VSS (Vehicle Speed Sensor) - ZR-1 Net Registry Forums

Hammer · 10-24-2009

Is this the VSS that people are talking about on the listserver? It goes in the side of the transmission. Sounds like it's a part that should go in the box of spares. NLA from GM or Delco. Marc says they can leak or just not work.

tomtom72 · 10-24-2009

That looks different than the one my 90 has. I didn't notice the mounting brkt(?) on mine, or maybe I just can't see, or maybe I was looking at what I thought was my VSS and it wasn't the VSS.

Mine, if I was actually looking at my VSS

, looks like a small can with a female plug. I know the ones for the 90's have been NLA for a long time.

10-26-2009

Yes, and some folks bought out the entire stock that was left on Rock Auto after that email went out a few days ago.

bdw18_123 · 10-26-2009

Are the ZF6 VSS's different from the automatic ones? Cus my ZF6 VSS in the '93 I had looked different. Was bigger and had a green gear on the end that the transmission drives. Got one brand new from Autozone a year or so ago, had no problems getting it. Don't remember the brand.

10-26-2009

Quote:

Originally Posted by bdw18_123

Are the ZF6 VSS's different from the automatic ones? Cus my ZF6 VSS in the '93 I had looked different. Was bigger and had a green gear on the end that the transmission drives. Got one brand new from Autozone a year or so ago, had no problems getting it. Don't remember the brand.

It looks like this is only an issue with the 90 ZR-1s according to this email and the ZR-1 parts listing. I hope someone will chime in that knows if we don't need this specific part number and why:

> -----Original Message-----
> From: Brent Craig <blcraig@EARTHLINK.NET>
> Date: Sat, 24 Oct 2009 10:53:38
> To: <ZR1NET@LISTSERV.CORVETTEMUSEUM.COM>
> Subject: Re: [ZR1] TECH: VSS
>
> I just had the same problem with my VSS going bad. After an
> exhaustive search, I found what could be the last lot of aftermarket
> direct replacements. Since this is also a discontinued part, the
> manufacture took down all application information (which parts sellers
> use). I accidently stumbled upon an old website with the application
> info; even after calling tech support at the manufacturer, it took
> them a lot of time to find the information in their archives, but the
> finally were able to confirm their part number as a direct
> replacement. So, here is the scoop (don't know how many they still
> have in stock, but I predict they will be wiped out after I hit the
> "send" key on this email:
>
> Application: '89-'90 with build sheet spec code "D9B"
> Original GM p/n: 25007308 (discontinued)
> AC Delco p/n: 213-223 (also discontinued)
> Standard Motor Products p/n: SC8
> Where avail: rockauto.com (still avail. as of 1 week ago. note - just
> type in this p/n as you won't find it in their application finder
> program)
>
> Now, here is the best part:
>
> Price: $33.99 ("wholesaler close-out)
>
> Perfect fit & function, and it even is visually identical (black
> housing vs. white for the later model year's sensor) for anybody who
> is anal about these things (like me).
>
> P.S. I already bought myself enuf extras to last my lifetime, so let
> the parts hoarding feeding frenzy begin...........
>
> Brent
> '90 Red/Red
> Member # #149

GOLDCYLON · 10-26-2009

Anybody think of calling Bill the ZFDoc. Im sure he know what one looks like.

bdw18_123 · 10-26-2009

The device pictured at the top is definitely not a VSS. I just looked at the one on my '90 Z, looks nothing like that. Looks the same as the one in my '93 I used to have. This is what the VSS looks like for the ZR-1's and the standard coupes with the ZF6, picture taken from kragen.com & does not show the gear that goes on the shaft (I don't know if the automatics are the same or not):

Apparently there are 2 different types of VSS, D9A & D9B (I also saw a D9E listed on Autozone.com, but it was listed as unavailable). I think the codes denote the number of teeth on the gear that goes on the sensor. One of those codes will be listed in the RPO code list under your console lid. My '90 Z has D9B. You can get a D9A from autozone, kragen has D9A's and D9B's. They aren't cheap though.

10-26-2009

Quote:

Originally Posted by bdw18_123

The device pictured at the top is definitely not a VSS. I just looked at the one on my '90 Z, looks nothing like that. Looks the same as the one in my '93 I used to have. This is what the VSS looks like for the ZR-1's and the standard coupes with the ZF6, picture taken from kragen.com & does not show the gear that goes on the shaft (I don't know if the automatics are the same or not):

Apparently there are 2 different types of VSS, D9A & D9B (I also saw a D9E listed on Autozone.com, but it was listed as unavailable). I think the codes denote the number of teeth on the gear that goes on the sensor. One of those codes will be listed in the RPO code list under your console lid. My '90 Z has D9B. You can get a D9A from autozone, kragen has D9A's and D9B's. They aren't cheap though.

Thanks for the research and sharing. Good to know they are at least available and I'm glad I bought mine from Rock Auto before they were all bought out; I guess those were wholesale prices they had.

Pete · 10-26-2009

Quote:

Originally Posted by Hammer

Is this the VSS that people are talking about on the listserver? It goes in the side of the transmission. Sounds like it's a part that should go in the box of spares. NLA from GM or Delco. Marc says they can leak or just not work.

