GMC Sierra owners have reported 2 problems related to anti-theft controller (under the electrical system category). The most recently reported issues are listed below.
Many problems: 4 wheel drive sensor, front end suspension, parking brake, service brakes, anti-lock brakes, speed sensors, radio, center console, engine noise rapping when starting, tailgate cables, anti-theft sensor, and now the battery voltage gauge needle excess dropping when stopping, engine idling to low when stopping. Dealer says problem is normal. Let's test drive a new truck and show me it is normal. This truck is a lemon in my eyes!.
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all problems of the 2001 GMC Sierra
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I dont really know what lead up to the failure but the pass lock anti theft system on the gm products really needs to be looked into. This problem can cause the vehicle to shut down at any given moment or not start at all. 90 % off the vehicles that have the pass lock system on them have problems. Gm mechanics say it is the ignition switch or this or that but it isnt it is the passlock system. After parts have been replaced it still happens. I live in a small rural community with alot of trains and I dont feel that my truck should be stalling on the railroad tracks because of this problem. After looking around on the net to find help there is thousands of people who have this same problem. What happens if the vehicle stalls in the wrong place or an emergency comes up and it will not start. Someone could get seriously hurt or even killed. I beleive this is a serious safety issue and should be looked into. My vehicle itself stalled for 10 min in the middle of the road. I really dont know what could fix the problem except there is ways to bypass it. Rewire your ignition switch. This could cause other problems. Or you can buy a fifty dollar bypass module. Then you have to live with the security light on. Ya you could unplug the light in the message center but what about all the other alerts that come up in there. You would loose them. I would rather have my security system working properly so that if someone trys to steal my vehicle they have a harder time doing so & so my family and I dont have to worry about stalling somewhere. I would think that with all the complaints that gm gets about this they would have a bit of an idea to fix it. Thank you for your time.