Is it one or more fuses, the computer, or something else in 2002 Chevy Impala?

JoAnn Phillips

Asked by JoAnn Jul 06, 2013 at 07:23 PM about the 2002 Chevrolet Impala LS

Question type: Maintenance & Repair

All of a sudden, the Security light came on my 2002 Chevy Impala.  The manual says it's the pass lock system or possibly a fuse.  I'm thinking it may be more than one fuse, because I'm seeing the following problems at the exact time:  1) fog lights don't work, 2) headlights no longer come on automatically, 3) remote keyless entry no longer works - have to lock and unlock the car with the key - replaced the battery in the remote to no avail.  The car starts just fine.  I noticed in other posts people couldn't get the car to start, so this is not my problem with the Security light.  Does anyone have any ideas what could be causing these simultaneous problems?  Thanks!

4 Answers


Look for a fuse labeled BCM (Body Control Module). The BCM controls all the features you've mentioned. I'd start there first. Also, go into the "menu" on the radio. I hope you didn't put in an aftermarket radio. See if you can set up your personal settings such as lights and alarm system settings. If you can, that's where it is done. Through the radio. HTH. -Jim

1 out of 1 people think this is helpful.

JoAnn did you ever find out the problem on your 2002 Impala. I had the same thing happen today. I haven't yet checked the BCM fuse, but checked all other fuses, will check it tomorrow.


We're is bc diesel on 2002 impala


I had this issue on my 2002 chevy impala. It wouldn't start and the security light would come on. After a lot of inspection, it turned out to be the passlock module's connection to the ignition. The passlock module is a 2" x 0.5" x 0.5" black rectangular block attached to the side of the ignition. The wires from that module went into the ignition and those connection were corroded due to dis-similar metals on the pins, i.e. gold plated on one and tin on the other. I disconnected these wires and used electric cleaner on the leads and a straight wire brush. I then coated the connection in die-electric grease and never had the problem again.

Your Answer

Add photo

Related Questions

  • 2002 Impala passlock / security light problem 14 answers

    Is there a known repair for the security light/passlock problem that causes Impala and other GM products not to start for 10 to 30 minutes? If it's replacing the BCM at $500 that's fine, I just want t...

    2002 Chevrolet Impala


    Maintenance & Repair

  • 2002 chevy impala overheating. 22 answers

    Radiator fan assembly making noises. Replaced it after check engine light came on. Light came on again after replacement checked and replied fan #1. But both are working. Reset light and is still ...

    2002 Chevrolet Impala Base


    Maintenance & Repair

  • where is the fuse for blower motor in 2002 impala 3 answers

    my heat in my car is not coming on so i want to make sure that i need to check my fuse

    2002 Chevrolet Impala LS


    Maintenance & Repair

  • How do I reset the memory on my 2002 impala after the battery has been replaced 2 answers

    I have a security issue with my 2002 chevy impala. I let it sit 10 mins and it usually resets and the car starts. My battery died when I was doing this and I took it to bee charged and found it was ...

    2002 Chevrolet Impala Base


    Maintenance & Repair

  • how do i reset my computer on 2005 chevy impala 2 answers

    I change the fuel pump on my impala and then to it to emissions and it did not pass it said not ready and they told that the computer needed to be reset

    2005 Chevrolet Impala Base


    Maintenance & Repair

Looking for a Used Impala in your area?
CarGurus has 45,479 nationwide Impala listings starting at $170.

Search Chevrolet Impala Questions

Chevrolet Impala Experts

#1 Danny Wang
Danny Wang
Reputation 1,300
#2 Tom Demyan
Tom Demyan
Reputation 1,050
#3 FordNut
Reputation 1,020
View All

Related Models For Sale

Used Chevrolet Malibu"
1,077 Great Deals out of 56,172 listings starting at $1,400
Used Honda Accord"
936 Great Deals out of 74,667 listings starting at $1,295
Used Chevrolet Camaro"
504 Great Deals out of 26,536 listings starting at $2,950
Used Nissan Maxima"
392 Great Deals out of 23,670 listings starting at $1,500
Used Nissan Altima"
1,140 Great Deals out of 82,547 listings starting at $950
Used Chevrolet Tahoe"
813 Great Deals out of 32,355 listings starting at $175
Used Toyota Camry"
1,184 Great Deals out of 85,541 listings starting at $1,299
Used Ford Mustang"
653 Great Deals out of 42,740 listings starting at $1,695
Used Ford Taurus"
348 Great Deals out of 21,475 listings starting at $1,750
Used Chevrolet Monte Carlo"
43 Great Deals out of 2,066 listings starting at $800

Used Cars For Sale

2015 Chevrolet Impala LS For Sale
87 Great Deals out of 3,792 listings starting at $12,900
2014 Chevrolet Impala LS For Sale
62 Great Deals out of 910 listings starting at $9,995
2013 Chevrolet Impala LS For Sale
37 listings starting at $10,000
2012 Chevrolet Impala LS For Sale
107 listings starting at $7,245