Cab Roof Marker Lamp Mounting Clips - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dirtwork · 02-22-2013, 04:48 PM

I had to change out bulbs in two of my c30 roof marker lights. One light went fine, but the other no so well. The threaded insert clips that fit into the square punched holes in the roof came loose and were spinning. I managed to get the screws out without damaging the roof or the lense. Does anyone know a source for those clips?

dirtwork · 02-23-2013, 10:12 AM

Anyone else had this issue? Cant seem to find any type of j bolt that will fit right. My neighbor has to square bodies with the same lights, may have to take one off and see how gm did it then.

buckskins4ever · 02-23-2013, 11:48 AM

Dirtwork, I am switching out to a clear led style light on mine. If you want the original mounting clips I will mail them to you. Send me an email with your address if you want them. Otherwise I think you can purchase new through LMC truck.

bobs409 · 02-24-2013, 08:23 AM

I have to replace one or two on my wrecker project and I'm planning on trimming down a square nut to fit the hole and either epoxy or tack weld it in.

I think they are originally tacked in.

dirtwork · 02-24-2013, 10:03 AM

I did check LMC truck and buckskins4ever you are right they offer a clip which they describe as a J-nut on their site. It is the same part offered for the 73-87 trucks as well, on which those j nuts is how it was done from the factory. They are really inexpensive so I may order some and see because that would be a simple fix.

Bobs409, thats a good idea, I never thought of trying that route. I would have to epoxy mine in as the roof is not being painted right now. They are 10-24 machine screws so a square nut may be pretty close to fitting with little effort.

BLAZERMAN · 02-24-2013, 10:33 AM

Any good hardware store should have them, I've bought them at my local Westlake Hardware before.
Posted via Mobile Device

**hatzie** · 02-24-2013, 10:34 AM

10-24 rivet nuts might be useful.
http://www.mcmaster.com/#rivet-nuts/=lm925n

dirtwork · 02-24-2013, 11:52 AM

I did try the local hardware store here with no luck. I will have to try a couple others that are bigger than the one here in my travels this week. I also thought about the plastic inserts like used on license plate screws only in a smaller version.

SS Tim · 02-24-2013, 05:21 PM

Are they the same as the inner grill screw inserts on a 71-72, I just can't remember? If I can timewise I'll look up the P/N later.

dirtwork · 02-24-2013, 06:24 PM

The original nuts in the roof are steel, I thought about using something similar to the grill inserts to repair it.

02-22-2013, 04:48 PM	#1
dirtwork Registered User Join Date: Jan 2012 Location: Chardon, Ohio Posts: 81	Cab Roof Marker Lamp Mounting Clips I had to change out bulbs in two of my c30 roof marker lights. One light went fine, but the other no so well. The threaded insert clips that fit into the square punched holes in the roof came loose and were spinning. I managed to get the screws out without damaging the roof or the lense. Does anyone know a source for those clips?

02-23-2013, 10:12 AM	#2
dirtwork Registered User Join Date: Jan 2012 Location: Chardon, Ohio Posts: 81	Re: Cab Roof Marker Lamp Mounting Clips Anyone else had this issue? Cant seem to find any type of j bolt that will fit right. My neighbor has to square bodies with the same lights, may have to take one off and see how gm did it then.

02-23-2013, 11:48 AM	#3
buckskins4ever Registered User Join Date: Dec 2012 Location: Altoona Iowa Posts: 481	Re: Cab Roof Marker Lamp Mounting Clips Dirtwork, I am switching out to a clear led style light on mine. If you want the original mounting clips I will mail them to you. Send me an email with your address if you want them. Otherwise I think you can purchase new through LMC truck.

02-24-2013, 08:23 AM	#4
bobs409 1969 Custom 30 wrecker Join Date: Sep 2001 Location: Pottsville, Pa Posts: 2,611	Re: Cab Roof Marker Lamp Mounting Clips I have to replace one or two on my wrecker project and I'm planning on trimming down a square nut to fit the hole and either epoxy or tack weld it in. I think they are originally tacked in. __________________ Bob 63 Impala 283/PG/3.36 (under restoration) 66 Impala 327/PG/3.36 66 Chevelle SS 409/M22/3.55 69 Chevelle 307/PG/3.08 (future restoration) 69 C10 short stepside 454/TH350/3.73 69 Custom 30 tow truck 350/4 spd/4.10 (resto done, CRUISIN TIME!) 71 Cheyenne 20 fleetside 350/4 spd/4.10 71 Chevelle 6/PG/3.08 72 Chevelle 454/M21/4.10

02-24-2013, 10:03 AM	#5
dirtwork Registered User Join Date: Jan 2012 Location: Chardon, Ohio Posts: 81	Re: Cab Roof Marker Lamp Mounting Clips I did check LMC truck and buckskins4ever you are right they offer a clip which they describe as a J-nut on their site. It is the same part offered for the 73-87 trucks as well, on which those j nuts is how it was done from the factory. They are really inexpensive so I may order some and see because that would be a simple fix. Bobs409, thats a good idea, I never thought of trying that route. I would have to epoxy mine in as the roof is not being painted right now. They are 10-24 machine screws so a square nut may be pretty close to fitting with little effort.

02-24-2013, 10:33 AM	#6
BLAZERMAN Currently Blazerless Join Date: Apr 2000 Location: St. Joseph Mo. Posts: 4,828	Re: Cab Roof Marker Lamp Mounting Clips Any good hardware store should have them, I've bought them at my local Westlake Hardware before. Posted via Mobile Device __________________ 1972 C/30 133" W.B. C&C 1970 GMC 3500 157" W.B. single wheel C&C

02-24-2013, 10:34 AM	#7
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Cab Roof Marker Lamp Mounting Clips 10-24 rivet nuts might be useful. http://www.mcmaster.com/#rivet-nuts/=lm925n __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

02-24-2013, 11:52 AM	#8
dirtwork Registered User Join Date: Jan 2012 Location: Chardon, Ohio Posts: 81	Re: Cab Roof Marker Lamp Mounting Clips I did try the local hardware store here with no luck. I will have to try a couple others that are bigger than the one here in my travels this week. I also thought about the plastic inserts like used on license plate screws only in a smaller version.

02-24-2013, 05:21 PM	#9
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: Cab Roof Marker Lamp Mounting Clips Are they the same as the inner grill screw inserts on a 71-72, I just can't remember? If I can timewise I'll look up the P/N later. __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

02-24-2013, 06:24 PM	#10
dirtwork Registered User Join Date: Jan 2012 Location: Chardon, Ohio Posts: 81	Re: Cab Roof Marker Lamp Mounting Clips The original nuts in the roof are steel, I thought about using something similar to the grill inserts to repair it.



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