Ecm reprogram

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Jul 7, 2022 | 04:58 PM

Mike Clouston

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Ecm reprogram

I want to get my ecm reprogrammed in my 86 corvette without the vats in it can anyone recommend a place that does this thanks

Jul 13, 2022 | 12:21 PM

vett383

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im pretty sure the VATS are in the CCM, least in mine which is a 1990 it is

Jul 13, 2022 | 12:58 PM

Scott Rasmussen

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From: Omaha, Nebraska

VATS is in the CCM, why not just do the VATS bypass?

Jul 13, 2022 | 04:51 PM

Kevova

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From: near the thumb in the mitten

86 does not use CCM that's 90-96. It uses a vats module. Vats disable is commonly done by soldering in resistor equal to key values in key reader circuit.
It could be done with a new prom and some rewiring bypassing starter enable relay.

Jul 13, 2022 | 08:54 PM

dieselgeek

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From: CNY

http://tunedperformance.wordpress.com

Dec 9, 2022 | 01:04 PM

Roger Fairchild

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Quote:

Originally Posted by Scott Rasmussen

VATS is in the CCM, why not just do the VATS bypass?

I did a code 4 bypass off the steering column and the same problem exists. Sometimes it starts, when it doesn't, u have to an hr before it starts.

Dec 9, 2022 | 01:17 PM

Tom400CFI

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From: Park City Utah

Quote:

Originally Posted by Scott Rasmussen

VATS is in the CCM, why not just do the VATS bypass?

Quote:

Originally Posted by Kevova

^These guys are right. No CCM in '86.

What does the security indicator on the dash do, when it won't start, with the key in the "RUN"/on position?

Dec 10, 2022 | 05:10 AM

Ray Quayle

- 1986 Original Owner -

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Quote:

Originally Posted by Tom400CFI

^These guys are right. No CCM in '86.

What does the security indicator on the dash do, when it won't start, with the key in the "RUN"/on position?

And as there is no CCM, there is no connection between VATS and the security indicator. In ‘86-‘89, the security indicator is driven by the UTDS Module and only indicates the status of the Theft Deterrent System.

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Dec 10, 2022 | 09:40 AM

Tom400CFI

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From: Park City Utah

Are you saying that in an '86 car, the security light doesn't blink when you get in the car but don't insert the key?

Dec 10, 2022 | 01:54 PM

#10

Ray Quayle

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Quote:

Originally Posted by Tom400CFI

Are you saying that in an '86 car, the security light doesn't blink when you get in the car but don't insert the key?

No, what I’m saying is that SECURITY indicator is only connected to the UTDS on ‘86-‘89. It lights to indicate the status of the Theft Deterrent System. Blinking indicates that a door is opened and the Theft Deterrent System is not armed. Once armed SECURITY indicator lights solid. No connection to VATS until 1990 and the CCM. The UTDS and VATS module’s functions were incorporated into the CCM. As the CCM drives the SECURITY indicator, it could be used to indicate more than just the status of the alarm and could also indicate the status of VATS.

Dec 10, 2022 | 03:50 PM

#11

Tom400CFI

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From: Park City Utah

So on an '86, you get into the car, close the door, don't put the key in the ignition....and you got NO security light. Is that right?

That doesn't seem right....

Dec 10, 2022 | 05:19 PM

#12

johnfin

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85 security

What do 85 cars have for security?

Dec 11, 2022 | 03:07 AM

#13

Ray Quayle

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Quote:

Originally Posted by johnfin

What do 85 cars have for security?

Like the ‘86-‘89, but with no VATS. The difference is on the ‘84-‘85, the UTDS outputs not only to the horn, but to the starter relay. The SECURITY indicator works the same. When the alarm is active on 84-‘85, the horn beeps on and off 50 times a minute and the starter is disabled so the car won’t crank. On ‘86-‘89, when the alarm is active, the horn beeps on and off 50 times a minute, but if VATS is happy the car will start and you can drive down the road with the horn beeping on and off.

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