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.
Why are the lights dimming on my GMC Yukon?
Dimming of the lights is an indication that current is being pulled from the battery. If the battery is in a low state-of-charge (discharged condition), the driver will notice a more pronounced dimming than a vehicle with a fully charged battery. 2.
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.
Why does my car not start with a new battery and alternator?
With a new starter, battery, and alternator (assuming you have not drained the battery attempting to start it), the starter should attempt to crank over the engine. If the starter does not make any noise when the key it turned to crank over the engine, you have an issue with the fuses, or the circuit.
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.
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.
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.
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.
Dimming of the lights is an indication that current is being pulled from the battery. If the battery is in a low state-of-charge (discharged condition), the driver will notice a more pronounced dimming than a vehicle with a fully charged battery. 2.
What happens when you replace a Sierra Denali battery?
Basically connects a battery to the accessory power outlet to maintain a current on all the systems’ memory modules. Otherwise after you remove then reinstall and reconnect the new battery all the modules become stupid and have to relearn driving habits and require a reset of all Settings from the default settings.
Are there any electrical problems with my GMC Yukon?
Battery goes dead after door is open for a short period of time or a dome light is on for a short period of time. Had battery, alternator and starter tested – all fine. Was loyal Toyota guy but needed a bigger vehicle and no model from Toyota fits the bill. Starting to regret going with GMC
When to replace battery in GMC Yukon XL?
Although some batteries last much longer, most batteries begin breaking down chemically after four years, so you could experience dimmer headlights and other negative effects before you have a dead battery in your Yukon XL that you need to replace. Replacing the battery in your Yukon XL involves removing the terminals.
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.
Are there any problems with the GMC Yukon?
GMC Yukon owners have reported 15 problems related to car will not start (under the electrical system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Yukon based on all problems reported for the Yukon.
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.
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.
What to do if your GMC Yukon key fob is dead?
Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. GMC key fob battery replacement. An error occurred while retrieving sharing information. Please try again later. Visit our website.
What should the voltage drop be on a GMC Truck?
The voltage drop should be performed with the fuel injectors disabled and while cranking the engine. The voltage drop should not exceed 200 mV. If the voltage drop is above 200 mV, replaced the effected cable. Please follow this diagnostic or repair process thoroughly and complete each step.
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.