Is the NSS wire absolutely necessary - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Tilt · 06-08-2015, 02:11 PM

Buttoning up some loose ends and was wondering if this wire is necessary for the engine to run. Motor/computer are 2004 LQ9 dbw, trans is a 2005 4L80, harness is a BP Automotive Premium harness, and the truck is an '86. The switch on the bottom of the column only has the plug for the back up lights. The truck was originally a 3 speed on the column, so I believe it had a switch on the clutch pedal that only allowed it to start if the pedal was pressed down.

BR3W CITY · 06-08-2015, 08:01 PM

I don't have an NSS at all. I think my shifter has one, but I never bothered to hook it up (but I'm on auto). On a manual, its a good idea just for idiot proofing...but its not physically required for the truck to start (boats don't have NSS for example)

ls1nova71 · 06-08-2015, 08:42 PM

Ever seen somebody reach in the window and start their car while its in gear? I have, and its not pretty...... That said,, some columns have a physical lock out in any gear but neural and park, meaning they wont turn to the crank position in drive, I was thinking an 86 would be that way.See if it will turn in gear, if not you shouldnt need it.

Tilt · 06-09-2015, 06:05 AM

Thanks guys, I'll check it when I get home this evening.

06-08-2015, 02:11 PM	#1
Tilt Registered User Join Date: Jul 2014 Location: Dayton, TX Posts: 335	Is the NSS wire absolutely necessary Buttoning up some loose ends and was wondering if this wire is necessary for the engine to run. Motor/computer are 2004 LQ9 dbw, trans is a 2005 4L80, harness is a BP Automotive Premium harness, and the truck is an '86. The switch on the bottom of the column only has the plug for the back up lights. The truck was originally a 3 speed on the column, so I believe it had a switch on the clutch pedal that only allowed it to start if the pedal was pressed down. __________________ '83 Silverado Step Side '85 GMC short bed. '86 Chevy Step Side Custom Deluxe LQ9/4L80 swap (SOLD)

06-08-2015, 08:01 PM	#2
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Is the NSS wire absolutely necessary I don't have an NSS at all. I think my shifter has one, but I never bothered to hook it up (but I'm on auto). On a manual, its a good idea just for idiot proofing...but its not physically required for the truck to start (boats don't have NSS for example) __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

06-08-2015, 08:42 PM	#3
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,119	Re: Is the NSS wire absolutely necessary Ever seen somebody reach in the window and start their car while its in gear? I have, and its not pretty...... That said,, some columns have a physical lock out in any gear but neural and park, meaning they wont turn to the crank position in drive, I was thinking an 86 would be that way.See if it will turn in gear, if not you shouldnt need it. __________________ 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

06-09-2015, 06:05 AM	#4
Tilt Registered User Join Date: Jul 2014 Location: Dayton, TX Posts: 335	Re: Is the NSS wire absolutely necessary Thanks guys, I'll check it when I get home this evening. __________________ '83 Silverado Step Side '85 GMC short bed. '86 Chevy Step Side Custom Deluxe LQ9/4L80 swap (SOLD)

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