Question about 2005 GMC Yukon

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My 2005 Yukon won't start no lights or horn no power to anything. Battery is fully charged.

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I worked on a vehicle with same problem turned out to be main fuse in underhood fuse box or it could be fusible link. A spot in the positive battery cable that is an inline fuse. You will notice if it is blown by a break

Posted on Apr 02, 2015

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Car won't start battery fully charged,horn,trunk button,lights nothing power works


check your cars fuseable link..(cars main fuse)...check your owners manual for location..

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Gave a jump start and now headlights don't work on a 2005 yukon denali


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I tried to start my 2005 Ford taurus and after a spit second of attempting to turn over it shut down. I would have thought it was a dead battery (because that is how the car is acting) but when I push any...


Hello, The Ford systems are real sensitive to Battery fluctuations. You need a fully charged battery to start out with. If the battery is too low and the jump is removed, the car can stop charging.

Ford also made it to reduce the Voltage to the starter. If the battery is low, the Antitheft will reduce the battery voltage to 7 Volts or less.

There are also Relays in the Powerbox. The Ignition Relay may be bad. I understand that the Horn Relay is the same part and if you check the part numbers on the Relays you may be able to use the Horn Relay to get home.

A fully charged battery wil show 13.2-13.6 Volts. All of the Ford, Mercury, and Lincoln vehicles can malfunction like this, so it just isn't your individual car. Your Battery is 5 years old and anything can happen.

I hope my solution is very helpful to you.

Jul 18, 2011 | 2005 Ford Taurus

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