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Q: What do you do for an 99 Yukon security light stays on?
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did you check the alternator??


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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


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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


Where is the oil filter on a 99 Yukon?

Left side at the bottom.


How do you change the back brakes on a 99 Yukon?

Take it to a professional


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.