Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?
Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.
Although repair to ignition lock/key anti-theft systems can be frustrating on the diagnoses, once the problem is determined, its actually fun to look at what you went through.
Stay up to date with these systems.
These systems are considered and reffered to as anti-theft, but they do not stop the theft of the vehicle. These systems are seperate from alarms.
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Hi, While it is not the correct way to fix the problem like changing head gaskets would be, it is an inexpensive repair. The only caveat is that it may seal forever and maybe not because of a truly
Hi Jim, If your pull down motor is not working and you need a temporary fix, no problem. Open the trunk so you are looking at the bottom of the lid. Remove the surrounding trim around the trunk latch
Hi, A blast from the past---Here is GM's slip shod bypass that did in fact work. https://www.gmupfitter.com/publicat/bull/bull26.pdf You can also go to Directed Electronics and get a 555L module
Hello, It sounds like you have one or two blown headgaskets. Normally, You don't know what you are getting into here. You have an aluminum engine that literally melts when overheating. until the engine
Hi Gabe, You didn't state the year make and model, but that should not matter. I am going to pose a couple questions to you. None are meant to be demeaning to your knowledge, or condescending, and they