Chevrolet Tahoe Blower Speeds

2003 Chevy Tahoe Truck. I have a five speed blower motor for my air and heater, the first two speeds dont work, is the blower motor bad, if it is how do i get to it, and how much does it cost?

Answer:
The most common cause for loss of a few speeds on the fan is a burned out blower resistor. It bolts into the HVAC case right next to the blower motor under the driver side dash. 2 screws hold it in. Remove it and it will be obvious because it will look burned. UPDATE: There is now a recall for a new blower resistor and connector for certain years of this truck. Check with your dealer to see if your is covered.

Question:
My blower for my air conditioner on my 2006 Chevy Avalanche only works on speeds 1 and 5 and seems to blow better on speed 1 when i am driving. At idle you can't hardly feel it. What would cause this? 2006 Chevy Avalanche 5.3 L V8, I checked the fuses and they are good.

Answer:
A very common cause for this condition is that the blower motor resistor / module and its harness connector have burned out. There is actually a service bulletin for this condition. You will need to replace the resistor with an updated part and part #. The dealer will need your VIN# for this.

Also the connector with wire leads for the resistor- Part # 15862656 Cut the connector off the harness and splice in the new harness. Replace the resistor. It's location under the passenger side of the dash. Remove the lower panel and you will see the bottom of the blower motor and the resistor / module next to it.

Question:
My vehicle is a 2005 Avalanche with 5.3L V-8, 2WD and 92,000 miles. Last May at 74,000 miles, the truck tripped a P0449 code and the dealer replaced the vent valve (FP 25932571). Seemed ok that it might have failed after 4-1/2 years and 74,000 miles but now the truck tripped the same code again after 11 months and 18,000 miles. Should I be looking for something else going on or is it reasonable to think that the new valve was just defective? The part is less than $30 but the $200 labor is not pleasant.

Answer:
It is quite possible that you have had an EVAP vent valve failure again, as they can go out at just about anytime. One thing I'd check into, is to find out if they just replaced the valve or installed a redesigned unit. GM has a service bulletin about this and offers a new vent valve 'kit' that includes a new valve, hoses, filter etc. There is a slight relocation involved and usually this fixes the problem. Just replacing the valve will usually result in another failure eventually, as it needs to be routed away from water and dirt intrusion.

Question:
My airbag light on the dash is on as well as my review mirror is not working. There is a red light on the review mirror, I've checked the fuse its okay, tried turning on the mirror but nothing happens and the light for passenger airbag on the mirror is not working. I was told a sensor or modular was not working correctly under the passenger seat? Is this true could I do it, not sure if it is simple or need a technician. 2003 Chevy Tahoe.

Answer:
Yes, it does sound like a problem in the passenger airbag system is causing the light in the mirror and the light on the dash. This is called the "Passenger Presence System"The airbag system would need to be scanned for codes to start diagnosis.

There is something you can check for yourself. There is a service bulletin for these conditions, if you have a code B0092.

The harness for the passenger presence system may have rubbed through under the seat on the seat frame. A wire may be pinched between the seat frame and the riser. I will send a pic of its location shortly..... If there is a rubbed through wire, it would need to be repaired, then disconnect the battery for a few minutes to clear the codes if you do not have access to a scanner.

Question:
2004 CHEVY TRAILBLAZER Inline 6 cyl. 4200. I just WANNA KNOW WHERE THE EXACT LOCATION OF THE A/C LOW PRESSURE REFILL LINE IS TO ADD MORE R134 FREON IN. IS IT NEAR THE FIRE WALL OR RADIATOR SUPPORT? DOES IT HAVE A BLUE OR BLACK CAP? THIS IS MY GF'S CAR BUT SHES IN ANOTHER STATE RIGHT NOW WITH THE CAR SO THIS IS WHY I'm ASKING SO I CAN HELP HER FIND IT.

Answer:
The low pressure A/C freon port is on the accumulator. The accumulator is the aluminum cylinder looking part under the hood on the passenger side, near the firewall.