Question about 1997 Buick Park Avenue

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97 Buick Park Ave, Non-Ultra. Rear Window Defroster not working. All indicators on the control panel are working. Could it be a fuse? Where is the fuse? Or could it be something else that I can fix. Thanks.

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6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: where is the fuse panel on a 1998 park avenue ultra?

I just accessed mine. It is under the rear seat. You just lift up on the seat, and it pops right out. If you are having problems with the rear defroster, it could very likely be the control module. This is a combination module which the rear antenna, and the defroster grid plugs in to.
When mine went out I smelled a "burnt wire" smell, then it went out.
To access the module, sit in the back seat, drivers side. There is a trim panel that will be by your left ear as you are looking forward. It is the panel that flares down from the ceiling to the rear deck. Gently pull at the edge of this panel, working around the edges, and the small strip which continues over the top of the door.
The seatbelt goes through this panel, so it will be hanging from the seatbelt at this point. There is a ~3" square, black module with the defroster input and output wires, and the antenna wire plugged into it.
You just unplug the wires, pull the one mounting screw, and voila!
On mine the module was obviously melted, as was the wire going into it. I got the replacement from a salvage yard, as the new one was over $50, and the replacement wire was $18. The salvage yard was unable to look it up, so I had to go out to the yard with them and pull it myself. The final cost was $17 (they tried to charge me $40, and I told them I could get it online for that, and they dropped the price).
You can use a crimp on **** connector to put in the replacement wire, but because of the heat in that area I chose to solder the wires together.
BTW, this module fits a wide range of Buicks, and full size Olds.
Hope this helps.

Posted on Jan 20, 2009

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  • 1596 Answers

SOURCE: rear defroster and air pump not working

Check for Blown FUSEon both Items , Then Check for BAD RELAYS on BOTH Items.

Posted on Apr 11, 2009

  • 98 Answers

SOURCE: 1998 buick park ave. rear window defroster not working

Rear Defogger Inoperative, But Heated Mirrors Operate Correctly
1. Connect scan tool. Turn ignition switch to RUN position. Turn rear defogger on. Using scan tool, display BCM
outputs. If rear defogger is being requested on, go to next step. If rear defogger is not being requested on, go to
step 10).
2. Ensure ignition switch is in RUN position. Remove rear defogger relay from rear junction block, located on center
right rear of passenger compartment, under rear seat. Connect test light between ground and defogger relay
harness connector terminal F3 (Brown wire). If test light illuminates, go to next step. If test light does not
illuminate, go to step 11).
3. Connect test light between ground and defogger relay harness connector terminal A2 (Red wire). If test light
illuminates, go to next step. If test light does not illuminate, go to step 12).
4. Connect test light between defogger relay harness connector terminals A2 (Red wire) and B3 (Purple wire). If test
light illuminates, go to step 13). If light does not illuminate, go to next step.
5. Disconnect rear defogger positive and negative feed bus connectors. Connect a jumper wire between defogger
relay harness connector terminals F3 (Brown wire) and A4 (White wire). Connect test light between ground and
positive feed bus connector terminal "A" (Black wire). If test light illuminates, go to next step. If test light does not
illuminate, go to step 8).
6. Connect test light between positive feed bus connector terminal "A" (Black wire) and negative feed bus connector
terminal "B" (Black wire). If test light illuminates, go to next step. If test light does not illuminate, go to step 9).
7. Repair open in Black wire between rear defogger and ground. Recheck system operation.
8. Repair open in Purple wire between rear junction block and heated backlight antenna module. Recheck system
operation.
9. Check for proper terminal contact at rear defogger connectors. Repair as necessary. Recheck system operation.
10. Check for proper terminal contact at BCM. If terminal contact is okay, replace BCM. Recheck system operation.
11. Repair open in Brown wire between rear junction block and instrument panel junction block. Recheck system
operation.
12. Repair open in Red wire between rear junction block and underhood junction block (located in right front corner of
engine compartment, between battery and strut tower). Recheck system operation.
13. Connect test light between defogger relay harness connector terminals F3 (Brown wire) and A4 (White wire). If
test light illuminates, go to next step. If test light does not illuminate, go to step 16).
14. Reinstall defogger relay. Disconnect BCM 32-pin Pink connector C2. BCM is located behind right side of instrument
panel, near rear of glove box. Using DVOM, check voltage between ground and BCM harness connector C2
terminal A3 (White wire). If any voltage is present, go to next step. If no voltage is present, go to step 17).
15. Repair open or short to ground in White wire between rear junction block and BCM. Recheck system operation.
16. Check for poor connection at defogger relay terminals. If connections are okay, replace defogger relay. Recheck
system operation.
17. Check for proper terminal contact at BCM. If terminal contact is okay, replace BCM. Recheck system operation.

Posted on Feb 25, 2010

michaeltgagn
  • 2 Answers

SOURCE: REAR DEFROSTER NOT WORKING 2000

Are you having problems with you PA rear defrost not working? I have the resolution. There is a relay/module that is behind the rear driver side pillar that fails. Actually, the connection between the module and connector burns out and I guess this is pretty typical.

