I replaced the switch with no luck will turn on/off by itself .what to check next??
Heater element . CHEVY GMC SEAT HEATER TROUBLESHOOTING YouTube
Testimonial: "The issue is it not consistent tho when there on the both heat up just fine I dont think its a element issue at all as like I said it does work on one trip but not on another"
"The issue is it not consistent tho when there on the both heat up just fine I dont think its a element issue at all as like I said it does work on one trip but not on another.meaning this issue is once in a while not every trip this happens.and a clicking is heard passenger side dash area
Then it's probably the Driver seat module .
The seat heater elements are controlled by the driver seat module using inputs from the door modules through Class 2 serial data circuit messages. The driver seat module controls the voltage supply and the ground circuits to the seat heater elements. When a heated seat function is commanded active, the seat module will switch battery voltage to the heater element supply circuits, and ground is provided through low side drive control circuits. During heated seat operation both the seat back and cushion heater elements are supplied battery voltage. The seat module grounds the appropriate control circuits for back only or back and cushion heating modes, and opens or closes the active control circuits as necessary in order to maintain the desired seat temperature. The seat module relies on inputs from thermistors located in the driver and passenger seat backs to control heated seat temperatures. The thermistors are 2 wire sensors supplied with a 5-volt referenced signal circuit and a low reference circuit from the seat module. Resistance through the thermistors varies with temperature causing the heated seat sensor signal circuit voltage levels to decrease as the seat back temperatures rise. The seat modules allow heated seat operation only while the engine is running which is determined by a Class 2 serial data circuit message from the powertrain control module.
Having the vehicle tested for DTC'S - diagnostic trouble code's would be the first place to start . An not auto zone or using a code reader as these can not check code's inthis module.
yea kinda though you were going to say that .thanks for replying
DTC B1770, B1775, B1780, B1785, B1790, B1805, or B2415
DTC B1825
DTC B1850, B1860, B1960, B2355, B2365, or B2375
DTC B2425 or B2430
DTC B2435 or B2440
DTC B3941
DTC B3962
the module is the drivers master switch control correct?? or under seat box??
under the seat , you could test power an grounds
For that module , you can find free wiring diagrams herehttp://www.bbbind.com/free_tsb.html
Do you know how to do a loaded circuit test?
Enter vehicle info. then under system click on interior & driver amenity . under subsystem click heated seats . Then click the search button ,then the blue link .
ok that sound god thank you Ill give it a go thanks again very appreciated
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SOURCE: heated seat not working
The heater element for the seat is broken or damaged....It will need to be replaced....The blinking light lets you know there is a problem and does not let power flow to the element. This is for safety reasons to prevent short out or even fire.
SOURCE: Drivers side heated seat not working what can I
check the fuse on the panel, the fuse panel are located in the driver side right by the panel,and check the wires under the seat.
SOURCE: 2005 gmc sierra 2500hd heated seat turns off
you have a couple of problems first of all your drivers sd=ide heated heat pad is probably faulty, for your heating problem you may have to get the hvac doors recalibrated.
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