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Where is the ru866 module located in 1998

Where is the ru866 resistor module located in 1998 Silverado? It is part of the interor ventalation system.

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Where is the drl module located on a 1998 chev silverado 4x4


Under the dash behind the main headlight switch.

Oct 11, 2012 | Cars & Trucks

1 Answer

2001 Chevrolet Silverado 1500 security light on, daytime running lights not working, dome light, interor lights, and cargo lamp all quit working at same time.


The security light issue is very common on GM vehicles. This is from a break in the communication between the key, igniton, and TDM (Theft Deterrent Module) computer. The hard part is figuring out which one is failing. They is no way to know other than to just start switching out old parts and putting in new ones. This is expensive and all parts must match for the security to work. There are ways to bypass the system Other than that, you'll need to take it to a dealer to get FIXED. If you want to bypass the system, you can go to this link for all the info you will need. Ive bypassed dozens of these things and its a pretty easy DO IT YOURSELF fix. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Jun 06, 2011 | 2001 Chevrolet Silverado 1500

1 Answer

2006 chevy silverado blower fan not working right. The control does not work. It still blows on low but nothing else. Cut key off and fan still blows.


With one speed working it is more than likely the blower motor resistor (20 dollar part) located in the area of the blower--needs air to pass by it as it gets rather hot), or at worst case the Module. This part (Blower control Module) is a bit more expensive. Try the resistor first, you can test its resistance at different speed settings to see if it is functioning as it should.

Aug 22, 2010 | 2006 Chevrolet Silverado

1 Answer

Air and heat dont blow hard any more


Sounds like you have a bad blower moter resistor.
The resistor assembly is located on the heater box module
under the dash near the blower moter. Hope this helps.

Feb 19, 2010 | 2000 Chevrolet Silverado

3 Answers

On my 2004 gmc sierra the blower motor will stay on with the key out. is it the resistor or a reley. how to find it


This is definitely the Relay which is part of the Blower Motor Resistor Module. The Engineers designed it to FAIL when the Return Spring breaks. The Relay Contact is only utilized for the Highest Speed, The armature (Movable Contact) makes connection due to gravity when the Spring Fails. The Relay is mounted UPSIDE DOWN and was designed into the module that way. It is not independently serviceable!

Take it from me as my 2004 Silverado has gone through 3 Resistor Modules and 1 Blower Motor. Michigan winters are relatively cold!

Jan 01, 2010 | 2004 GMC Sierra

1 Answer

Where is the blower resistor located on a 2008


The blower control module also known as the blower motor resistor is on the passenger side of the firewall in the engine compartment near the blower

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Nov 12, 2009 | 1998 Pontiac Bonneville

2 Answers

Blower motor continues to run when vehicle is off


Your problem is the Relay which is encased inside the Heater/AC Resistor Module. This is a very common problem with GMC and Chevy Trucks. The Relay's return spring fails and the relay is held closed by gravity. The only fix is to replace the Resistor Module. I have a 2004 Silverado and have replaced the Module 3 times and the Blower Motor twice. The Orange wire feeding the Module is always Hot (12V) and feeds the Relay Contact for Highest Blower Speed. Hence the Blower runs all the time even with the Key off and removed.

Oct 02, 2009 | 2003 GMC Envoy Xl

1 Answer

Interor reading or map lights flicker on and off when going over


you willprobably find one of the door switches is faulty

Jan 24, 2009 | 1998 Oldsmobile Bravada

1 Answer

1998 jeep grand cherokee


Under the glove box beneath the dash the resistor should be screwed into the heater housing.

Jun 19, 2008 | 1998 Jeep Grand Cherokee

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