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Pontiac Grand Prix Heater blower relay switch

216 messages,  Last post on Jan 05, 2013 at 9:46 AM

You are in the Pontiac Grand Prix Forum.

What is this discussion about? Pontiac Grand Prix, Sedan

Messages Page 12 of 22

#106 of 216 Re: 1999 Pontiac Gran Prix blower motor control module [Gerrit] by gkretchmer

Nov 28, 2008 (5:33 pm)

Replying to: Gerrit (Nov 24, 2008 5:30 am)
Look at the dic/hvac fuze behind the glove box cover. If it has less the 12 volts on the fuze with the heater blower motor in a middle position and the head light switch off, with engine running it is probably the ignition switch. If the heater blower runs set to max (5), the blower motor is good. If the blower fails to run on some settings other than 5 but runs on others, and you have 12 volts or better on the dic/hvac fuze, it is probably the resistor pack, located behind the blower motor above the floor on the passenger side. If you pull the blower motor, oil the bearings, and check the drain hole is open (engine side). The dic/hvac 20 amp fuze is shared by many circuits, the day time run lights, seat heaters, rear window defogger, and the fancy style heater accessories, depending on the exact year of the car. All these are fed by the 60 amp ignition 2 fuze in the engine fuze block, then through the 20 amp dic/hvac fuze with the key switch in between. The DLR is located above the parking brake peddle but not much appears to go wrong with that but less than 12 volts feeding the DLR will not trigger the day time lights. Mitchell has a complete wiring diagram I got from the web for around 12 bucks, an actually has all the circuits in the set, something like 50 pages of complex diagrams! I found them here: http://www.ahdol.com The diagrams in the usual manuals from Checkers are worthless, as is who ever designed the heater resistor pack placement at GM for the Grand Prix. Hope this helps.

#107 of 216 fan moter resistor cover by Piggseye

Dec 08, 2008 (2:33 pm)

Does anyone know where the fan motor resistor is located in grand prix se, 2002

#109 of 216 2004 Pontiac Gran Prix blower motor control module [Gerrit] by KAY65

Dec 17, 2008 (10:50 am)

Replying to: Gerrit (Nov 24, 2008 5:30 am)
I have a 2004 Pont GP. My blower will not shut off even when the engine is not running. It will only blow on #5. I have pulled every possible fuse in both electrical panels and nothing shuts it off. I took it to a mechanic and the only thing that he could do was to disconnect the blower all together. Now, I am without heat & window defroster which is a necessity. Please give me the magic CURE that's not going to cost an arm and a leg. Thanks in advance.

#110 of 216 2004 Pontiac Grand Prix Blower Problems by KAY65

Dec 17, 2008 (10:51 am)

I have a 2004 Pont GP. My blower will not shut off even when the engine is not running. It will only blow on #5. I have pulled every possible fuse in both electrical panels and nothing shuts it off. I took it to a mechanic and the only thing that he could do was to disconnect the blower all together. Now, I am without heat & window defroster which is a necessity. Please give me the magic CURE that's not going to cost an arm and a leg. Thanks in advance.

#111 of 216 More of the Same Plus by lberg

Dec 17, 2008 (6:43 pm)

1st the ignition switch would not go back to the off position but I'm able to stick a screwdriver up the hole under the column..works good
2nd gas gauge freaks out..up and down..have to watch my trip odometer
3rd the radio digits go haywire the come back
4th winter and I freeze windows up on inside
5th blower doesn't work..managed to " unthaw " it and worked..sort of
6th now it only works in the 5 position
7th Sell this 2001 Gran Prix???? Kinda depressing

#112 of 216 Re: 2004 Pontiac Grand Prix Blower Problems [KAY65] by 348ironworker

Dec 20, 2008 (8:16 am)

Replying to: KAY65 (Dec 17, 2008 10:51 am)
I am currantly experiencing the same condition with exact automobile and have come to learn the problem is called blower motor resistor. Thats what NAPA autoparts use for nomenclature. Others call it a module. Price ranges from 65.00 to 100.00 at dealerships. The fasteners used are metal rivots which does not replacement as easy as i had hoped since it's 15 degrees outside and i have no garage.
 
hope this helps and you are able to enjoy the holidays.

#113 of 216 Re: 2004 Pontiac Grand Prix Blower Problems [348ironworker] by craig32

Dec 20, 2008 (9:03 am)

Replying to: 348ironworker (Dec 20, 2008 8:16 am)
Careful!
 
Although, apparently, the 2 things that are the most common to go bad (eg., the blower motor itself, or the resistor, just outside the blower), many people went & bought the resistor, only to find they spent money for nothing, as this wasn't the cause.
 
Don't install the new resistor,...just , carefully, plug it in, to see if this fixes things (that way, you can retiurn it for a refund, if it doesn't!).
 
I haven't had air/heat for 2 years (but live where climate is bearable).
 
And, same as most: fan speeds stopped working until only #5 setting would work,...but then, not even that!
 
It should be asimple fix (anyone know how to test the body control module, without removing half the dash???
 
There must be a way of feeding getting the blower to work, & still send power to work the neccessay vacuums, other necc systems for air/heat, without fixiing the ignition wiring (it's a BIG job!).

#114 of 216 blower will not engage 10 minutes after starting by defosto

Jan 18, 2009 (12:44 pm)

I have a 2004 grand prix gt.When I start the engine and turn the heat on the blower will only come on after about 10 minutes of driving.The blower works fine once it's running but if I shut the car and restart then I go through the same thing again.

#115 of 216 2004 grand prix blower will not run by defosto

Jan 18, 2009 (4:20 pm)

Messages Page 12 of 22

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