Why is the blower motor not working on my GMC Yukon?

All appear fine. I then pulled the blower motor out of dash and determined there was power to the plug at the motor. I bench tested the blower and it worked fine. I have power from the switch to the blower resistor and from the resistor to the motor. Plugging the resistor back in, plugging the motor into the resistor but the motor fails to work.

Is the front blower on my Tahoe Z71 not working?

Stockton, Ca. Greetings, I have a 2004 Tahoe Z71 with a non working front blower motor. My son, which drives the vehicle, stated that the blower motor just stopped working while going down the road. I began checking it out by checking all fuses and relays.

Why is my front blower motor not working?

My son, which drives the vehicle, stated that the blower motor just stopped working while going down the road. I began checking it out by checking all fuses and relays. All appear fine.

Why does the blower speed Hi stop working?

‘HI’ is the only blower speed that doesn’t depend on the blower resistor to function. When the blower motor resistor fails, 1 of the 3 or all 3 first speeds stop working. To explain this a bit further, this is due to the nature of how a resistor reduces the voltage that passes thru’ it by converting some of it into heat.

Why is my Silverado Sierra blower not working?

Additional Info: The resistor makes a clicking sound when the control knob is turned to setting five. Another thread suggested that the contact plug may be burnt and need cleaning/replacing. That would restrict power flow. Got the same problem with mine on 2nd highest setting, gonna look into it in spring.

Is the fan speed set or intermittent on a Silverado Sierra?

Just the blower is intermittent, not the compressor. Fan speed does not have set speeds, it’s more like a rheostat. It has the rotary control.

Where is the fuse box located in a GMC Yukon?

The underhood fuse/relay center is located in the rear of the engine compartment near the brake fluid reservoir. GMC Yukon – fuse box – engine compartment *1 — Gasoline Engine and Fuel Injection Rail #2. *2 — Gasoline Engine and Fuel Injection Rail #1. *3 — Gasoline Engine; Oxygen Sensors. *4 — Gasoline Engine; Oxygen Sensors. *5 — PCM Ignition

When did the GMC Yukon XL come out?

In this article, we consider the second-generation GMC Yukon / Yukon XL, produced from 2000 to 2006. Here you will find fuse box diagrams of GMC Yukon 2000, 2001, 2002, 2003, 2004, 2005 and 2006, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

What are the fuses on a GMC Sierra?

STOP LPS Fuse #14 20A VEH STOP and CHMSL Fuses. Trailer Wiring (LH. RH Turn and Stop Lamp) ECM 1 Fuse #15 10A Vehicle Control Module (VCM)/Powertrain Control Module (PCM) from IGN I Relay) INJA Fuse @20 15A Fuel injectors 1. 3, 5, and 7.

Where are the fuses in the Yukon XL?

See other GMC Yukon / Yukon XL: Cigar lighter (power outlet) fuses are located in the Engine compartment fuse box (see fuses “AUX PWR”, “CIGAR” / “CIG LTR” and “LBEC”), and since 2003 in the Passenger compartment fuse box (fuse “AUX PWR 2”).

Why is the front fan not working on my Escalade?

The front HVAC does not work but the rear does. The front doesn’t blow or anything, but the back does. I just replaced the blower motor resistor with a new acdelco part number 15-81638 (GM 13598099) and that did nothing. Is a fuse or something to check, or what could it be?

Why does my GMC air conditioner stop working?

For about 5 miles the A/C worked normally till we hit a R/R and the bump made it stop blowing cold air and he was finally convinced. Back to the shop and 30 min later they found the problem. Turned out to be the low pressure switch, (under hood on bottom of small tank) it was corroded and causing a loss of electrical contact.

What to do if your power steering is not working?

There are no hoses going to the brake booster from the power steering system. The tires are 1 size larger than stock. I have a key lift to raise the front of the truck 2″ or level.

Is the power steering on my Silverado working?

4 years later… Thank God for this place…..My 03 Silverado is acting up. Power Steering Fluid level is fine, hard to turn and it’s weak at low rpm/idle situations… but only when the steering was turned a bit. Seems to act up more when making a slow, low idle, left turn.

How to contact GM about the steering problem?

How to contact the manufacturer: GM has not yet indicated when the recall will take place. Owners may also contact Cadillac at 800-458-8006, Chevrolet at 800-222-1020, and GMC at 800-462-8782. NHTSA campaign number: 18V586. GM’s own number for this recall is 18289.

Why is the rear AC warmer than the front?

When the rear ac is turned on only, the air isn’t that cold. But when the front ac is turned on, the rear ac is blowing colder air out the vents. That’s because the rear AC by itself can’t turn the compressor on… The front AC has to be on for the compressor to turn on….

Is the front of my GM Truck warm?

The gauge never went past 45psi when recharging and the front vents where still warm afterwards. This morning I decided to turn on the ac in the front while driving to work and the air was cold but it could be colder. I went and bought another can and will recharge again at lunch time and post my results.

Is the a / C on in my GM Truck?

After two cans of R134a and 3 days later a can of Stop Leak, everything is cool and holding its pressure. We are getting some very humid 95 degree days so the A/C is being used frequently. Its 10:12am and its already 91 degrees outside…

What causes a bad or failing blower motor relay?

Blown fuses. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay circuit fuse. If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current…

What causes a fuse to blow on a blower motor?

If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.

Why does my GMC Sierra heater not shut off?

I have a 2003 GMC Sierra and just today when I shut my vehicle off I noticed the heater was still moving air. At first I thought this might be normal and it would shut off after a slight delay. However, once I pushed the power button on the heater the blower still continued to run.

Why does my GM front blower not shut off?

GM has issued a technical service bulletin (TSB) #06-01-39-002B to address problems with the front blower motor. In some cases in cold weather the blower motor may not run, or if it does, it may not shut off when you turn off the vehicle. The TSB applies to the following vehicles with automatic temperature control:

What should I do if my blower wont shut off?

If the blower stops with either of these steps, the problem is in the HVAC control module. However, if the blower continues to run at high speed with either of those tests, replace the blower motor control processor. Just as an FYI, the retail price of the blower motor control processor is $280.34.

What should I do if my blower won’t shut off?

Refer to either the Blower Motor Control Processor Replacement or Blower Motor Processor Replacement-Auxiliary procedures in SI. After replacement of the blower motor control module, the customer may notice a slightly higher than expected blower motor speed at any of the blower speed settings.

What to do if your front fan is not working?

Decided to hit the bottom of the blower with my 4D cell maglight. Percussive maintenance. Blower started right up. Works in all speeds. Pulled out the little white rubber plug under the blower and sprayed a little bit of wd-40 in around the shaft (bearing) and left blower running for about 10 minutes.

What happens if you lose the blower motor relay?

The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems. Without it, the AC system will not be able to circulate any heated or cooled air. The blower motor relay controls the current used to power the blower motor,…

Why does my Yukon Denali have no air?

Here’s how I resolved the no rear air problem in my 2006 GMC Yukon Denali. Rear air controls just show “OFF” when you try to power them on. I’ll answer them one at a time. This is actually working as designed. The rear air controls are only active when the front fan selector is set to “AUX”.

Why is the blower motor not working on my GMC Yukon?