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04-11-2017, 07:50 AM
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#1 |
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Registered User
Join Date: May 2012
Location: MacDill AFB\Tampa
Posts: 151
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1984 C10 4 pin brake switch question
A few questions:
What is the purpose of the 4 pin brake switch in my truck that does not have cruise control. I have a 4l80e installed, can I reuse the 4 pin switch to lock up my torque converter.
__________________
Science flies you to the moon; Religion flies you into buildings. LeMans Turbo build http://ls1tech.com/forums/forced-ind...rbo-build.html C10 build (twin-turbo) http://www.performancetrucks.net/for...didate-501987/ |
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04-11-2017, 08:12 AM
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#2 |
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Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: 1984 C10 4 pin brake switch question
'84 would have had a lock up torque converter (provided it had an automatic transmission).
One set of contacts will be Normally Open and the other Normally Closed.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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04-11-2017, 08:47 AM
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#3 | |
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Registered User
Join Date: May 2012
Location: MacDill AFB\Tampa
Posts: 151
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Re: 1984 C10 4 pin brake switch question
Quote:
__________________
Science flies you to the moon; Religion flies you into buildings. LeMans Turbo build http://ls1tech.com/forums/forced-ind...rbo-build.html C10 build (twin-turbo) http://www.performancetrucks.net/for...didate-501987/ |
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04-11-2017, 08:43 PM
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#4 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: 1984 C10 4 pin brake switch question
It doesn't, but the 700r4 did. My guess is they had run a single part # for the brake switch and just didn't wire it if it wasn't needed in that configuration. My guess is the manual trucks have the same brake switch. Yes you can reuse it, just make sure that its normally open/closed configuration matches what the 80e wants, otherwise you'll be trying to lock/unlock at the wrong command.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING  |
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04-12-2017, 08:47 AM
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#5 |
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Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 1984 C10 4 pin brake switch question
They made 350 turbos with lock up converters in the 80"s.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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04-12-2017, 09:03 AM
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#6 |
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Registered User
Join Date: Dec 2009
Location: Brooklyn N.Y.
Posts: 819
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Re: 1984 C10 4 pin brake switch question
It could also be for the cruise control system if it had that option.
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1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! *pic in my profile* 1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig. http://67-72chevytrucks.com/gallery/...=74049&cat=500 |
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04-12-2017, 12:03 PM
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#7 | |
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Registered User
Join Date: May 2012
Location: MacDill AFB\Tampa
Posts: 151
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Re: 1984 C10 4 pin brake switch question
Quote:
BR3, how will I know for certain whether it is in sync with my needs or not? Do different model 4l80e's have varying requirements from their switches? I hav a copy of HPtuners and the box, can I use that to determine whether or not the TC is locking up and unlocking when the brake is depressed?
__________________
Science flies you to the moon; Religion flies you into buildings. LeMans Turbo build http://ls1tech.com/forums/forced-ind...rbo-build.html C10 build (twin-turbo) http://www.performancetrucks.net/for...didate-501987/ |
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04-12-2017, 09:53 PM
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#8 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: 1984 C10 4 pin brake switch question
4l80e needs 0v on the switch when the brakes are applied. Some switches work the opposite. Just throw a meter on it. If you have the wrong one, I have the correct part listed in my build (pic and part #), a few pages in.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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04-12-2017, 10:06 PM
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#9 | |
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Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: 1984 C10 4 pin brake switch question
Quote:
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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04-13-2017, 09:01 AM
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#10 | |
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Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: 1984 C10 4 pin brake switch question
Quote:
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53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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04-13-2017, 07:33 PM
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#11 | |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: 1984 C10 4 pin brake switch question
Quote:
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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04-14-2017, 09:30 AM
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#12 |
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Registered User
Join Date: May 2012
Location: MacDill AFB\Tampa
Posts: 151
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Re: 1984 C10 4 pin brake switch question
Al always much appreciated.
__________________
Science flies you to the moon; Religion flies you into buildings. LeMans Turbo build http://ls1tech.com/forums/forced-ind...rbo-build.html C10 build (twin-turbo) http://www.performancetrucks.net/for...didate-501987/ |
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