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Topic: Transmission Park switch

in Forum: C3 Electrical


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Transmission Park switch

Posted: 3/29/06 7:36am Message 1 of 8
gellisvette
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PERRYSBURG, OH - USA
Joined: 4/23/2004
Posts: 317
Vette(s): 1975 T-Tops,Lite Custom work,Many engine mod. 700R4 trans. body is shaved,17" wheels bf goodrich g-force tires,heavy sway bars front&rear rack&pinion steering,550 slolom springs with gas shocks.
 Anybody out there know how to adjust the park switch on there vette. I have to really slam mine into park and sometimes push on the shift lever in order to start my car. I'm sure there must be some sort of cantact point or something. Any help would be great. Oh this is a automatic we'r talking about. Thanks in add vance.


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Transmission Park switch

Posted: 3/29/06 12:29pm Message 2 of 8
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kstyer
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CUYAHOGA FALLS, OH - USA
Joined: 12/2/2003
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Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

George this may not be the park switch per say.

The cable between the shifter and automatic may be out of adjustment, or the cable between the trans and the base of the steering column.  If either of these are off, the shifter won't move properly and it will give you the same problem.

You and disconnect the cables one at a time and try the shifter and starting to help isolate the problem.  Start with the one under the hood at the base of the column.  It's just a snap clip.




Transmission Park switch

Posted: 3/29/06 6:07pm Message 3 of 8
gellisvette
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PERRYSBURG, OH - USA
Joined: 4/23/2004
Posts: 317
Vette(s): 1975 T-Tops,Lite Custom work,Many engine mod. 700R4 trans. body is shaved,17" wheels bf goodrich g-force tires,heavy sway bars front&rear rack&pinion steering,550 slolom springs with gas shocks.
Thanks Ken I will give it a try.


Transmission Park switch

Posted: 3/29/06 6:25pm Message 4 of 8
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Adams' Apple
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Sounds like a shifter cable adjustment if you have to "slam" it into park. The cable may also be damaged on the end that goes to the shift lever on the trans. They can bend there. Also, make sure the cable is good & tight in the bracket, and the bracket is tight where it bolts to the trans pan.
If all is well with the cable/bracket, then the switch may be the problem. It is mounted on the shifter itself, inside the car. You need to take the console plate off, and then you can get to the switch. I have seen some switches get "welded" on the inside, and cause problems such as this.
My bet is on a cable problem.


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Transmission Park switch

Posted: 3/29/06 11:27pm Message 5 of 8
Gale Banks 80
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Vette(s): 1980 with a Banks Twin Turbo 1969 Convert Big Block 1996 Grand Sport Convert
 The Switch is located in the Shifter itself so the Cable has nothing to do with it. Will it start in Neutral ?? Sounds to me Your going to need a new Switch as I don't think there is any Ajustment. I just did a Body Off and Converted to a Tremec 5 Speed and spent a Day tracing wires to find out why Mine wouldn't Start. I still have the Auto Shifter Wired up but it was laying on the Floor Backwards and when I thought it was in Park it was in 1st. If You want I could send You the Switch I'm just going to Throw it away anyway. Mine is a 1980 I don't know if its the same or not. Richard.


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Transmission Park switch

Posted: 3/30/06 6:12am Message 6 of 8
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Redwingvette
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Waterford, MI - USA
Joined: 9/13/2002
Posts: 1754
Vette(s): 1973 Red coupe
I had to take mine apart and clean the contacts. There is a little room for adjusting on my 73. The mounting holes are slotted.


Brian - NCM Lifetime Member

73 coupe L48, Flat-top pistons, Performer RPM Heads, Crane Cam and roller rockers, Holley 650 vac sec. Performer intake,
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Transmission Park switch

Posted: 3/30/06 1:44pm Message 7 of 8
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kstyer
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CUYAHOGA FALLS, OH - USA
Joined: 12/2/2003
Posts: 6424
Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

The switch is on the shifter, but the cable has a LOT to do with it.  When the cable is hanging up, the shifter won't move all the way to park, so the switch does not get triggered.

kstyer38806.5727083333


Transmission Park switch

Posted: 3/31/06 1:33pm Message 8 of 8
gellisvette
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PERRYSBURG, OH - USA
Joined: 4/23/2004
Posts: 317
Vette(s): 1975 T-Tops,Lite Custom work,Many engine mod. 700R4 trans. body is shaved,17" wheels bf goodrich g-force tires,heavy sway bars front&rear rack&pinion steering,550 slolom springs with gas shocks.

I'm going to try the cleaning methad first. But Richard don't through your switch a way just yet I may still need it. Super thanks to all replys.




in Forum: C3 Electrical


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