All you need to do is remove the plastic covering above/between the drivers side rear door and rear window. Be patient in removing this as you may break a piece of hardware that reconnects it to body. Locate the black module on the pillar. You will notice and connector going into this module and going out of the module. Also, the antenna is also connected to this module. Look for the burned connector. I suggest you purchase these items online since it is cheaper as opposed to a dealership.

I suggest ordering part numbers:
Part Number 25623688
Part Number 15305949

Posted on Sep 01, 2012

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1 Answer

I installed a new blower motor in my 97 buick park ave the new motor only has one connector so I'm left with a loose wire now I have no interior lights no rear defrost and my air bag light is on


One connector with two wires . A red an black . They both come from the blower control module . You have the wrong wires , because this would not effect the lights or make the air bag light come on or not cause rear defroster not to work .

Nov 10, 2015 | Buick Cars & Trucks

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REAR DEFROSTER NOT WORKING 2000 BUICK PARK AVE


Hello,

First I would look for a blown fuse, do you have an indicator lamp that turns on when you push it? Dose the light come on? If not a fuse or relay will most likely be the problem.

If the rear "grid" on the defroster only works in some areas then you have a broken link, the grid needs to be connected for it to work.

Check your fuses & or relays, check your grid for broken links, you can buy a repair kit for the grid at most auto part stores.

Hope this helps.

Dec 29, 2010 | 2000 Buick Park Avenue

2 Answers

Back defrost don't work on 97 buick park avenue


Regarding the repair of the rear window defroster. There is a "electric ACD module" on the inside rear driver side roof sail that connects to the rear defroster and antenna. I had the same problem and found the connector for the defroster had overheated and melted resulting in a failed connection. The NAPA part numbers for the module and replacement connector are 25623688 and 15305949.


Oct 07, 2009 | 1997 Buick Park Avenue

2 Answers

Need wiring diagram for rear defroster.


The common problem with the rear defrost not working on a park ave is the antenna integration modules on the rear c-pillars. This is the way they make the rear defrost and antenna part of the same grid on the rear window. If your external mirrors are heating up, the rear window is getting juice too. They are fed from the same circuit. And yes, the relay does go in a particular way. Compare it to the position of the others nearby and insert with the same orientation.

Sep 15, 2009 | 2000 Buick Park Avenue

1 Answer

My 91 prk ave has power going to the radio and heater controls, but nothing works, except the rear window defroster which won't stop working. Is it the little black box under the right hand dash causing...


It sounds like you don't have a ground going to those areas. I think I would check for a ground...maybe pull the fuse on the rear defroster and see if it is even a part of the problem.

Aug 23, 2009 | 1991 Buick Park Avenue

1 Answer

Rear defroster and air pump not working


Check for Blown FUSEon both Items , Then Check for BAD RELAYS on BOTH Items.

Apr 11, 2009 | 2000 Buick Park Avenue

1 Answer

Where is the fuse panel on a 1998 park avenue ultra?


I just accessed mine. It is under the rear seat. You just lift up on the seat, and it pops right out. If you are having problems with the rear defroster, it could very likely be the control module. This is a combination module which the rear antenna, and the defroster grid plugs in to.
When mine went out I smelled a "burnt wire" smell, then it went out.
To access the module, sit in the back seat, drivers side. There is a trim panel that will be by your left ear as you are looking forward. It is the panel that flares down from the ceiling to the rear deck. Gently pull at the edge of this panel, working around the edges, and the small strip which continues over the top of the door.
The seatbelt goes through this panel, so it will be hanging from the seatbelt at this point. There is a ~3" square, black module with the defroster input and output wires, and the antenna wire plugged into it.
You just unplug the wires, pull the one mounting screw, and voila!
On mine the module was obviously melted, as was the wire going into it. I got the replacement from a salvage yard, as the new one was over $50, and the replacement wire was $18. The salvage yard was unable to look it up, so I had to go out to the yard with them and pull it myself. The final cost was $17 (they tried to charge me $40, and I told them I could get it online for that, and they dropped the price).
You can use a crimp on **** connector to put in the replacement wire, but because of the heat in that area I chose to solder the wires together.
BTW, this module fits a wide range of Buicks, and full size Olds.
Hope this helps.

Jan 09, 2009 | 1998 Buick Park Avenue

2 Answers

'Whats wrong when my back window wont defrost in my 97 park ave.'


i am also having the same problem. I think it might be the fuse,but I must it first.

Jan 06, 2009 | 1997 Buick Park Avenue

1 Answer

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check the ground on the passenger side of the rear window under the trim panel. That is what was wrong with mine.

Dec 22, 2008 | 1999 Buick Park Avenue

2 Answers

FUES BOX


there are 3. One is under the hood on r/h side. one is under inst. panel on r/h side and one is under the rear seat.

Aug 13, 2008 | 1999 Buick Park Avenue

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