97 grand prix heater blower troubles

[chevelle_6969]

hi
just wondering if someone cant help before i tear out all my hair. my 97 grand prix heater motor has issues. when i got the car the heater fuse was blown, replaced fuse they blew again. Changed the blower motor and the resister. Heater blower then worked on 3,4, and 5 but not 1 and 2. Worked for half the day then blew another fuse. Replaced fuse again and hit a bump and the blower stopped again. Awhile later tryed it again and it worked on 5 (high) only.So I replaced the blower motor switch and nothing blower is still working on high only. If there is anyone out there that can help me with this would really be appreciated. I really like my Grand Prix but it is way to cold in ND to not have a heater working.

[GTP Dad]

Welcome to AF!

This sounds like you have a wiring issue. There is a connector from the ignition switch to the rest of the car. It is a common problem but it is not really a diy replacement.

Check out this thread for more information.
http://www.automotiveforums.com/vbul...72#post2082872

[chevelle_6969]

Originally Posted by chevelle_6969

hi
just wondering if someone cant help before i tear out all my hair. my 97 grand prix heater motor has issues. when i got the car the heater fuse was blown, replaced fuse they blew again. Changed the blower motor and the resister. Heater blower then worked on 3,4, and 5 but not 1 and 2. Worked for half the day then blew another fuse. Replaced fuse again and hit a bump and the blower stopped again. Awhile later tryed it again and it worked on 5 (high) only.So I replaced the blower motor switch and nothing blower is still working on high only. If there is anyone out there that can help me with this would really be appreciated. I really like my Grand Prix but it is way to cold in ND to not have a heater working.

thanks for the reply.. and that looks like a difficult job to do replacing the harness

[BNaylor]

Originally Posted by GTP Dad

This sounds like you have a wiring issue. There is a connector from the ignition switch to the rest of the car. It is a common problem but it is not really a diy replacement.

Check out this thread for more information.
http://www.automotiveforums.com/vbul...72#post2082872

Interesting post Lynn. Don't know if this will help the guy out but here is a link to a variation of the ignition switch R&R procedure with some pics:


http://www.clubgp.com/newforum/tm.as...smode=1&cookie


Another one:

BEFORE BEGINING THIS REPAIR REMOVE THE NEGATIVE TERMINAL FROM THE BATTERY. IT IS NOT POSSIBLE TO DO THE REPAIR WITHOUT DOING THIS.

Look inside the slot where the tilt steering knob is located. There is a black metal piece where the knob inserts into the tilt mechanism. Pry it back slightly with a small screwdriver. One from an electronics tool set will work. While you have it pried, pull the knob out and it should release.

Remove the two screws from the bottom of the steering column cover and remove the cover.

Remove the two screws that hold the top steering column cover in place.

Insert the ignition key into the key cylinder and turn the key clockwise to the start position. Nothing will happen because you have disconnected the battery prior to starting this project. Lift the top steering column cover being careful not to break it because it is still held in place by the ignition key cylinder. You will see with your mirror near the back end of the cylinder housing a small hole. Stick a small allen wrench in the hole, this will release the key cylinder so that it can be pulled out. Once the key cylinder is removed the column top cover is free to be removed.

The black box below the key cylinder with all of the wires coming out of it is the ignition switch that you are changing. Look at the switch you have purchased for this repair. Notice that the small white plug with two wires attached has a tab on the side that can be pushed down, this is the release for the plug-in. Using your mirror you will see that plug-in against the ignition switch housing where it plugs in. Using a small screw driver press the release tab in against the plug and rotate the plug 90 degrees to the right to remove it. To do otherwise may break the plug.

Remove the plug from the white key release device by inserting a small screw driver and pressing the release tab on it.

Undo the two screws holding the ignition switch.

Undo the plug at the opposite end of the ignition switch by unscrewing the bolt in the center of the plug and unplugging it.

There is a black wiring plug on top and a gray one on the bottom of the ignition switch plug that need to be removed. This is done by prying the center of the plug case where it meets the ignition harness plug while sliding it forward.

Cut any tywraps holding the wire harness in place and feed it out of the dash.

To install do the reverse of the above, and tywrap the new harness into place. Be sure to properly align the key cylinder when replacing it in the housing and if the key will not come out of the cylinder there is a silver key release button at the bottom of the white device in front of the ignition switch. Press it and the key will come out. Also when replacing the ignition switch make sure that the slot in the switch is properly aligned with the corresponding part on the steering column that fits in the slot.