Questions & Answers for: GMC Sierra security light

...Security light coming on. This is many times an indication of a failing Body Control Module (BCM). Initially, the Security light will come on then go off, progressing to a constant on light, before ...

light up) problem is computer or wiring (or possible security system but i don't recall them having security system on pickups in 1989) you can get a noid light set at most parts stores i checked auto

...security" light up on the cluster.The key lock has a sensor that reads the chip in the key.  If the sensor fails or the chip fails the computer won't let the vehicle start.Most of the time ...

...security light is on. we knew that now it just will not start. I think the security has to be reset. 1999 sierra It sounds like the system is in Long Tamper Mode. You can usually reset the system by ...

...security light came on 2002 gmc sierra won't start, security light came on The security light is a visual indication that something in the car's antitheft system is failing.  In most ...

hi i have 12/01 Gmc sierra security light is on and truck will not start It sounds like a theft deterrent circuit has been activated.. Check your security device handbook on how to reset it.

security light and instrument cluster issue 2000 gmc sierra 4x4 pickup starts and runs fine, but after its started the security light comes on the fuel gauge goes to empty the water temp goes to zero ...

...security light is on could this be in a fail safe mode I would think so, if the security light is on the computer is not registering the key, try turning the ignition to the "on" position for 15 ...

...security light is on. Remote will not open doors. What is wrong with it The security, antitheft or lock picture/icon is a visual indication that something in the car's antitheft system is ...

...security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks ...