Installation guide

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1995 and newer Cavalier and Sunfire
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1996 and newer Achieva, Grand Am, and Skylark
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1997 and newer Intrigue, Malibu, and Cutlass
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1998 and newer trucks, vans, SUVs
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1999 and newer Alero
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2000 and newer Impala and Saturn
Passlock I and II systems are VATS-evolved. Passlock systems still rely on the R-code to start, but
the pellet is no longer placed in the key. The resistor can now be found in the key switch. This allows
for a greater number of possible R-codes. In addition, Passlock systems require “seeing” the correct
R-code at the correct time. To bypass Passlock I and II, p/n 555L or p/n 555T is required.
Passkey III (PK-3), Transponder-Based Systems
The Passkey III system can be found in the following vehicles:
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1997 and newer Park Avenue
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1998 and newer Cadillac
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1999 and newer U vans, Transport, Montana, and Silhouette
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2000 and newer Grand Prix, Lesabre, Monte Carlo, Lumina, Bonneville
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2001 and newer Aurora, Aztek and Rendezvous
Other transponder-based systems include: Acura, BMW, Dodge/Chrysler/Jeep, Ford, Honda,
Infinity, Mazda, Mercedes, Mitsubishi, Nissan, Toyota, Volkswagon, and Volvo.
PK-3 and the transponder-based systems use a transponder system that locks out the ignition and
fuel system. This transponder system is comprised of two parts. The first part, the transceiver, circles
the key switch and is activated when the key is placed in the key switch or turned to the run
position. Upon activation, the transceiver will excite the transponder, which is located (but not
visible) in the head of the ignition key. The key transponder will then send a unique code back to
the transceiver for evaluation. If the code matches a valid code of the system, the vehicle will be
allowed to start.
Most of these transponder-based systems can be bypassed using p/n 555U. Some may require
additional parts from the vehicle manufacturer. Consult you dealer for the applications. For most
Ford PATS transponders, as well as Lexus and Toyotas, p/n 555F can be used, except for the
following vehicles, which will require p/n 555U: ‘97 and newer Mark VII, and 2000 and newer
Taurus/Sable, Contour/Mystique and Focus.
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©
2001 Directed Electronics, Inc.