The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board > The 1973 - 1991 Blazers, Jimmys, and Suburbans Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 08-06-2017, 06:48 PM   #1
ADub
Registered User
 
Join Date: Dec 2010
Location: Houston, TX
Posts: 217
Whats this switch

Can anyone tell me what this piece is thats circled in the photo? I have a hole on each side of my K5, not sure what goes there. I would have guessed its the dome light switch, but my 78 has them installed on the front door jamb
Attached Images
 
__________________
69 C10 SWB LY6 T56
70 Chevelle SS 396 4spd

Last edited by ADub; 08-06-2017 at 07:16 PM.
ADub is offline   Reply With Quote
Old 08-06-2017, 09:58 PM   #2
buffydores
Senior Member
 
buffydores's Avatar
 
Join Date: Mar 2016
Location: Longview, TX
Posts: 526
Re: Whats this switch

Seat belt release. They were like that through like '87 I think.
buffydores is offline   Reply With Quote
Old 08-07-2017, 06:59 AM   #3
ADub
Registered User
 
Join Date: Dec 2010
Location: Houston, TX
Posts: 217
Re: Whats this switch

How do they function? Ive got shoulder belts on my truck, but its currently disassembled. I remember them working fine without the releases?
__________________
69 C10 SWB LY6 T56
70 Chevelle SS 396 4spd
ADub is offline   Reply With Quote
Old 08-07-2017, 02:00 PM   #4
Ski-me
Registered User
 
Ski-me's Avatar
 
Join Date: May 2012
Location: Colo Springs, CO
Posts: 643
Re: Whats this switch

It may indicate your shoulder belts may not be performing properly. Otherwise, I think they lock up....but I'm not positive. Or won't suck in tension..don't remember.

My 89' has them, so I'd say they ran all they way to 91'.
__________________
- Jeff

89' K5 Blazer, 2.5" lift, 35" tires
04' GMC Yukon XL, 3/4 ton, 8.1L
Ski-me is offline   Reply With Quote
Old 08-08-2017, 06:21 PM   #5
Irish1941
Registered User
 
Irish1941's Avatar
 
Join Date: Nov 2012
Location: Los Angeles, CA
Posts: 237
Re: Whats this switch

Quote:
Originally Posted by buffydores View Post
Seat belt release. They were like that through like '87 I think.
This..but they ran all way thru '90. Some '91 didn't have them as GM switched seat belt suppliers. I have a nos set without the button.

They work when you open the door, the belt retracts. Button pushes a tab and spring tension releases, winding up the belt. Pretty simple. The lock is different from the release. A hanging weight, looks like a fishing weight, works on gravity to lock up.
9 times out of 10 its just dirt inside that stops them from working. Sometimes the clock spring is broken. I have pix of them all blown apart if you need.
I have many a day into fixing Blazer/Jimmy belts.

A little fun fact...the passenger belt can be swapped with drivers side. Just flop the reels from the retractors behind the plastic cover. Figured that out trying fix a frayed driver side.
These are a life saving parts so don't fool with them unless you are 120% confident in your skills.
Irish1941 is offline   Reply With Quote
Old 08-09-2017, 08:20 AM   #6
ADub
Registered User
 
Join Date: Dec 2010
Location: Houston, TX
Posts: 217
Re: Whats this switch

Quote:
Originally Posted by Irish1941 View Post
This..but they ran all way thru '90. Some '91 didn't have them as GM switched seat belt suppliers. I have a nos set without the button.

They work when you open the door, the belt retracts. Button pushes a tab and spring tension releases, winding up the belt. Pretty simple. The lock is different from the release. A hanging weight, looks like a fishing weight, works on gravity to lock up.
9 times out of 10 its just dirt inside that stops them from working. Sometimes the clock spring is broken. I have pix of them all blown apart if you need.
I have many a day into fixing Blazer/Jimmy belts.

A little fun fact...the passenger belt can be swapped with drivers side. Just flop the reels from the retractors behind the plastic cover. Figured that out trying fix a frayed driver side.
These are a life saving parts so don't fool with them unless you are 120% confident in your skills.
I meant my truck is disassembled, not the belts. The belts worked fine before I took it apart and it had no release. Will the factory belts work without the release or does this mean someone has changed out my belts?
__________________
69 C10 SWB LY6 T56
70 Chevelle SS 396 4spd
ADub is offline   Reply With Quote
Old 08-09-2017, 11:45 AM   #7
Irish1941
Registered User
 
Irish1941's Avatar
 
Join Date: Nov 2012
Location: Los Angeles, CA
Posts: 237
Re: Whats this switch

You say they worked before you took the truck apart, then they will work after, right?
Belts retracted when you unclipped it from the female end?
Maybe somebody put earlier '76-'77 belts in it.
Pull the belt all the way out to where you see the tag. Tell me the part number on that tag and I'll tell you what yr those belts are.
78-90/91 belts all had plunger and yes it needs to be there to work properly.
Irish1941 is offline   Reply With Quote
Old 08-09-2017, 11:50 AM   #8
ADub
Registered User
 
Join Date: Dec 2010
Location: Houston, TX
Posts: 217
Re: Whats this switch

Thanks for the help. I havent put the truck back together yet. Its been apart for a while. I just noticed that I had a hole in door jam and nothing to go back in the hole, so I started searching for parts. I will test it all out once I get it back together. Hopefully soon, but prob not!
__________________
69 C10 SWB LY6 T56
70 Chevelle SS 396 4spd
ADub is offline   Reply With Quote
Old 08-09-2017, 12:18 PM   #9
Irish1941
Registered User
 
Irish1941's Avatar
 
Join Date: Nov 2012
Location: Los Angeles, CA
Posts: 237
Re: Whats this switch

Hope it helped! Owned/parted out over 40 Blazers over the yrs.
I had to think about for a second but they couldn't be 76-77 belts.
They used a different set up for belts because of the floor pan in the rear.
'78 was first yr for the new footwell rear floor & flip/fold rear seat. The belts moved completely to the b pillar where 76-77 had a mount on the floor behind the front seat.
Irish1941 is offline   Reply With Quote
Old 08-11-2017, 09:07 PM   #10
Fishermen0105
Registered User
 
Join Date: Jul 2016
Location: Central Texas
Posts: 13
Re: Whats this switch

Does anyone sell these new?
Fishermen0105 is offline   Reply With Quote
Old 08-22-2017, 09:17 AM   #11
motornut
78K & 79C Jimmys
 
motornut's Avatar
 
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,891
Re: Whats this switch

I've seen those out of alignment and it will rub on side, make sure the pin is centered, over spray can make it rub, I'd clean them and you might find debris inside
__________________
John http://www.youtube.com/user/TheMotornut
1978 Suburban4X2-hit while parked RIPzez
1978 GMCJimmy4X4-350/203http://67-72chevytrucks.com/vboard/s...=421767&page=4
1979 GMCJimmy4X2-305/350http://67-72chevytrucks.com/vboard/s...=1#post5200107
1987 Suburban4X4-writeoff hit while parked RIPzez
1988 Suburban4X4-writeoff hit while parked RIPzez
1989 Suburban4X2 - square igloo/SOLD
2002 Fleetwood
2005 Malibu hit by City bus,2nd time a write-off(01/15/16)
2010 Dodge Van-writeoff hit while parked(01/14/15)

Now I just buy shorter trucks!
Love em low,but get me higher
motornut is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 08:06 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 1997-2013 67-72chevytrucks.com