2nd Gen Non-Engine/Transmission Trying to turn 4wd light off

[VolsFan]

Hi, the last light I need to turn off is my 4wd light, it flashes intermittently in 2wd. 4wd engages perfectly and shifts into 2wd fine. The mechanic I had the truck at for almost 2 wks to turn off brake/abs light didn't correct this, just wanted to wash my hands of that guy. Trying to figure this out,I took what looks to be a sensor out and it looked clean, what else could cause this, do I need to replace the sensor?

 

[VolsFan]

Sorry the picture didn't turn out as well as I'd liked it, but it's the sensor to the left of the vacuum lines on the axle

 

[SnoKing]

Here is what the manual says.

Indicator Stays Illuminated with Four-Wheel Drive Mode Not Selected.

1. Disconnect and and isolate the battery negative cable. Disconnect the engine wire harness connector for the four-wheel drove switch from the switch connector receptacle. Check for continuity between the ground circuit terminal and the 4WD switch sense circuit terminal in the four-wheel drive switch connector receptacle. There should be no continuity. If OK, repair the shorted 4WD switch sense circuit between the four-wheel drive switch and the instrument cluster as required. If not OK, replace the faulty four-wheel drive switch.

I would just unplug it and test drive it to see if it flickers! If it does not I would remove the switch and plug it back in and tie it back and test drive again.

Switch is 19.09 at NAPAONLINE.

http://www.napaonline.com/Catalog/C...Indicator-Lamp-Switch/_/R-ECHFWD25_0306281797

Good Luck. Chris

 

[VolsFan]

Thanks! What a no brainer, embarrassed I didn't think of that! Going to run it this evening and see if it goes out with it unplugged.

 

[VolsFan]

4wd light stayed out with the sensor unplugged. Going to get a new sensor from Napa Monday. Thanks!