Replaced engine batteries now "Security Light is on" - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Alan's Classic · 12-20-2010, 07:30 PM

A good friend of mine has a 2002 C3500 6.6L. He changed the engine batteries and now the security light on the dash stays on. Everything works fine. The light just stays on. Any suggestions. I've done some searching on here about this problem and really haven't found the solution. I've also checked on alldata.com.

I did see mention of a scanner. Is it a OBD2 scanner? If I need a scanner I have a Genesis OBD2 scanner at work.

It seems like it would be as easy as a simple reset. Thanks for any input.

**bwood** · 12-21-2010, 01:00 AM

I'm thinking there is a reset procedure, but I can't remember what it is. It was something like turn the key on (but don't start) for 10 mins then off for 10 mins, but I don't remember if it applies to this truck.

daverod · 12-21-2010, 03:49 PM

Take the bulb out.

But I'm kinda getto.

12-20-2010, 07:30 PM	#1
Alan's Classic 1 thing at a time is progress. Join Date: Jun 2007 Location: Ball Ground GA Posts: 5,511	Replaced engine batteries now "Security Light is on" A good friend of mine has a 2002 C3500 6.6L. He changed the engine batteries and now the security light on the dash stays on. Everything works fine. The light just stays on. Any suggestions. I've done some searching on here about this problem and really haven't found the solution. I've also checked on alldata.com. I did see mention of a scanner. Is it a OBD2 scanner? If I need a scanner I have a Genesis OBD2 scanner at work. It seems like it would be as easy as a simple reset. Thanks for any input. __________________ Alan Philippians 2:14-16 Alan's Classic Facebook page. North Georgia Group Project 1965 Vitamin C-10 1995 GMC Sierra K1500 The "Wrecker"

12-21-2010, 01:00 AM	#2
bwood Registered User Join Date: Jan 2003 Location: Denison, Texas Posts: 1,920	Re: Replaced engine batteries now "Security Light is on" I'm thinking there is a reset procedure, but I can't remember what it is. It was something like turn the key on (but don't start) for 10 mins then off for 10 mins, but I don't remember if it applies to this truck. __________________ 2013 Ford F150 FX4 2006 Chevy Silverado 1500 1982 Chevy C1500 2020 Ford Explorer Limited 2008 Ford Escape

12-21-2010, 03:49 PM	#3
daverod SSN 706 Join Date: Mar 2009 Location: Pocatello Idaho Posts: 3,821	Re: Replaced engine batteries now "Security Light is on" Take the bulb out. But I'm kinda getto. __________________ Daverods 64 C10 Daily driver 292 3 speed "Driver" Daverods 66 Build C10 Bags 350/350(On Hold) Daverods 52 Build 3100 S10 chassis,Bags, 350/700r4 "Click it"



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