Disabling Security System on HHR

You can't disable the theft system in the HHR. It may only be a factory system, but at least its better than nothing.sparky

sparkie wrote: You can't disable the theft system in the HHR.

CAN'T!!!!!!!!     CAN'T!!!!!!!! 

Don't give me Can't =0)

sparkie wrote: You can't disable the theft system in the HHR. It may only be a factory system, but at least its better than nothing.

Upon furhter research, probably a DAMN SIGHT better than nothing, below is a portion of the text of the PATENT

Before the

vehicle can be operated, the key's electrical code must be recognized and properly decoded by the PASSKey III+ control module. The ignition key will contain electronics molded into the head of the key. The device's electronics receive energy from the control module, and upon receipt of the data, the key will calculate a response to the data using secret information and an internal encryption algorithm. The response will then be transmitted back to the vehicle.    The controller module translates the radio frequency signal received from the key into a digital signal and compares the received response to an internally calculated value. If the values match, the key is recognized as valid, and a vehicle security password (one of 65,534), is transmitted through a serial data link to the engine control module to enable fuel and starting of the vehicle. If an invalid key code is received, the PASSKey III+ controller module will send a disable password to the engine control module through the serial data bus, and starting, ignition and fuel will be inhibited. In the event the engine control module does not receive a password signal from the PASSKey III+ controller, engine operation will remain inhibited. GM also stated that the PASSKey III+ device has the capability of producing billions of codes, requiring centuries for someone to scan through them to allow theft of a vehicle.

You want to disable? Rewire entire vehicle to work off of an independent computer and relays. Of course if you need to be smogged you will fail (obd2)and the car will be worthless in a couple of years. If you main concern is the key then go buy 70's chevy pickup.Certified Security Specialist

Always check info with a digital multimeter.

I promise to be good.

Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Any other easy question like those ? Use the bypass from bypasskit.com hook the brown wire on the negative (-) key sense and go tell every thieves how to override this system. Also you can now use regular key blank. Too Easy !

HI Montrealller is right cocolaboy

Montrealler is right with most cars, but the HHR does not have a tradional keysense wire-----there is one wire that does different things at different times, which serves up all the following functions: keysense, Accessory, Run, and Start. That particular wire will go to 12 volts positive when a key is inserted, but as soon as you move the key forward it goes away and does different things. You could put one of the original keys in a bypass box, and have it triggered by the car's regular + ignition wire. But then, if you tried to start the car with another original key, the car would "see" two keys at once, and probably won't start. It might be possible to find the correct style of key, but without a transponder inside....have some of those cut to fit the car, and again, plant one original key in a bypass box as mentioned above. But anyway, transponder-key systems are very good at preventing theft, and they are also very reliable from the customer's point of view. I see little reason to disable it. (Also, the methods above would not make the car any more reliable anyway. The key in the box, or the other part of the system in the factory ignition switch, are just as likely to fail as they were before.)

Thats what everybody thinks until it happens to them. If you want red tape and hassels, try dealing with your insurance company after it gets stolen. sparky