Chevrolet Silverado 1999 

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Wire/Function Colour Location / Descr iption Polar i ty  

Installation type: Remote start / security / GPS 

YES PASSLOCK II SEE NOTESPASS IVE ANTI-THEFT 

Red Ignition harness +12 VOLTS 

Pink Ignition harness +IGNITION 

White Ignition harness +IGNITION 2 

Orange Ignition harness +ACCESSORY 

Yellow Ignition harness +STARTER 

See notes*TACH 

Lt.blue At Body Control Module** +LOCK 

White At Body Control Module** +UNLOCK 

Tan & Lt.blue At Body Control Module** -DOORPIN 

See notes***FACTORY ARM 

Lt.green At Body Control Module** -FACTORY DISARM 

White At switch above brake pedal +BRAKESWITCH 

Lt.blue**** At light switch harness +PARKLIGHTS 

Lt.blue At switch on parking brake lever   -HAND BRAKE 

Black At steering column -HORN 

Purple/white At switch on top of clutch pedal TYPE 1CLUTCH SWITCH 

Dk.blue At window switch in driver's door   REV POLDRIVER WINDOW UP 

Brown At window switch in driver's door   REV POLDRIVER WINDOW DOWN 

Lt.blue At window switch in driver's door   REV POLPASSENGER WINDOW UP 

Tan At window switch in driver's door   REV POLPASSENGER WINDOW DOWN 

White At light switch harness +HEADLIGHTS 

Lt.green DKP harness to rear of vehicle +REVERSE LIGHTS 

Green At light switch harness +DIMMER 

Dk.green/white***** At VCM in left front engine compartment 4000ppmVSS WIRE 

Lt.green Ignition switch harness -KEY SENSE 

NOSHOW01 

PLEASE NOTE: This vehicle is equipped with GM's Passlock II passive fuel cut-off system. See the security diagram for bypass

information.

* The 4300 V6 engine still uses a single coil on the top of the engine, tach wire is WHITE. On the V8 engines, there is a coil for each

cylinder, each with a 4 pin plug. Each plug contains a BLACK, BROWN & PINK, as well as a 4th wire which changes color on each

coil. This 4th wire can be used as your tach reference, set your remote starter for a 1 cylinder signal. You can also use a WHITE at pin-

10 of the 80-pin connector on the PCM at the left front of the engine compartment for a 8 cylinder signal.

** The Body Control Module is located directly below the steering column. Factory security is only available on the LS & LT models.

*** The factory alarm can be armed by grounding the driver's doorpin TAN, while locking the doors.

**** TAN is driver's door & LT.BLUE is passenger side door.

***** Located at pin-3 on the C4 24-pin plug (4.3L only). Located at pin-50 of C2 80-pin connector for all other engines.

Vehicle note: 

Friday, August 09, 2002 Page 1 of 1  

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