The TCCM for a 99 Jimmy is behind the passenger, right side kick panel. This is the panel under and to the outboard right side of the glove box. If sitting in the seat and you swing your right foot to the right, you hit this panel. Good luck!
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Question about 1990 C1500 ... I HEARD THAT THERE WAS A RELAY SWITCH INBEHIND THE GLOVE BOX. ... clicking sound coming from the glove box area of my1998 GMC jimmy. ... It also starts clicking when I turn off the vehicle. ... Mitsubishi Diamante · Mitsubishi Galant · Cadillac DeVille · Buick Century · Acura TL ...
use a scan tool yet>? see if there are DTC errors related?
alldata.com has the virtual FSM book. read that yet?
has full docs.
all it takes is the above schematic, and a $10 voltmeter.
guessing will probably not win.
wana test or gue$$
agree on the ignition issue. however there is an eight hundred dollar part that needs replaced. its behind the glove box. had same prob. there is an engineer that created a bypass for two hundred. u can find him online just google ignition bypass or along those lines. i took a risk n bought it and it works great. dont need those keys anymore either.
No there is not a fuse to the fan. There is a relay that is behind the glove box. A lot of times you can hit the dash beside the glove box and the fan will start running. This relay will need replaced and the fan will work.
This is something you can do yourself if you have ever worked on a vehicle before. The part you need is called a front drive actuator valve. It costs about $ 50.00, GM part # 15165891.
Here is some more infor about it:
Main 4wd Components: TCCM - Transfer Case Control Module - Located behind the glove box. This is the electronic 'brains' behind the shifting. Switch - The push button switch in the dash - driver input/indicator. Encoder Motor - Located on the transfer case - This is what actually shifts the transfer case, and tells the TCCM what position it is in. Vacuum Switch - Also located on the transfer case - This is what sends vacuum to the vacuum actuator (see below) when the transfer care is in 4HI or 4LO. Vacuum Actuator - Located under the battery tray - This is what engages or disengages the front driveshaft. Front Axle Switch - Located on the front axle - This is what tells the TCCM when the front axle is engaged.
If you want to try and replace it yourself, please let me know how it goes.
I have a 1998 GMC Jimmy SLT with same exact problem. I just determined exactly what it is today.
Here is what you should do:
1) Open glove box
2) Notice the u-shape mechanism that prevents the glove box from folding all the way down. (located near top left corner of OPEN glove box
3) Empty contents of glove box and then push up on U-shape and open glove box so that it hangs freely
4) Notice the wiring harness with a bolt in middle of it (located behind glove box)
5) To the right of the wiring harness is a small black box with a zip tie over it. This is the source of your problem. Just slide the zip tie to the right so that the box can then be pulled out.
This is your combination flasher for turn and hazard signals. My signals still worked while this annoying little thing kept clicking. The model # is GM11516051. You can find one on e-bay for at least 1/2 the price of the dealer's.