1985 corvette
Le Mans Master
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
Re: 1985 corvette (1985calcorvette)
Yes it has one.. I disabled mine like right after getting it, as it used to go off all the time..As I recall there is a relay or fuse or something behind the info panel on the dash.. I had to take that out and then I disabled the VATS.
Safety Car
Joined: Jul 2002
Posts: 4,548
Likes: 3
From: SCMR Rat Pack'r Charter Member, Inland Empire Chapter
Re: 1985 corvette (1985calcorvette)
There seems to be a divergent opinion here about it :confused: Anyway, Ill just say welcome to the forum :cheers:
:blueangel:
:blueangel:
Drifting
Joined: Oct 2001
Posts: 1,463
Likes: 0
From: Lancaster CA
Cruise-In III Veteran
Re: 1985 corvette (1985calcorvette)
My '85 has factory alarm, but no special coded keys or 'starter-disable' function. I believe horn sounds for approxiomately 3 minutes, & I'm not sure if it cuts out the fuel pump power or not, I'll check my owners manual and post back if no other posts address it.
One might call that a VATS...Vehicle Anti-Theft System....I know it is not the VATS as everyone knows it. Nobody pays any attention to the noisy car alarms any more, as they sound off so frequently... :cheers:
One might call that a VATS...Vehicle Anti-Theft System....I know it is not the VATS as everyone knows it. Nobody pays any attention to the noisy car alarms any more, as they sound off so frequently... :cheers:
Drifting
Joined: Nov 2001
Posts: 1,783
Likes: 2
From: Latham NY
Re: 1985 corvette (1985calcorvette)
It has a "Theft Deterent Module" or TDM. It is activated my using the power lock switch then closing the door. It is deactivated by using the key to unlock the door. To test it, roll down the driver window. Open the door, press the power lock button, and close the door. Reach in and slide the unlock lever then open the door. The horn should go off. Put key in door lock to stop it.
Melting Slicks
Joined: Nov 2000
Posts: 3,388
Likes: 1
From: X
Re: 1985 corvette (Blue85L98)
I am willing to bet you if my 84 has a starter interupt ...so does yours...its behind the multiuse panel (under the AC vents)
My '85 has factory alarm, but no special coded keys or 'starter-disable' function. I believe horn sounds for approxiomately 3 minutes, & I'm not sure if it cuts out the fuel pump power or not, I'll check my owners manual and post back if no other posts address it.
One might call that a VATS...Vehicle Anti-Theft System....I know it is not the VATS as everyone knows it. Nobody pays any attention to the noisy car alarms any more, as they sound off so frequently... :cheers:
One might call that a VATS...Vehicle Anti-Theft System....I know it is not the VATS as everyone knows it. Nobody pays any attention to the noisy car alarms any more, as they sound off so frequently... :cheers:
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Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,672
Likes: 0
From: BFE ca
Re: 1985 corvette (vader86)
well, my horn is disconnected so i cant check it that one way. Also my driver side door lock doesnt work so i open the passenger side with the key and press the unlock button to open the driver side door.... i asked in the first place because sometimes my car doesnt start and i have to disconnect then reconnect the battery
Melting Slicks
Joined: Nov 2000
Posts: 3,388
Likes: 1
From: X
Re: 1985 corvette (1985calcorvette)
If that is your problem, I would think it is the door arm switches or lock cylinder switches. Untill you get it fixed, so you do not get stranded someplace. I would disconnect the factory alarm. (under the pass hush pad) (don't disconnect the ECM that is right next to it) You can also remove the fuse behind the multiuse panel.
Drifting
Joined: Oct 2001
Posts: 1,463
Likes: 0
From: Lancaster CA
Cruise-In III Veteran
Re: 1985 corvette (JonM)
I stand corrected, as others have stated...THe 85 does indeed have the starter interupt.
To quote from the '85 owner's manual..."THEFT DETERRENT SYSTEM...The Electronic Theft Deterrent System has been designed to not only protect the passenger compartment contents, but to offer an extra degree of protection to the vehicle itself when the system is properly armed.
The system alarm pulsates the vehicle's horn at a rate of 50 cycles per minute. At the same time the alarm is triggered, the starter interupt relay is energized which disables the starter solenoid circuit.
In order to conserve the vehicle battery power, the horn shuts off after three to seven minutes of operation and re-arms. However, once triggered, the starter interupt relay will remain energized by the controller until the system has been properly disarmed."
Sorry about the inaccurate information from my first post.... :cheers:
To quote from the '85 owner's manual..."THEFT DETERRENT SYSTEM...The Electronic Theft Deterrent System has been designed to not only protect the passenger compartment contents, but to offer an extra degree of protection to the vehicle itself when the system is properly armed.
