INTERMITTENT PASS KEY FAULT START NO START

Asked by May 08, 2015 at 03:06 PM about the 1993 Cadillac Fleetwood Base Sedan

Question type: Maintenance & Repair

NO CRANK PASS KEY FAULT LIGHT ON .FOLLOW RESET PROCEDURE CRANKS STARTS.TURN OFF PASS KEY FAULT LIGHT COMES ON NO CRANK AGAIN.

3 Answers

67,465

This is a common problem with GMs VATS (Vehicle Anti Theft System). The cause is usually the ignition lock cylinder. The chip on your ignition key shank is a resistor block that contacts 2 tiny wires inside the lock cylinder when the key is inserted. There were 15 chip possibilities. Over time these tiny wires wear and break. When this happens the chip no longer contacts the wires and the computer can't read the key. This enables the anti theft system and shuts down the car. When you replace the lock cylinder you'll get a template for cutting new ignition keys BUT you must have the original key tested to find out which VATS number key you have (1 thru 15). Then you have to get the correct VATS key blank so that the computer will recognize it. Then use the template that came with the new lock cylinder to have the VATS key blank cut to be able to turn on the ignition and start the car. HTH. -Jim

2 of 2 people found this helpful.
35

This was my situation until it failed entirely. The key/cylinder combination were fine, but it was the control unit that went bad (in the trunk). I also learned that you ccanotnbuy a used control unit, either. When the new one is installed, a process runs which mates it to your key, the first time the car is started.

3 of 3 people found this helpful.
10

Any update

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

Fleetwood

Looking for a Used Fleetwood in your area?

CarGurus has 105 nationwide Fleetwood listings and the tools to find you a great deal.

ZIP:

Search Cadillac Fleetwood Questions

Cadillac Fleetwood Experts

#1 Rowefast
Rowefast
Reputation 640
#2 Js08016
Js08016
Reputation 130
#3 chassy
chassy
Reputation 120
View All

Related Models For Sale

Used Cadillac DeVille
4 Great Deals out of 1,626 listings starting at $1,988
Used Cadillac Eldorado
349 listings starting at $2,450
Used Lincoln Town Car
34 Great Deals out of 1,791 listings starting at $1,500
Used Cadillac Seville
3 Great Deals out of 330 listings starting at $1,100
Used Chevrolet Impala
589 Great Deals out of 34,066 listings starting at $899
Used Chevrolet Caprice
151 listings starting at $10,900
Used Lincoln Continental
6 Great Deals out of 5,051 listings starting at $37,988
Used Ford Mustang
543 Great Deals out of 45,840 listings starting at $1,999
Used Chevrolet Camaro
244 Great Deals out of 31,183 listings starting at $369
Used Chevrolet Corvette
149 Great Deals out of 20,682 listings starting at $3,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.