# 2002 Chevy Silverado Alarm System Problem

**URL:** <https://community.cartalk.com/t/2002-chevy-silverado-alarm-system-problem/11140>\
**Category:** Maintenance/Repairs\
**Created:** [February 26, 2008, 1:14am UTC](https://community.cartalk.com/t/2002-chevy-silverado-alarm-system-problem/11140 "2008-02-26T01:14:36Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Carpenter](https://avatars.discourse-cdn.com/v4/letter/c/bc8723/32.png) [@Carpenter](https://community.cartalk.com/u/Carpenter)\
**Post date:** [February 26, 2008, 1:14am UTC](https://community.cartalk.com/t/2002-chevy-silverado-alarm-system-problem/11140/1 "2008-02-26T01:14:36Z")

</div>

I have a '02 silverado 2500 Duramax. After Leaving the ignition key on overnight I tried to start it & got no response from the starter, but the alarm came on ( factory system w/ lights, horn, & siren) and will not turn off. Tried the lock/unlock buttons on the remote and key in the ignition, but nothing happens. The alarm continues and the engine does not turn over.

---

<div class="post-metadata">

**Author:** ![Bill\_Russell](https://avatars.discourse-cdn.com/v4/letter/b/e5b9ba/32.png) [@Bill\_Russell](https://community.cartalk.com/u/Bill_Russell)\
**Post date:** [February 26, 2008, 1:17am UTC](https://community.cartalk.com/t/2002-chevy-silverado-alarm-system-problem/11140/2 "2008-02-26T01:17:41Z")

</div>

usually these alarms shut off in a few minutes to avoid draining the battery. This one doesn’t? At least the battery isn’t dead.

---

<div class="post-metadata">

**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\
**Post date:** [February 26, 2008, 3:36am UTC](https://community.cartalk.com/t/2002-chevy-silverado-alarm-system-problem/11140/3 "2008-02-26T03:36:58Z")

</div>

You say “key in the ignition”. Am I correct in thinking (I hate that other word) you turned the key to the ON position and then OFF again?

I test the security system periodically in my '02 Tahoe and when I set it off, I insert and turn the ignition key as I described to turn it off.

If the security system doesn’t shut off at that point, I would suspect it’s because the battery is dead to the point where it doesn’t have enough juice to send a signal to the computer.

Was this battery new or the original? If original, being 5 going on 6 years old, you may want to replace it. Make sure there is no parasitic drain though.

Have you removed/cleaned and replaced (wrench tight) both ends of the battery cables?  
Corrosion has a tendency to build up under the positive connection plastic cover.