Question about 2004 Chevrolet Silverado 2500HD

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Where are the heated seat thermistors on a 2004 chevy silverado?

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

  • 328 Answers

SOURCE: 2004 Chevy Silverado Heater Switch

It could be the switch or your blower motor resistor.

Posted on Jan 16, 2009

  • 10 Answers

SOURCE: 2004 chevy. Heated seats will not stay on.

See GM TSB 05-08-143-001, If you have Adjustable pedals, especially if they dont; work with the memeory buttons, but function with thier own buttons. Its the Brake Pedal Position Sensor is shorted and mesing up the seat module which controls the heaters too. My 05 Suburban had the same issue.

Posted on Dec 11, 2009

  • 104 Answers

SOURCE: I have a 2003 Chevy Silverado 2500HD. When I

heated seat eliment needs replaced. or unplog

Posted on Apr 01, 2010

BeninVa
  • 389 Answers

SOURCE: How do I replace a passenger side outside mirror

Hello, my name is Ben. This is a very easy repair for any do it your-selfer. There is a plastic triangle shaped piece on the inside of the door at the top of the door panel. Carefully pry it straight our using a small screwdriver or putty knife. Now you can just unbolt the old mirror and bolt in the new one. I hope this helps you with your repair.

Posted on Jun 05, 2010

  • 1 Answer

SOURCE: 2004 Chevrolet Silverado 2500 HD heated seats

pull the fuse for seat heater inside dash pael on drivers side

Posted on Jun 20, 2010

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My heated seats in my 2003 chevy silverado 2500 hd turn on to high automatically when i start the truck. how do i fix this or atleast unhook them untill winter?


well you can't just pull the plug or unhook the seat from below,, the motor for adjusting the seat seems to be on the same circuit, unless your the only one who drives the vehicle, then you could yank the circuit breaker for the seats , what it sounds like to me with the heat issue is that you have a shorted element in the seat itself, and they are pretty lame as heaters go, Chevy sells a replacement which consists of a piece of tape with the element inside of it, and you have to remove the covers and weave this replacement through the seat,, Ive only done one, but you could see all the burn spots on it,

Jul 08, 2011 | 2003 Chevrolet Silverado 2500HD

1 Answer

My 2004 chevy silverado heated seats will turn off automatically after 3 seconds of use. What is wrong and how do I fix it?


you are sitting on a toaster, note how a toaster shuts itself off and kicks the toast out. same type of circuit protects the seat's toaster from running all the time, burning the seat and occupant, and keeping the nichrome wire from burning itself through during warranty period. the equivalent to the toast darkness control is bad and needs to be replaced. be it called a thermostat or circuit breaker, most likely the seat will have to be pulled out and that part replaced.

Jan 06, 2011 | 2004 Chevrolet Silverado 1500 Crew Cab

2 Answers

I have a 2004 Chevy Silverado. The heated seat on the drivers side does not work. When you push the button to turn it on, the lights come on briefly then turn off.


Would you say it stays on about 30 seconds and does the passenger side do the same thing? If possible retrieving the codes will narrow down the search for a correct solution.If the passenger side is ok we may be able to eliminate the passenger side as bring part of the problem.Please advise so will know which way to go with your solution.


Condition/Concern:
Driver and passenger heated seats inoperative or shut off in 30 seconds. There will be DTCs B2435, B2440, B3606 and/or B1825 set in the Drivers Seat Module. The adjustable pedal position sensor, seat recliner position sensor and both heat seat thermistors share the same 5 volt reference internal to the Drivers Seat Module. A fault in any of these components/circuits can make the heated seats inoperative or shut off in 30 seconds, as well as, the seat recliner and/or adjustment pedals may move in short increments when operated. A fault in heated seats, adjustable pedal or seat recliner will affect BOTH heated seats.
Note:: Even if the vehicle is not equipped with adjustable pedals DTC B3606 still may set.