The system alarm pulsates the vehicle's horn at a rate of 50 cycles per minute. At the same time the alarm is triggered, the starter interupt relay is energized which disables the starter solenoid circuit.
In order to conserve the vehicle battery power, the horn shuts off after three to seven minutes of operation and re-arms. However, once triggered, the starter interupt relay will remain energized by the controller until the system has been properly disarmed."
Sorry about the inaccurate information from my first post.... :cheers:
Drifting
Joined: Jun 2001
Posts: 1,490
Likes: 17
From: Darlington, MD
Re: 1985 corvette (1985calcorvette)
No VATS on 85. I believe VATS started in 86. 85 does not recognize the key. I do believe it disables the starter when the alarm is activated, but it has nothing to do with the key. Guy
[Modified by 85vetteguy, 3:24 PM 9/24/2002]
[Modified by 85vetteguy, 3:24 PM 9/24/2002]
Race Director
Joined: Aug 2000
Posts: 11,506
Likes: 4
From: Vancouver,Wa.
Re: 1985 corvette (85vetteguy)
No VATS on 85. I believe VATS started in 86. 85 does not recognize the key. I do believe it disables the starter when the alarm is activated, but it has nothing to do with the key. Guy
[Modified by 85vetteguy, 3:24 PM 9/24/2002]
[Modified by 85vetteguy, 3:24 PM 9/24/2002]
Melting Slicks
Joined: Jun 2002
Posts: 2,168
Likes: 16
From: Phoenix AZ
Re: 1985 corvette (corvette0096)
'86 was first year for VATS. After replacing the key and cylinder, it is 100% reliable, too. I don't know why anyone would want to bypass a system like that which is still effective today and way ahead of its time in '86.
Intermediate
Joined: Aug 2002
Posts: 25
Likes: 0
From: Wichita KS
Re: 1985 corvette (1985calcorvette)
Nope, the '85 Vette doesn't have that, it started in '86. If you look at your key it does NOT have that little plastic back oval with the metal line going though it on the key. If I remember right, there are like 8 diferent codes so when you get a duplicate key made you have to match the code as well as the key. The alarm does disable the starter, until one of the door are unlocked with door key, but it has nothing to do with the engine key. :D
-Dave
-Dave
Race Director
Joined: Sep 2000
Posts: 12,182
Likes: 1
From: Partying with the Cowboys cheerleaders in Mt. Olive, New Jersey
Re: 1985 corvette (vetracer)
'86 was first year for VATS. After replacing the key and cylinder, it is 100% reliable, too. I don't know why anyone would want to bypass a system like that which is still effective today and way ahead of its time in '86.
Le Mans Master
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
Re: 1985 corvette (vetracer)
So they changed the naming convention from 84-85 to 86+ models. All that matters is that there IS a VATS (Vehicle Anti Theft system) no matter what it's called. Only difference is that the 86+ uses a special key, and pre 86 uses a different system with starter disable. It used to leave me in the dust a few times before I disabled it..
I had a lot better real alarm installed anyways after. :smash:
I had a lot better real alarm installed anyways after. :smash:
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Re: 1985 corvette (dj247046)
Nope, the '85 Vette doesn't have that, it started in '86. If you look at your key it does NOT have that little plastic back oval with the metal line going though it on the key. If I remember right, there are like 8 diferent codes so when you get a duplicate key made you have to match the code as well as the key. The alarm does disable the starter, until one of the door are unlocked with door key, but it has nothing to do with the engine key. :D
-Dave
-Dave
Burning Brakes
Joined: Jul 2002
Posts: 871
Likes: 0
From: Costa Mesa CA
Re: 1985 corvette (CentralCoaster)
I agree with CC (nice paint dude!). I had an '85 Z51. No official VATS (little black resistor in the key) but their is a factory alarm system.
BIG JIM
[Modified by BIG JIM 54, 11:51 AM 9/25/2002]
BIG JIM
[Modified by BIG JIM 54, 11:51 AM 9/25/2002]
Intermediate
Joined: Sep 2002
Posts: 42
Likes: 0
From: atlantic va
Re: 1985 corvette (BIG JIM 54)
while we're on that subject... has anybody bypassed the resistor in the key with a fixed value resistor in the steering harness to bypass that feature....it seems that if somebody wants to swipe my car, they're going to rip out the ignition lock anyway. i need to get a set of spare keys for wife unit but i'm not up to giving the dealer 50 bucks when i can do it for 65 cents. just a thought...
drive on dude!
drive on dude!