1980 C10 Cruise Control Switch 407437

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

EdJr

Junior Member
Joined
Dec 8, 2021
Posts
17
Reaction score
24
Location
27511
First Name
Ken
Truck Year
1980
Truck Model
C10 Big Ten
Engine Size
350/THM350/3:08Posi
Hello all, I have found this site very informative and through the discussions I have been able to resurect my 1980 C10 thats been in my family since new. I am trying to get the cruise control back online and i have the black cruise control vacuum release switch GM #407437. Does anyone have one of these needles in a haystack? Its definately bad and needs to be replaced. Any help would be greatly appreciated.
 

EdJr

Junior Member
Joined
Dec 8, 2021
Posts
17
Reaction score
24
Location
27511
First Name
Ken
Truck Year
1980
Truck Model
C10 Big Ten
Engine Size
350/THM350/3:08Posi
I saw the NOS one, I’ve searched for several hours today. The price is so high but he knows what he’s got and I don’t blame him. If you think you may have a good used one and get under your dash I would be interested in buying it.
 

Mr Clean

Super Moderator
Staff member
Super Moderator
Joined
Aug 18, 2010
Posts
9,887
Reaction score
8,619
Location
North East Texas
First Name
Shawn
Truck Year
1982 & 1985
Truck Model
K10 Extra Cab w/ Proper SWB, & 85 K5 Blazer
Engine Size
454 BBC, & 383 Stroker
:welcome:
 

EdJr

Junior Member
Joined
Dec 8, 2021
Posts
17
Reaction score
24
Location
27511
First Name
Ken
Truck Year
1980
Truck Model
C10 Big Ten
Engine Size
350/THM350/3:08Posi
Thanks, brother.
 

EdJr

Junior Member
Joined
Dec 8, 2021
Posts
17
Reaction score
24
Location
27511
First Name
Ken
Truck Year
1980
Truck Model
C10 Big Ten
Engine Size
350/THM350/3:08Posi

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,276
Reaction score
5,236
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
I bit the bullet and bought the NOS switch. Aside from crawling through a junkyard to search for a vehicle with one in it, it is a good option. Thanks for the reply.
If it doesn't work out, send me a private message and I can probably send you the one off my truck. I'll most likely be pulling it all out in the next few months.
 

EdJr

Junior Member
Joined
Dec 8, 2021
Posts
17
Reaction score
24
Location
27511
First Name
Ken
Truck Year
1980
Truck Model
C10 Big Ten
Engine Size
350/THM350/3:08Posi
If it doesn't work out, send me a private message and I can probably send you the one off my truck. I'll most likely be pulling it all out in the next few months.
Tell you what, when you pull it out let me know, I’ll take it also, they go bad and are rare.
 

EdJr

Junior Member
Joined
Dec 8, 2021
Posts
17
Reaction score
24
Location
27511
First Name
Ken
Truck Year
1980
Truck Model
C10 Big Ten
Engine Size
350/THM350/3:08Posi
To anyone interested, I have found a way to repair the 407437 Vacuum Release floor switch. You can roll the plastic bead back around the metal end catch, I used needle nose pliers to squeeze it flat and with a very narrow blade, the metal disc will pop out. There is a recessed groove that the disc pops in to and the bead holds it in place. The o-ring on the shaft is a standard size 004 buna-n oring. Lube the new one, stretch it over the end put it all back together and gently heat something to roll the plastic back over or epoxy it. I've now repaired two of them, the original and a NOS unit, and they work perfectly.
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,276
Reaction score
5,236
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
To anyone interested, I have found a way to repair the 407437 Vacuum Release floor switch. You can roll the plastic bead back around the metal end catch, I used needle nose pliers to squeeze it flat and with a very narrow blade, the metal disc will pop out. There is a recessed groove that the disc pops in to and the bead holds it in place. The o-ring on the shaft is a standard size 004 buna-n oring. Lube the new one, stretch it over the end put it all back together and gently heat something to roll the plastic back over or epoxy it. I've now repaired two of them, the original and a NOS unit, and they work perfectly.
Make sure you are lubing with a silicone grease. Anything petroleum based will likely degrade the oring over time and cause it to harden and crack eventually.
 

EdJr

Junior Member
Joined
Dec 8, 2021
Posts
17
Reaction score
24
Location
27511
First Name
Ken
Truck Year
1980
Truck Model
C10 Big Ten
Engine Size
350/THM350/3:08Posi
I did, don’t want it to happen again any time soon.
 

Latest posts

Forum statistics

Threads
42,570
Posts
918,530
Members
34,110
Latest member
mundo
Top