To help isolate the area of concern use the Tech 2 or a comparable scanner and go to "Sensor Data" in the Drivers Seat Module. Monitor the following parameters for being out of range:
Recline Position- Normal range .39V-4.58V
Pedal Position (if equipped) - Normal range .39V-4.58V
Psgr. Seat Heat Sensor- Normal range 1V-4V
Drvr. Seat Heat Sensor- Normal range 1V-4V
If a parameter is found to be out of range inspect circuits for any opens, shorts to ground, or voltage. If none found replace the suspect component.

Please be aware of the following common areas of concern:
  1. The adjustable pedal position sensor internally shorted pulling the 5 volt reference low. Disconnect the adjustable pedal position sensor and see if the heated seats start working correctly, if so replace. Note Important:: The APP (Accelerator Pedal Position) sensor is NOT the adjustable pedal position sensor. Make sure the correct sensor, adjustable pedal position sensor, is disconnected.
  2. The seat recliner position sensor internally shorted pulling the 5 volt reference low. Disconnect the recliner position sensor and see if heated seats start working correctly, if so replace.
  3. An open in either heated seat thermistor circuits (signal or low reference). The most common is the passenger thermistor where it passes through seat connector C305 pin "L" or "K" or C399 pins "R" or "G".
  4. A chaff to ground on either heated seat thermistor signal circuits. The most common is circuit 5475 black/red or dark blue shorted to ground in the passenger seat near the buckle. Note Important:: The heated seat thermistors act differently to "OPENS and SHORTS" than the adjustable pedal position sensor and seat recliner position sensor. The adjustable pedals and seat recliner sensors can be disconnected for testing of the heated seats. Where as the heated seat thermistor circuit must be working correctly before EITHER heated seat will operate. Disconnecting one thermistor, which may have a concern will not allow the opposite heated seat to work correctly, BOTH side must be operational before EITHER heated seat will operate.
Clearing DTCs
If DTCs will not clear when using the Tech 2 or comaparable scanner after a repair has been made, try operating the device in which the repair was made. Example, if a repair was made to the passenger heated seat thermistor circuit, the DTCs may not clear unless the passenger heated seat is operated.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

Nov 17, 2010 | 2004 Chevrolet Silverado 2500HD

1 Answer

Heated, power seats not working


Check wiring under the seat. Frequent habit of pushing things under the seat such as flashlights and tools etc and moving the seat forward and back sometimes pulls wires or breaks them.

Apr 07, 2010 | 2004 Chevrolet Silverado 2500 Crew Cab

1 Answer

I have a 2003 Chevy Silverado 2500HD. When I


heated seat eliment needs replaced. or unplog

Apr 01, 2010 | 2005 Chevrolet Silverado

1 Answer

2004 CHEVY MALIBU HEATED SEATS TURN ON WITHOUT


The switch need to be replaced. This is a common problem. Understand that he switch is the only breakpoint in that system. If the seat is getting hot without the switch being pressed, there is a short in the switch, thuis the necessary replacement.

Mar 21, 2010 | 2004 Chevrolet Malibu

1 Answer

2004 Chevy diesel with heated leather seat that quit working.


It is a fuse. Go into your owner manual to locate the fuse or just look in the fuse panel as they are labeled.

Mar 02, 2010 | 2004 Chevrolet Silverado 2500HD

2 Answers

2004 chevy. Heated seats will not stay on.


See GM TSB 05-08-143-001, If you have Adjustable pedals, especially if they dont; work with the memeory buttons, but function with thier own buttons. Its the Brake Pedal Position Sensor is shorted and mesing up the seat module which controls the heaters too. My 05 Suburban had the same issue.

Dec 10, 2009 | 2004 Chevrolet Silverado 2500HD

1 Answer

Chevy Silverado Seat Heater not working


The most likely cause is the seat heater elements, they either have excessive resistance or are open - id recommended replacing both driver side element - upper and lower

Jan 17, 2009 | 2004 Chevrolet Silverado 2500HD

2 Answers

2004 Chevrolet Silverado 2500 HD heated seats


pull the fuse for seat heater inside dash pael on drivers side

Oct 22, 2008 | 2004 Chevrolet Silverado 2500HD

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