What causes the idle voltage on a GMC Yukon?

Items that affect the vehicle’s electrical system current and voltage at idle are the number of electrical loads being used, including add-on accessories, and extended idle times.

What should alternator voltage be on Silverado Sierra?

Did you check it on the battery terminals or the alternator terminals? 13.8 and 13.9 are normal. 14.0 -14.8 is normal. Crank the truck make sure everything is off (ac, heater, radio) and test the alternator straight from the alternator terminals you should get in the 14 area.

What happens if your GMC Sierra has low oil pressure?

One of the most serious issues that can happen to your GMC Sierra ‘s engine is if it ends up with low oil pressure. Low oil pressure will cause the engine to seize up. When the oil pressure light on, it should be assumed that the engine locking up is imminent. We advise not running the engine until the issue can be properly diagnosed.

What’s the voltmeter reading on my Silverado Sierra?

I just purchased a 2007 1500 nnbs with the 5.3L. Truck has 81k miles. The other day while driving the interstate, I noticed that the voltmeter was reading around 13VDC. I don’t have any service lights, so I just kept an eye on things while driving.

When did my GMC Sierra air conditioner stop working?

I had a 2001 GMC Sierra that did this when truck was less the one year old (summer of 2001 is when it was). The dealer had the truck in the shop idling for a long time and the A/C worked perfectly. I told them to take it for a ride and see. So the service manager in an effort to convince me nothing was wrong went for a ride with me driving.

What’s the problem with my Chevy Silverado 1500?

When it decides to act right, all is will. Anyone else found a solution? Chevy silverado 1500 2004. The same problem, random intermittent starting. I had had this problem before about 5 times and each time I disconnected and reconnected the negative battery cable it started fine. This time that didn’t work.

Items that affect the vehicle’s electrical system current and voltage at idle are the number of electrical loads being used, including add-on accessories, and extended idle times.

Is the Bose sound system available in all cars?

While Bose strives to provide accurate and up-to-date information, you should consult with your local car dealer to verify Bose system information for specific vehicles prior to purchase. Not all vehicles or Bose sound system options are available in all markets.

What kind of engine does GMC Denali have?

7,550-lb rating requires a properly equipped 4WD Canyon Denali model with available Duramax 2.8L I4 Diesel engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options oraccessories may reduce the amount you can tow.

How do you reboot the audio system in a Nissan?

• Press and hold down the audio system power knob for at least 20 seconds. • Press and hold down the audio system power button for about 10 seconds until the Nissan logo appears, signifying that the reboot is underway. • Press and hold down the audio system power knob for at least 10 seconds.

What happens when a GMC Yukon engine slows down?

As the engine/generator speed changes, so will the current (amperage) output of the generator. As a vehicle slows, engine/generator RPM slows and the current (amperage) output of the generator may not be sufficient to supply the loads, the vehicle system voltage will drop and the lights will dim.

When to supplement the battery in a GMC Yukon?

With enough electrical loads “ON”, it is easy to exceed the generator current (amperage) output when the engine is at an idle of 600-700 RPM. This is a normal condition. The battery supplements for short periods of time.

How to diagnose battery Guage on a GMC Yukon?

The engine computer (ECM/PCM) will ramp up engine/generator speed in small steps so engine speed variations are not noticeable to the driver. For diagnosis of the battery and/or the generator, refer to the appropriate Service Information (SI) or Corporate Bulletin Number 05-06-03-002C.

What causes a GMC Sierra 1500 to have a lean idle?

Vacuum leaks can cause a lean condition and/or possibly a high idle. Check for cracked hoses a bad gasket or a faulty EGR or PCV Valve. 70 people found this helpful. The only other thing that will cause a lean condition is low fuel pressure. A vacuum leak will be problematic at idle and go away with higher rpms.

What should the idle rate be on a 1997 GMC Truck?

Underdog, I don’t know the 1997 5.7, but 1000rpm sounds like a high idle, not where it should “bottom out”. A V8 should idle at 500rpm. GoNDown, did you recently disconnect your battery? After I left mine dead in the yard for a while and didn’t charge it, when I started it up it ran like you describe for a few days and then it was fine.

What does the fuel smell like in a GMC Sierra 1500?

If so pull the air filter off and sniff the throttle body for a fuel smell. If the diaphragm has ruptured it will literally be like putting a hose with fuel into the intake and running it full.

What causes a GMC Sierra 1500 to stall?

But the stable idle won’t last long, it’ll idle low and rough. Mpg has decreased drastically and give off a rich smell when running. 308 people found this helpful. Bad hesitation off of the start, pumping the gas pedal helps to get her going. Pushing the pedal hard well bog it out and almost stall. 290 people found this helpful.

How many volts does a GMC Yukon have?

This is common on large GM Vehicles: Some customers may comment that the voltmeter is fluctuating between 12 and 14 volts on their full size pickup or utility vehicle. Starting with the 2005 model year, light duty full size pickups and utilities are equipped with a new Regulated Voltage Control (RVC) system.

What kind of engine does GMC Yukon Denali have?

From the Archive: An all-new powertrain—motivated by a 380-hp 6.2-liter V-8—and a fresh exterior push the Yukon Denali closer to it’s flashier, more expensive cousin, the Cadillac Escalade. From the April 2006 issue of Car and Driver.

What happens to the generator in a GMC Yukon?

When high current loads (blower, rear defogger, headlamps, cooling fan, heated seats, power seats, electric “AIR” pump, or power windows) are operating or cycled “ON”, the generator’s voltage regulator can delay the rise in output. This effect, usually at lower engine speeds, can take up to ten seconds to ramp up the generator output.

Why does my GMC Yukon have low voltage?

With the engine running the gauge should measure the output of your alternator. The low voltage may be indicative of issues with your alternator. If you have one of those that shows the voltage without the engine running, then check your gauge for a bad resistor on the dash panel.

What’s the problem with my GMC Yukon Denali XL?

Have a 2009 Denali XL with many of the same issues identified here EXCEPT doors locking and unlocking and the rear window thing. Been fighting the gremlins for almost 3 years. Originally I though I had it narrowed down to a broken battery post in the battery when I seemed to be able to wiggle the posts and got everything to work.

When did the GMC Yukon Denali battery go dead?

We purchased this 2010 Yukon used in March 2011 with about 18K miles. This summer the battery went dead while the back was open while loading the vehicle after a camping trip. I have since shut off the dome lights when loading/unloading to eliminate the issue.

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