Question about 2005 Chevrolet Silverado 1500HD

1 Answer

I have a Chevy 1500 Silverado (5.3) with a heater that does not want to work. I can feel heat coming out of the dash vents, but the blower does not want to work. Anyone else have this problem, or any ideas?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 50 Answers

First I would check to make sure there is/is not 12v going into the blower motor.  You can test this with a volt meter by unpluging the two wire plug that plugs into the blower motor.  This is located under the passengers side glove box. IF YOU DO NOT HAVE 12V TO THE BLOWER MOTOR (WHILE THE BLOWER IS TURNED ON WITH THE KEY ON) PROCEED TO THE NEXT PARAGRAPH.  If you do have 12v, then it more than likely is your blower motor.
If this isn't the problem then I would check the Blower Motor Resistor.  This part controls the speed in which the motor actually turns. (the knob in the dash doesn't actually resist the 12v from the battery causing the fan to move at the different speeds, the blower motor resistor does)  This part is easily changed.  It usually takes about 20-30 mins at the most.  It is located in the air ducting under the passenger's side of the dash.  The part is pictured here... I have a Chevy 1500 - 32bbabb.jpeg
c15c790.jpeg
Now.  I have done this work on a 2005 Chevy 1500 and the resistor that all parts stores has is WRONG!!! The listing is wrong! (I work for O'Reilly Auto Parts and I fought with this for about a week trying to find the right one...)  If your resistor has 3 mounting screws (as shown above) you will need a resistor off of a 2000 Chevy Impala (part number RU867   -   It is manufactured by Borg-Warner with a life time warranty.)  If you look it up for your truck (i.e. - 2000 Chevy 1500) it will show a part number RU1064.  This resistor will have only 2 mounting screws.  I don't know why these parts are listed wrong, but they are.
To change this part, just remove the screws, and unplug both electrical plugs.  Thats it.  Then just replace it with the old one.
Any further questions, just ask!!! Please rate!!! Thanks!!!

Posted on Feb 08, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1995 chevy silverado heater blower blows but cant feel any air no where


Possible that the vent is blocked or there is fault in the vent selection. You need to remove the blower unit and check the area of the distribution hose.
make sure that the selection panel control works or this can prevent the air to be blown out.

Dec 09, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

My 2003 chevy silavarao 1500 blowes heat only to passengers side of truck and blower wont run on 4 and 5


Blower concern is the resistor
heater concern is the drivers heat/cold door actuator.

Dec 03, 2010 | 2003 Chevrolet Silverado 1500

1 Answer

2006 chevy silverado 2500hd truck heats up to operating temp while in parking lot blower works well but truck will not blow any hot air until truck is driving at at least 15 to 20 mph. fuses good think...


If I understand you correctly, your temp gauge shows correct operating temperature, your blower fan blows air that you can feel with your hand from the right floor or dash outlet, but that air doesn't feel warm until you are moving?

If so, several possibilities come to mind. One is that your coolant level is low. Even though your temp gauge reads in the right range, the coolant level could be low enough that it doesn't reach the heater core until there is enough engine RPM to create more pressure from the water pump and force what coolant is there toward the heater core. Another possibility is that your heater controls are not able to do their job. A stuck flapper in the duct or a malfunction with the temperature control system could be causing the problem, and at 15-20 MPH there is enough air coming through the outside air vents to provide some heat.

I'd check the coolant level first, though. The other possibilities are more far-fetched.

Nov 26, 2010 | 2006 Chevrolet Silverado

1 Answer

I have no heat when I turn on my heater blower on a 99 silverado 1500


Two things come to mind one the flap on the inside of the air duct is not switching over to allow heat to come through. Second your heater core could have a blockage. Go under the hood find both heater hoses run your truck till it reaches normal operating temp then feel both heater hoses one at a time. If one feels very hot and the other feels cold or even luke warm you have a blockage.If they both feel hot then look into the duct works under the dash. There should be a valve that switches the door between your heater duct and your ac duct that may not be operating properly. Some valves are vacume actuated so look for a broken vacume line.

Dec 01, 2009 | 1999 Chevrolet Silverado 1500

2 Answers

1999 chevy silverado heat/air blower only works on high speed


little black box to the left of blower motor (2) 7/32 screws holding it heater box with a plug with 7or 8 wires feeding it the plug is probably going to be melted inside

Aug 05, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

2003 chevy silverado air does not blow through vents. Condenser works. Pipes are cold. Fan works. Modular (next to fan) repalced to get fan to work. Heater air conditioner controls under radio replaced....


The air vents are control by vacuum line and or linkage.

Listen for hiss or feel for vacuum leak under the dash,

Feel for broken linkage(s) that are close to the vents.


WORK BACKWARD if you have small hands to feel out where is the missing link.

Jul 15, 2009 | 2003 Chevrolet Silverado 1500

1 Answer

Defroster & floor blowers don't work but front facing vents do


There are what they call mode door's these days they have a electrical motor that turnes the door to different posistions...sounds like yours is become broken. It would depend on your expertise in the ac & heating system area to replace the part. Sometimes easy and most of the times the dash has to be removed.

Feb 12, 2009 | 2002 Chevrolet Silverado

1 Answer

Heater issue with Chevy 1500 4wd 5.3 Silverado


CHECK THE CONNECTOR ON THE BLOWER RESISTOR. this is the board he replaced, the connector burns up on them also it is probably not making a good connection. look under pass side by the blower motor the board is right there will be a 5or 6 pin connector unplug it an see if melted looking. chevy sells just the pig tail so you can wire in

Jan 05, 2009 | 2005 Chevrolet Silverado 1500HD

Not finding what you are looking for?
Cars & Trucks Logo

926 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

70374 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6878 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...