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If the security light on your 1999 Yukon stays on, first check the door locks and ensure all doors, including the trunk, are fully closed. A malfunctioning door sensor can trigger the security system. If everything seems secure, try resetting the system by disconnecting the battery for a few minutes and then reconnecting it. If the issue persists, it may be necessary to consult a professional for further diagnosis or potential repairs.
What else can I help you with?
You just replaced the battery in a 99 cirrus but the battery light stays on?
did you check the alternator??
How do you install scytek alarm on a 99 Yukon with out instruction?
I have a Scytek alarm in want to insall on my 99 Yukon without instruction
How do you fix a check eng light that stays on in a 99 mirage?
Repair whatever is ailing the engine. That light is telling you something, have the codes read and find out what it is and repair it.
What makes the security light come on in a 99 Chevy Suburban?
If the computer and the security system is not communicating correctly the security light will come on in a 1999 Chevy Suburban. Starting the car with a spare key may offer a quick fix.
How tooveride 99 shevy suburan security system?
How to overide security system that causes no fuel to motor in 99 Chevy suburan 1500 4wd security light flashes when it goes solid it starts nut takes 20 mins of turning on and off
How-tooveride 99 shevy suburan security system?
How to overide security system that causes no fuel to motor in 99 Chevy suburan 1500 4wd security light flashes when it goes solid it starts nut takes 20 mins of turning on and off
How do you change the back brakes on a 99 Yukon?
Take it to a professional
Where is the oil filter on a 99 Yukon?
Left side at the bottom.
Where is the PCV valve on a 99 GMC Yukon?
The PCV valve on a 99 GMC Yukon is found in the left valve cover. It allows trapped gases inside the engine to be recirculated and reused.
Your 99 gmc Yukon is stuck in 4 wheel drive but the 2 wheel light is on how do you put it back into 2 wheel drive?
back up a few feet
Where is the inertia switch on 99 Yukon?
Gm does not use inertia switches.
When I crank my 99 GMC Suburban it starts and immediately dies The security light also stays on.?
The Passlock security system is the problem. Should be recalled. Go here http://newrockies.com/?ap_id=craigpeate for a module to bypass the system completely. The resistor workaround at the key isn't always the only problem. I tried it on my 99 Suburban and it didn't do any better with the resister bypass. You need to eliminate the entire security system. Buy the pro module for $179 plus shipping and save yourself the hassle of dealing with it ever again.
