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Username Post: '04 Denali license light/parking brake        (Topic#356738)
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
06-09-19 08:51 AM - Post#2768030    

'04 Yukon Denali
It won't pass inspection. Only 2 things remain. Nonworking license plate lights and parking brakes. The parking brakes were toast. 224XXX miles. The one piece shoe was nothing but metal! It still won't hold. I'm going to replace all the adjuster pieces and try again. The new shoes went on fast.

The rear license plate lights don't work. I found one burned bulb. I replaced both sides. Bulbs #194. Neither side work. I did find that each one has a separate fuse and works with rear lights. All the rear park lights work so fuses are good. I checked them. Where is the plate light ground? I'm taking my power probe next time out. If it has power, I'll check the ground side. If both check out, then the bulb sockets are bad.

Any suggestions on what else to check?

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


Edited by gchemist on 06-13-19 04:45 AM. Reason for edit: No reason given.

 
wagonman100 
Super Senior Member
Posts: 14298
wagonman100
Loc: Baltimore, MD
Reg: 11-27-04
06-10-19 07:33 PM - Post#2768182    
    In response to gchemist

Sounds like you have a pretty good handle on it. My parking brake was the same way. I fixed everything last year. The new shoes came with all of the other parts too. Mine stopped working when my backing plates rusted away. Works great now.
You’re on the right track with the lights too. Test the power side and then the ground side if you are getting power. I think the ground wire is in the harness. I don’t think it bolts anywhere underneath. Test the wires as well as the sockets. If the wires test okay, but the lights don’t work (and you know you have good bulbs) you know the problem is in the socket. I have had to bend out the wires on 194 bulbs to get them to work before.

Jay
Friends don’t let friends drive Fords.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon
1957 Cameo Carrier


 
someotherguy 
Senior Moderator
Posts: 28996
someotherguy
Age: 49
Loc: Texas
Reg: 08-01-03
06-11-19 07:44 AM - Post#2768211    
    In response to wagonman100

If the Denali is like the pickups, then the various rear lamp harnesses plug in at a central location behind the bumper. I'd suspect a bad ground in that one harness between the lamps and the plug, since you say the other rear lamps are working correctly.

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
rockfangd 
"6th Year" Gold Supporting Member
Posts: 2733
rockfangd
Age: 33
Loc: Utica ny
Reg: 04-13-10
06-11-19 07:21 PM - Post#2768275    
    In response to someotherguy

Bad ground or burnt wire in the 2 pin plug that goes from the rear lamp harness to the lamps.
Doubt there are 2 fuses for them.
Most every set I have seen is tied together

Old School GM fan FOREVER


 
wagonman100 
Super Senior Member
Posts: 14298
wagonman100
Loc: Baltimore, MD
Reg: 11-27-04
06-11-19 07:55 PM - Post#2768279    
    In response to rockfangd

Oops, forgot to mention they are not on separate fuses. I’m not certain, but I don’t think they plug in at the rear like the pickups.

Jay
Friends don’t let friends drive Fords.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon
1957 Cameo Carrier


 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
06-12-19 06:09 PM - Post#2768347    
    In response to wagonman100

The fuse box has separate left and right light fuses. LT PARK and RT PARK 15 amp fuses. I didn't see a towing harness under it. Seems the wiring bundle is all one piece or left/right are separate harnesses. I'll take my Power Probe IV tomorrow.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
06-13-19 04:50 AM - Post#2768361    
    In response to gchemist

Ok, bad news. A bolt hold the parking shoe bracket broke off! It's rusted so bad. The back plates are essentially gone. There's nothing there. There's no way to get to the bolt without removing the axle shaft. Are these axles "c" clip style? How do we pull out the shaft to drill and tap the broken bolt? Does anyone have another suggestion fix?

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
DenaliXL 
Contributor
Posts: 168

Reg: 02-25-07
06-13-19 12:56 PM - Post#2768390    
    In response to gchemist

If it’s the same little bolt that holds the shoe retainer clip, I broke mine. What I did was drill a hole on the surface that is 90 degrees to the surface the broken screw goes into. I forget if I tapped the hole or used a self tapper. I also used some yellow weather stripping adhesive. I remember the bolt was a little crooked due to not being able to get a good straight shot with the drill. It lasted over a year. Might get you through inspection.

At some point one of my useless parking brakes started making a weird noise. Might have been that side, can’t recall. I eventually just removed the parking brakes since no longer needed for NJ inspection and they were always problematic and never worked.

The part the screw goes into isn’t the backing plate but does require removing the axle. Also Dorman makes 2-piece backing plates that can be installed without removing the axles. I tried them and a few years later they rotted out too but I was launching a boat on occasion into salt water.



 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
06-14-19 05:16 AM - Post#2768428    
    In response to DenaliXL

DenaliXL, thanks for the suggestion. A small bolt through the clip will work.

The tail lights are on a single harness. I used my power probe and found only one had ground. Neither socket had power. On the right rear side is a module. It has multiple plugs. As soon as I reached for the plug and wiggled it, one bulb came one. I removed the plug and cleaned it. Using compressed air, I blew out the connections. Years of use caused dirt to get into the plugs. Once one plug had power, I wiggled the other. It flickered. I used a pick to close the bulb clips. Now both bulbs work with parking lights.

