ZR-1 Net Registry Forums  

Go Back   ZR-1 Net Registry Forums > C4 ZR-1 > C4 ZR-1 Technical Postings

Reply
 
Thread Tools Display Modes
Old 06-19-2021   #1
chesnut
 
Join Date: Oct 2019
Location: Mansfield, TX
Posts: 148
Default CDM Fuse Panel Removal

Pulling the CDM to send in for repair and can't figure out how the fuse panel is attached to the plastic bracket underneath the CDM.

Any help and ideas are appreciated.

Thanks,

Gary
....
Attached Images
File Type: jpg IMG_3349_cropped.jpg (152.1 KB, 65 views)
chesnut is offline   Reply With Quote
Old 06-19-2021   #2
Matt B
 
Matt B's Avatar
 
Join Date: Jan 2021
Location: Beautiful Bavaria
Posts: 523
Default Re: CDM Fuse Panel Removal

If I remember correctly step 1 is to split all connectors and get the entire wiring out of the way. Then there are 4 10mm hex Nuts that hold the plastic carrier in place. Remove them to get some clearance. But be careful as the plastic latches they attach to are prone to break.
The fuse holder is slid in from underneath (again, if I remember correctly). So pushing the CDM upwards and pulling the fuse holder vice versa will allow you to remove it. Maybe it's the other way around, just try.
Even then it's a PITA to actually pull the CDM out of the dash. I strongly recommend to remove the seat - not necessarily needed but makes things way easier.

I will have to pull mine again shortly due to a unsuccessful repair. Beer will play a key role in that operation...

Sent from my SM-G991B using ZR-1 Net Registry mobile app
__________________
ZR-1 #638/1991
Matt B is offline   Reply With Quote
Old 06-19-2021   #3
Dynomite
 
Dynomite's Avatar
 
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
Default Re: CDM Fuse Panel Removal

This may help

Post 139 - Bose Speaker Amps and CDM Replace
Dynomite is offline   Reply With Quote
Old 06-20-2021   #4
TX '90 ZR1
 
TX '90 ZR1's Avatar
 
Join Date: Oct 2017
Location: TX
Posts: 2,038
Default Re: CDM Fuse Panel Removal

Here is a link to the thread I posted while doing the CDM in my '90.

http://www.zr1.net/forum/showthread....&highlight=CDM

Notice I did 90% of the work from the side. Did not disturb any of the connections under the CDM.
As I mention in the thread, the worst part are the connectors on the drivers side. Took me a couple of stabs at getting the CDM turned just right to go in and out, but at the proper angle was not too bad.
Good luck!
__________________
Kenny
1990 #442
TX '90 ZR1 is offline   Reply With Quote
Old 06-20-2021   #5
Matt B
 
Matt B's Avatar
 
Join Date: Jan 2021
Location: Beautiful Bavaria
Posts: 523
Default Re: CDM Fuse Panel Removal

Just to make sure I understand - did you eventually remove the CDM towards the footweel or did you pull it to the side with all other connectors remaining plugged? That would save a lot...

Sent from my SM-G991B using ZR-1 Net Registry mobile app
__________________
ZR-1 #638/1991
Matt B is offline   Reply With Quote
Old 06-20-2021   #6
chesnut
 
Join Date: Oct 2019
Location: Mansfield, TX
Posts: 148
Default Re: CDM Fuse Panel Removal

Guys,

Appreciate everyone's posts. My question is - how to get the underdash fuse panel off of the plastic wiring loom retainer that's under the CDM/DCM/Radio?

Thanks,

Gary
....
chesnut is offline   Reply With Quote
Old 06-20-2021   #7
TX '90 ZR1
 
TX '90 ZR1's Avatar
 
Join Date: Oct 2017
Location: TX
Posts: 2,038
Default Re: CDM Fuse Panel Removal

Quote:
Originally Posted by chesnut View Post
Guys,

Appreciate everyone's posts. My question is - how to get the underdash fuse panel off of the plastic wiring loom retainer that's under the CDM/DCM/Radio?

Thanks,

Gary
....
Sorry. I just assumed you were trying to remove the CDM.
I did not do anything as far as removing/disconnecting the fuse panel.
Wish I could help, but have not been there and hope I don't have to go!
__________________
Kenny
1990 #442
TX '90 ZR1 is offline   Reply With Quote
Old 06-20-2021   #8
chesnut
 
Join Date: Oct 2019
Location: Mansfield, TX
Posts: 148
Default Re: CDM Fuse Panel Removal

see the photo in post #1

Am unable to get the plastic bracket out that's underneath the CDM/DCM/Radio until the fuse panel can be detached from the plastic bracket.

How to detach the under dash fuse panel from the plastic bracket that the wire looms are attached to, so the plastic bracket can be removed to enable removal of the CDM/DCM/Radio unit.

Thanks,

Gary
....
chesnut is offline   Reply With Quote
Old 06-20-2021   #9
Corvette95
 
Corvette95's Avatar
 
Join Date: Jan 2006
Location: Decatur, AL
Posts: 1,119
Default Re: CDM Fuse Panel Removal

The plastic "rider" that the CDM sits on has three 10mm bolts on it. If you are referring to the (going from memory here) the 4 fuse holder that includes the fuse to FP2 slides off like the relays from under the steering column. The are two retainers on the back of the rider and the fuse panel (4 fuse) slides off to passenger side BUT I found the only way to remove it without breaking either the plastic housing or the retainers is to remove the CDM and plastic carrier, lower that then slide the fuse panel off. I have seen MANY that the dealership, back in the day, purposely broke the housing to facilitate quick removal and then just shove the fuse panel back in where it will fit - causing , at the very least, rattles, and more common, a short to ground. ( I removed the upper dash pad, and the passenger side braces last time I did it but I was working on other items in the area as well)
__________________
Corvette95 Registry and Forum (*************)
1989 C4 Conv Wht/Gry Auto Hardtop Top Flight SOLD
1995 C4 Coupe Purple/Blk 6 Speed
1989 C4 Conv Wht/Red Auto SOLD
1996 C4 Conv Black/Tan Auto SOLD
1994 C4 Coupe Wht/Blk SOLD
1995 C4 ZR-1 White/Gry #278 Dual Dunn Head SOLD
1986 C4 Coupe Black/Red 4+3 SOLD
1990 C4 ZR-1 Red/Red #0454
Corvette95 is offline   Reply With Quote
Old 06-20-2021   #10
TX '90 ZR1
 
TX '90 ZR1's Avatar
 
Join Date: Oct 2017
Location: TX
Posts: 2,038
Default Re: CDM Fuse Panel Removal

Quote:
Originally Posted by chesnut View Post
see the photo in post #1

Am unable to get the plastic bracket out that's underneath the CDM/DCM/Radio until the fuse panel can be detached from the plastic bracket.

How to detach the under dash fuse panel from the plastic bracket that the wire looms are attached to, so the plastic bracket can be removed to enable removal of the CDM/DCM/Radio unit.

Thanks,

Gary
....
OK Gary. If your goal is to remove the CDM you do not need to remove the bracket or the fuse box. The CDM can come out the side without disconnecting anything under it.
__________________
Kenny
1990 #442
TX '90 ZR1 is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:22 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright ZR-1 Net Registry 2020