This looks like a crank sensor,not a VSS.
If it is a VSS it looks like a 4L80E trans speed sensor.

Pete

limey · 10-26-2009

Not sure where all this miss information comes from sometimes, but the VSS for the 1990 is available. If by some miracle, all GM dealers are now sold out, just pop into your local advance auto parts store and order part # S8048 which is the same part VSS

The correct part GM # is 25007224

Part number that is been referenced here as 25007308 is discontinued as is different in the fact it contains the VSS AND the gear, whereas part # 25007224 contains ONLY the VSS and NOT the plastic drive gear.

Just order part # 25007224 and switch out your old plastic drive gear when removing.

The 91-95 cars are different connectors and are less than half price of the 1990

10-24-2009	#2
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,645	Re: VSS (Vehicle Speed Sensor) That looks different than the one my 90 has. I didn't notice the mounting brkt(?) on mine, or maybe I just can't see, or maybe I was looking at what I thought was my VSS and it wasn't the VSS. Mine, if I was actually looking at my VSS, looks like a small can with a female plug. I know the ones for the 90's have been NLA for a long time. __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

10-26-2009	#3
HAWAIIZR-1 Guest Posts: n/a	Re: VSS (Vehicle Speed Sensor) Yes, and some folks bought out the entire stock that was left on Rock Auto after that email went out a few days ago.

10-26-2009	#4
bdw18_123 Join Date: Apr 2009 Location: Prather, CA Posts: 809	Re: VSS (Vehicle Speed Sensor) Are the ZF6 VSS's different from the automatic ones? Cus my ZF6 VSS in the '93 I had looked different. Was bigger and had a green gear on the end that the transmission drives. Got one brand new from Autozone a year or so ago, had no problems getting it. Don't remember the brand. __________________ [IMG]http://i13.photobucket.com/albums/a292/bdw18_123/_zr1netforumsigphoto.jpg[/IMG][B] 1990 Corvette ZR-1 [/B][I] White/Flame Red, #2299, mostly stock, 144K miles.[/I] -Cams timed to the '93-'95 405HP LT5 stock timing. -IAT sensor relocated to below front bumper. -Haibeck hoops installed in airduct. -OBX cat-back exhaust. [COLOR=DarkRed][B](SOLD - December 2012 [/B][/COLOR][COLOR=DarkRed][B]:hello:)[/B][/COLOR] 1993 Corvette Coupe Black/Black, 6-speed (SOLD - October 2009 :hello:)

10-26-2009	#6
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,155	Re: VSS (Vehicle Speed Sensor) Anybody think of calling Bill the ZFDoc. Im sure he know what one looks like. __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

10-26-2009	#7
bdw18_123 Join Date: Apr 2009 Location: Prather, CA Posts: 809	Re: VSS (Vehicle Speed Sensor) The device pictured at the top is definitely not a VSS. I just looked at the one on my '90 Z, looks nothing like that. Looks the same as the one in my '93 I used to have. This is what the VSS looks like for the ZR-1's and the standard coupes with the ZF6, picture taken from kragen.com & does not show the gear that goes on the shaft (I don't know if the automatics are the same or not): Apparently there are 2 different types of VSS, D9A & D9B (I also saw a D9E listed on Autozone.com, but it was listed as unavailable). I think the codes denote the number of teeth on the gear that goes on the sensor. One of those codes will be listed in the RPO code list under your console lid. My '90 Z has D9B. You can get a D9A from autozone, kragen has D9A's and D9B's. They aren't cheap though. __________________ [IMG]http://i13.photobucket.com/albums/a292/bdw18_123/_zr1netforumsigphoto.jpg[/IMG][B] 1990 Corvette ZR-1 [/B][I] White/Flame Red, #2299, mostly stock, 144K miles.[/I] -Cams timed to the '93-'95 405HP LT5 stock timing. -IAT sensor relocated to below front bumper. -Haibeck hoops installed in airduct. -OBX cat-back exhaust. [COLOR=DarkRed][B](SOLD - December 2012 [/B][/COLOR][COLOR=DarkRed][B]:hello:)[/B][/COLOR] 1993 Corvette Coupe Black/Black, 6-speed (SOLD - October 2009 :hello:) Last edited by bdw18_123; 10-26-2009 at 03:38 AM.

10-24-2009	#1
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	VSS (Vehicle Speed Sensor) Is this the VSS that people are talking about on the listserver? It goes in the side of the transmission. Sounds like it's a part that should go in the box of spares. NLA from GM or Delco. Marc says they can leak or just not work. __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]

10-26-2009	#10
limey Join Date: Oct 2008 Location: tampa Posts: 538	Re: VSS (Vehicle Speed Sensor) Not sure where all this miss information comes from sometimes, but the VSS for the 1990 is available. If by some miracle, all GM dealers are now sold out, just pop into your local advance auto parts store and order part # S8048 which is the same part VSS The correct part GM # is 25007224 Part number that is been referenced here as 25007308 is discontinued as is different in the fact it contains the VSS AND the gear, whereas part # 25007224 contains ONLY the VSS and NOT the plastic drive gear. Just order part # 25007224 and switch out your old plastic drive gear when removing. The 91-95 cars are different connectors and are less than half price of the 1990