As for the parking brake, it sucks. The cable adjustment was at max. We tried to remove the nut and the cable came apart. We are waiting on a new intermediate cable. Once we install the new cable, we hope the new brakes hold. Even with its own weight, it moves. It's the last thing we need to fix for inspection.

Now, I'm not sure how much to charge for fixing it. The parking brake has sure done a good job of making us throw things.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
06-15-19 05:00 AM - Post#2768498    
    In response to gchemist

GM made a cable design change. Instead of an adjustable end type, they made it shorter. We bought cable #10391699 at a dealer. The VIN was used. The clerk mentioned it was a design change. It would also be shorter than original designs. It took me a few min but I got installed. The brake cable moved freely and it's tight. We removed the wheels and adjusted the parking brake cylinders. Pedal was tight. We get everything buttoned up and try it. The Denali will hold reverse and neutral. Under power in drive it will not hold. The 26" rims and AWD overpower the brakes. We are at wits end. We can't do nothing else but replace rear cables or try something different.

Anyone have suggestions? I told them to try a different inspection station. Show them all the receipts and work done. They could get an exemption on it.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
DenaliXL 
Contributor
Posts: 168

Reg: 02-25-07
06-15-19 12:33 PM - Post#2768512    
    In response to gchemist

I ran into a situation where I ran out of parking brake cable on mine. What I did was found a hole in the frame and put a 3-4” bolt into the hole with a nut on both sides of frame to hold firm. There was an access slot that I was able to get a wrench in to hold the back nut. Basically I had a bolt sticking out from the frame a few inches. It was a little under where the cable ran. I then loosened the cable and ran it under the bolt so it had to take a slightly longer path. I adjusted it and headed to inspection and passed (back when they checked such things). It may have even been dragging a bit but I didn’t care. After passing I put the cable back to normal although to this day I still have the bolt sticking out from the frame.

I’m a by the book guy although my parking brake fixes sound like MacGyver hacks but I refused to invest more time and money into this crappy design parking brake.



Edited by DenaliXL on 06-15-19 12:36 PM. Reason for edit: No reason given.

 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
06-16-19 05:11 AM - Post#2768537    
    In response to DenaliXL

I thought about making the travel path longer. Can you post or email me a picture of that bolt? Since Texas does check parking brakes, I may need to mock up a longer travel path.

Besides the cable design change, did GM make any other changes to this single shoe system?

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
DenaliXL 
Contributor
Posts: 168

Reg: 02-25-07
06-16-19 07:57 AM - Post#2768552    
    In response to gchemist

I just snapped a couple pics but I don’t have a photo hosting account. If you want to PM me your email I can send them your way. You’re welcome to post them in this thread if you want.



 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
06-16-19 11:50 AM - Post#2768573    
    In response to DenaliXL

Attached are DenaliXL cable lengthening pictures.

The license plate red plug harness is located on the rear right side.

Attachment: denali.jpg (96.28 KB) 6 View(s)


Denali license plate harness. Both bulbs are on the same circuit. The power plug is the big red one.


Attachment: brake1.jpg (70.86 KB) 8 View(s)


Parking brake lengthening. Photo credit: DenaliXL.


Attachment: brake2.jpg (63.88 KB) 9 View(s)


Parking cable lengthening. Photo credit: DenalXL.


'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
DenaliXL 
Contributor
Posts: 168

Reg: 02-25-07
06-16-19 11:55 AM - Post#2768574    
    In response to gchemist

Thanks

Yeah I routed the cable under that added bolt temporarily to make it take a longer path to get through inspection.





 
rockfangd 
"6th Year" Gold Supporting Member
Posts: 2733
rockfangd
Age: 33
Loc: Utica ny
Reg: 04-13-10
06-16-19 12:25 PM - Post#2768578    
    In response to DenaliXL

I asked GM about our 2012 with the horseshoe parking brake and they had no info.
It was DOT inspected every 6 months. The brake would barely hold to save its life. I figured the cable was a little too long from factory

Old School GM fan FOREVER


 
someotherguy 
Senior Moderator
Posts: 28996
someotherguy
Age: 49
Loc: Texas
Reg: 08-01-03
06-17-19 01:39 AM - Post#2768618    
    In response to gchemist

  • gchemist Said:
Attached are DenaliXL cable lengthening pictures.

The license plate red plug harness is located on the rear right side.


LOL... pretty sure I recall typing this:

  • someotherguy Said:
If the Denali is like the pickups, then the various rear lamp harnesses plug in at a central location behind the bumper. I'd suspect a bad ground in that one harness between the lamps and the plug, since you say the other rear lamps are working correctly.

Richard


So while the location is a little different SUV vs. pickup, that's pretty much the same setup the trucks have.

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
06-23-19 03:50 AM - Post#2769036    
    In response to someotherguy

The Denali passed inspection. It still won't hold drive solid. It's enough to slow it down. It holds in neutral and reverse. The problem a has to be on how the cable pulls on the left side. It will be another year before I may need to look at it again. For now, I think the inspection station I took it to is reasonable after showing receipts for parts.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
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