The manual says it is recomended to leave the stabilitrac system on for normal driving conditions ( but there are only 2 buttons with lights the all wheel drive and the bottom button 4 LO which i know not to use unless i'm towning ect) the top button called the stabilitrac buttom has no light??? So should I be driving with the all wheel drive button on and then what do i do with the top button??????? please help!!!!!!
SOURCE: 1999 Chevy 4x4 engaging
Check the solenoid at the front axel. This is a rather common prob. First check that power is at the axel, got power, clean and put it back. Please do not even look at the tranfer case! At worst you may need to replace the axel solenoid! Frankster016
SOURCE: 1998 Chevy Blazer 4x4, $ wheel drive won't work (both 4hi & 4lo )
Reset the computer by disconnecting the battery. This should solve this. nutetral is for the four lo only to engage.
Mike
SOURCE: 1996 Chevy 4X4 Problem with Transfer Case & Transmission?
check vaccum actuator on front diff?use vaccum gauge should be 25 to 30lbs to open had same problem 94 gmc sierra ext cabb 4x4 5.7 ordrive tranny
SOURCE: stuck in 4 wheel drive and wont come out.
hey there i cant tell you what you are missing but i can tell you how to disengage the front wheels . ok you have a vacum line that runs right under the battery and a line that comes up from the front diff. to the same place ( you may have to remove batt and batt tray to get full access to this) un bolt it and temporaly put batt and batt tray back in start it up and decompress this and see if it comes out .... you should here clunking noise if it goes back in ... if thats the case just pull that big vaccum line off .... to test get all four tires off the ground and have some one put it in drive but dont hit the gas it should turn on its own ...if that dont work check the cable that runs down to the differental
SOURCE: 2004 silverado 4 wheel drive does not work, 4
1. Inspect Transfer Case Control Module (TCCM) and encoder/motor wiring, terminal contact, grounds.
2. Install updated TCCM calibration.
3. Inspect for TCCM water intrusion.
4. Replace transfer case encoder/motor.
1. Check voltage on pin A, Light Blue wire at the engage switch.
2. The voltage should remain near 1.0v with no buttons pushed, compare to the value on the scanner when the problem happens.
3. Back close to the switch by hand and check for a glitch.
4. Wiggle tug test harnesses at the switch and TCCM.
5. Check terminal to pin grip.
could be your transfercase control module locater under drivers side of dash. or the encoder motor
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