects to goes to the battery (I believe).

I was thinking of either contacting a dealer and ask for a price on the wires, or head to a junkyard for the piece.

zeontestpilot > Demon-Xanth knows how to operate a street. 10/28/2016 at 10:21

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It’s the same as the paper version, right?

Demon-Xanth knows how to operate a street. > zeontestpilot 10/28/2016 at 10:31

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It really is something special. It runs on a virtual machine and contains the FSM for every Pontiac sold from around 1998-2008. And if you can figure out how to mess with the user accounts in Windows, you can get to the rest of the GM brands. I bought it off ebay a while back. The biggest downside is that the troubleshooting procedure for the fuel pump assumes you have a Tech-II which damned near no home mechanic would have. (though there are clones now)

TrickJos > zeontestpilot 10/28/2016 at 10:43

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I think you’ll be good to go once you get that connector and the wires replaced. I don’t remember what I paid for the Colorado part, but I remember being surprised about how inexpensive it was.

MontegoMan562 is a Capri RS Owner > zeontestpilot 10/28/2016 at 11:12

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Wait is the PT joining me in Rally? Plenty of space in the back of it for rally wheels/tires!

I sense a Race Team starting

zeontestpilot > TrickJos 10/28/2016 at 11:21

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Calling the dealership now.

zeontestpilot > MontegoMan562 is a Capri RS Owner 10/28/2016 at 11:23

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Ha, it was a joke, but it would be cool. Not sure if we’re keeping it or not. Brother in law is fixing it for free, we’re just paying for the parts.

zeontestpilot > Demon-Xanth knows how to operate a street. 10/28/2016 at 11:39

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Really? Will have to YouTube an example then.

Demon-Xanth knows how to operate a street. > zeontestpilot 10/28/2016 at 11:41

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Yeah, it said “Command to run the fuel pump for 3 seconds.”