Repair 7

The stylish Porsche cars come equipped with a remote entry system for controlling the door locks and alarm system. The system is controlled by a wireless transmitter in the Porsche key fob. This device has three buttons: lock, unlock and a panic alarm button. Before you can use the key fob with your car you must program it to work. Most keyless transmitters come already programmed from the Porsche dealership, but you can also reprogram it yourself using the ignition key and the security code.

Instructions

1

Enter the Porsche by the drivers seat and be sure everything is closed. This includes all doors, boot lids and bonnet.

2

Insert the key into the ignition and turn it clockwise until you start the Porsche engine.

3

Turn the 911 engine off and remove the key from ignition. Wait 90 seconds before continuing to the next step.

4

Turn the ignition to the "On" position and wait 15 seconds. This position is as far as you can turn the key without starting the engine. The immobilization light located in the 911 dashboard clock will go out.

5

Turn the ignition off again then turn it back on. After 15 seconds, the immobilization light will begin to blink.

6

Enter the four digit security code using the ignition. For instance, if the first digit in the code is three you would turn the ignition from on to off, then back on. This would equal 1 digit, so you would repeat this step two more times if the first digit is "3." Afterwards, wait for the immobilization light to flash then repeat this step for the next digit. After the fourth and last digit is entered, the light will flash again to signal you are in programming mode.

7

Press a button on the key fob and hold it until the LED light blinks. This will indicate it has been programmed.

Still considered a luxury item on most cars in the late 1990s, wireless entry devices, known as wireless key fobs, had yet to obtain the ubiquity they have today. As such, the technology and ease of maintenance was lacking, at the time. Reprogramming the fob for any 1997 GM, including the GMC Sierra CK1500, requires vehicle owners to have access to proprietary computer diagnostics equipment that plugs directly into a port under the vehicles dashboard to allow a technician access to the manual programming module.

Instructions

Instructions

1

Locate the computer access port under the vehicles dashboard, which is a plastic array of small holes aligned into two rows that has a bundle of wire running out of the back.

2

Power on the diagnostic computer and locate the socket for 1997 GMC. With the computer turned on, insert the socket into the port under the CK1500s dash.

3

Select "body control module" from the list of options on the diagnostic computer screen.

4

Select "Keyless Entry Code" then "Program" from sub menu. The screen should display a number that is unique to the vehicle.

5

Hold replacement fob next to diagnostic computer for 10 seconds, or until the computer returns "Complete."