Question about 2003 Chevrolet Tahoe

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The heat in my 2003 chevy tahoe doesnt work. The motor wont spin. I've checkd fuses & the wire from the resistor to the blower motor. All have power. Ive hook a neg/pos charge to the motor & it spins.

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  • Master
  • 682 Answers

It has an internal card fuse which sits in the bottom of the blower unit.these get condensation and rust so the contact strips corrode over time.you remove by unscrewing one Philips screw and pull the fuse card out...inspect.i fixed mine by solder wire bridge across the breaks but if you can source from breakers or eBay all well and good.

Posted on Apr 01, 2015

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Posted on Jan 02, 2017

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SOURCE: blower motor resistor on 2006 chevy tahoe

See http://www.sparkysanswers.com/labels/Blower.html, Sparky has all the information that you will need. Great help.

Posted on Jan 20, 2009

  • 507 Answers

SOURCE: 2003 chevy tahoe no rear heat

I know the earlier tahoe's have two heater lines running from the engine compartment to the rear under the vechile. Those lines could be clogged or pinched shut. What you do is get two hose locking pliers. Go under your truck, they are two metal lines that turn into rubber and back into metal again farther down the line. First, checked for pinched lines. If none, find where the rubber hoses are, clamp them off, remove from metal lines and drain. Use garden hose to flush fresh water through. When water comes through at high pressure and pretty clear, it should be done. Reconnect hoses, top off radiator fluid and it should be fine.

Posted on Feb 21, 2009

MacGyver911
  • 42 Answers

SOURCE: Where is the blower motor resistor on a 2003 Chevy Malibu

Remove the shroud below glove box, 2 screws and a snap-pop fitting. Be careful of the courtesy light. Remove the blower moter and disconnect the purple/black power connector to it - - you'll need this extra room to work with. 2 more screws, same size, 6.5mm on mine, 7or 8mm on some others, that holds the blower motor resistor in place. This replacement part is less than 40 bones at most parts store. Unplug, replace, re-install, test and you're on your way with about 2 hours of slow paced effort in your own driveway. Typical cost at a garage - up to $400, what a sham.

Posted on Mar 19, 2009

  • 34 Answers

SOURCE: 7 wire harness going to blower motor resistor

There is an updated resistor/connector package. Very expensive from GM, try your local NAPA or other parts supplier for a replacement

Posted on Jul 09, 2009

  • 1 Answer

SOURCE: 2003 tahoe rear blower does not work---resister

got her fixxed in 10 min.----send me $12.99 and ill tell you how to fix yours at home . thanks

Posted on Oct 01, 2009

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1 Answer

Front blower motor quit working replaced ignition switch,control module,resister,and blower motor but still doesnt work fuses are all good where do i look next


normally it is the resistor,( relay) then resistor module then motor.
did you test the relay(I believe located under hood, relay/fuse center), If OK check plugs and wires for melting, damage and good connection, grounds should also be checked. Use a volt ohm meter to see if you are getting any power ti motor,etc.
the first link below gives good how to diagnose blower,press the helpful button
GM Blower Motor Resistor Diagnostics by Wells

DIagnose and Replace GM blower Control Module

http://www.gmcproblems.com/tsbs/Envoy/2003

Jan 30, 2016 | 2003 GMC Envoy Xl

Tip

No heat blowing


on most vehicles when the heat stops blowing it's usualy not a fuse or a relay but the blower motor or the blower motor resistor.
Here is a good way to check if it's the blower motor. Disconect the plug going in to the blower motor, Now run two long wires from the battery one on the negitive and one to the possitive. put power to the blower motor with theese wires, negitive to one post and possitive to the other .Does'nt matter what post you hook to the blower motor will just spin the opisite way. if the blower motor spins then you can rule out the blower motor and suspect the blower motor resistor is bad. to find the blower motor resistor all you have to do is follow the wirring from the blower motor. The resistor will be at the end of the wirring for the blower. The resistor will be mounted on the heater box near the blower motor and is usually held in by two screws.

on Feb 11, 2010 | Chevrolet Cavalier Cars & Trucks

1 Answer

GMC 2004 Envoy blows heat even with blower off ... Why ?


The relay in your blower motor is stuck on, there is a TSB for this issue. Replace the blower motor resistor and you'll be back in business.
How does the resistor get power if the fuse is pulled?
Replacing the resistor will cure both problems. TSB is a technical service bullitin seen below
Subject:HVAC Blower Motor May Run Continuously After Vehicle is Turned Off (Replace Blower Resistor Relay)Models:2004 Chevrolet Avalanche, Silverado, Suburban, Tahoe, TrailBlazer, TrailBlazer EXT2004 GMC Envoy, Envoy XL, Sierra, Yukon, Yukon XLwith Manual Control HVAC (RPO CJ3)Built Prior to August, 2003

Jun 04, 2013 | Cars & Trucks

1 Answer

2003 chevy silverado blower motor wont work i tested blower motor it works i just replaced the resistor and still dosent work, i also checked the fuses and the are ok please what else could it be


Is the blower motor not getting power or ground ?
There are two fuses that power the HVAC control module. The module controls the blower motor processor and the blend doors.
Have you tested the module and processor ?
You may need a shop manual for the wiring diagrams and procedures.

Jan 23, 2013 | 2003 Chevrolet Silverado 1500

2 Answers

Front blower motor does not work at all with the heat or the a/c on the rear motor works fine. I have changed the relay and the fuse but it still doesnt work i wanted to know if its the blower motor or the...


There are the only three items remaining in the circuit. It could be Motor, resistors or on/off switch.
To test blower run a pair of jumper wires from battery to motor terminals and she if it runs .
Switch is easy : remove it from its connectors and jump the wires and see if it runs the motor.
Resistors your gonna ned shop manual fro to know the value of each speed so you can test them with an ohm meter. Good luck

May 25, 2010 | 2003 Dodge Durango

1 Answer

I have a 2003 Chevy Tahoe . The heater and a/c fan only works on the highest speed #5. How do you repair this problem?


Check the blower motor resistor.It is on the passengers side by the blower motor under the dash.The resistor is connected to the blower motor and controls the blower speeds.They are known for going bad.Also check the connectors because they get hot and will melt.If they are melted then you will have to replace the connectors.You can get these from the dealership.Replace the blower motor resistor too.Hope this helps.Good luck.

Mar 16, 2010 | 2003 Chevrolet Tahoe

2 Answers

2005 tahoe no air blowing


as long as all the fuses are good.. its probably the blower resistor/module... located next to the blower motor under the pass. side of the dash..

Oct 13, 2009 | 2005 Chevrolet Tahoe

2 Answers

2003 Chevy Trailblazer my AC blower won't turn off!


you have a short to power which will cause it to stay on constantly check your blower motor resistor pack to ensure that it is working and check the wires going to the blower to make sure you have a power and a ground

Jun 29, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

03 chevy tahoe


There are seperate blowers for the front and rear air. It is most likely either your blower motor or the resistor, both located under the passenger side dash. I got a blower from a salvage yard for $25, But ended up having to get the resister from the dealership for about $130. Hope this helps.

Dec 06, 2008 | 2003 Chevrolet Tahoe

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