Security light on 2002 chevy 1500 cant get off

150

Asked by Angie Feb 26, 2013 at 09:21 PM

Question type: Maintenance & Repair

Security light came on while driving. Truck
is a 2002 chevy 1500 4.8 liter regular cab
long bed 4 wheel drive. Security light stays
on even when truck is off. All head lights
wont turn on either. The truck does start.
We tryed the 30 min thing where u have the
key so almost on and wait for 10 mins each
session. Plz help!

33 Answers

Do you have the owners manual as it should probably tell you there. Sometimes disconnecting the battery can reset, but it could also cause other issues, like theft lock out features.

7 people found this helpful.
150

Yea tryed the battery disconnection didn't work and yes did look in manual nothing there

4 people found this helpful.

I'll do some checking and see what I can come up with, it may be until tomorrow though, but I will try for you. Maybe someone will come along here that has a more direct solution for you.

3 people found this helpful.

Well, I can see that you have done your home work, but it is kind of looking like you may have a BCM, Body Control Module, problem. Have you taken it to like Autozone or any auto parts store and had the system scanned? If not you may need to do that. If it is the BCM then you have a problem as it's not an easy fix. I'm sorry, but you have tried all the suggested solutions and I really can't think of anything. Sometimes if you just had a key made it could provide it has the key chip be wrong and is telling the car that your a thief, so not really of much help here. I'm sorry.

17 people found this helpful.
150

I will look into auto zone to do a scan thanks for ur help anyways

3 people found this helpful.

Your welcome and I'm sorry I couldn't give you a sure fix. If you get some trouble codes then please come back and maybe we'll have more to work with.. Good luck

2 people found this helpful.
175,805

You can try the AutoZone scan but they usually can only read the ECU codes. For more inclusive scans, try the dealership or larger repair shops.

4 people found this helpful.
100

I am having the ame problem. How were you able to get the headlights to work.

10 people found this helpful.
200

So I had this problem and found answer in another post. Quoted Text: Does it start, run then die? The securty will shut down the fuel pump. Try this to see if it will relearn the key 1- Turn key to RUN position, try to start and let key return to ON position 2-After approx. 10 minutes the security light should turn off 3-Turn ignition to OFF position and wait 5 secpnds 4-Repeat steps 1-4 two more times for a total of 3 cycles equaling 30 minutes 5- Start engine

20 people found this helpful.
960

I had this issue on my buddies truck with the no headlights, would start and shut off etc. Turns out it was a fuse in the under hood fusebox. I'll have to look to see what the fuse was called but it was all the way towards the drivers side rear of the fuse box (looking at it from drivers side front fender, it's all the way towards you and all the way towards drivers seat)

33 people found this helpful.
960

Lomeli_11, thank you for reminding me. I've attached a pic and circled the fuse and its location. "TBC" is the fuse name

42 people found this helpful.
240

Changed the 10amp TBC fuse, now the lights work and Security light it off! Question, I've never owned a newer truck like this, is the Security light suspose to flash when you remove the keys?

24 people found this helpful.
960

The fuse will say TBC on the panel diagram. Standing at drivers side front, it will be all the towards you as you stand, then all the way to the right

20 people found this helpful.
120

TBC Fuse was the answer when my truck did this. Little 10 amp fuse in the left rear corner of the fuse box under the hood.

12 people found this helpful.
50

I had this issue, a relay fuse was malfunctioning

5 people found this helpful.
50

After tearing apart half my truck and following dozens of fixes this is the one! Thanks a million!

5 people found this helpful.
80

Thank you all it was the TBC fuse under the hood you save me hundreds..

8 people found this helpful.
30

Mine just came on, haven't shut truck off seeing as I'm at an appointment for my daughter, but my headlights still work. I want to shut it off, but affraid it won't start.

3 people found this helpful.
10

TCB fuse worked for me, it was corroded not broken. If you are having this problem good cheap place to start. Then if that does not work get it scanned at a garage. It could be the BCM.

1 people found this helpful.
45

I have a 2002 chevy tahoe. Thank you everyone for the info it was the bcm 10 fuse which i dont understand I had my dude try to hook my subwoofers and all of a sudfen my truck started then stalled and that fuse did the fix lol thank you guys.

4 people found this helpful.
30

I swapped out my turn signal arm and afterward my ‘02 Avalanche would crank but not fire and run. Security light stayed on. Key fob not working. Checked the TCB fuse and it was broken. Replaced and vehicle fired up immediately. Lesson learned always disconnect battery when doing work. Thanks for all the helpful posts!

3 people found this helpful.
20

WELL MINE 02 ' WAS GETTING OIL CHANGE THEN TURNED ON BUT NOTHING SO THEY TOLD ME TO UNPLUG IT BUT DIDNT WORK , SO I THEN PLUGGED BACK EVERYTHING & PUT KEY ON FOR 10 MIN, THEN PULL KEY BACK ON PARK THEN TURN ON THEN NOTHING SO THEN I JUST PULL STEERING WHEEL UP & DOWN CLICKED & TURNED ON HAVENT HAD PROBLEM BUT MY SECURITY LIGHT TURNED ON BUT I JUST THOUGHT IT WAS SUMTHING WITH ALARM.....UVALDE TX EN THE HOUSE

2 people found this helpful.
10

Half of my Fuse box actually went out, I have never heard that happening before. But literally half of my fuse box went out that caused this and didn’t know until checking the power that the fuse box was receiving. And half of it was not receiving power. Went on amazon found a fuse box with all the fuses attached and simply plug and played and the truck turned on without an issue. Pain in the ass to figure out it was that.

1 people found this helpful.
20

Someone please help me, I replaces the 10A fuse. Now the truck still doesn’t start, it’ll turn on for like a second or 2 then turn off. Headlights work now and everything I just can’t keep it running. 2002 Chevy Silverado

2 people found this helpful.
10

YES THE TCB FUSE WAS MY PROBLEM ALSO THANKS A MILLION . JBAKER33 YOUR THE MAN.

1 people found this helpful.

Just started having an issue on a 2002 chevy tahoe where the security light stayed on and the fuel line would shut off when trying to drive it, replacing the 10 amp TBC fuse did the charm, appreciate your help jbaker33!

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