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1997 Sonoma won't go into 4wd. When the 4wd button is pushed it
1997 Sonoma 4wd. When the 4wd button is pushed it won't go into 4wd. The 4wd light blinks and there is a noise like its trying to engage but it doesn't.
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If it has the push button controls on the dash I have had those fail frequently. A lot of times you may push the button and the light may blink and then still stay in 2wd. That switch is also the control module for the 4wd. If it is the know select you need to check for power at the actuator on the transfer case.
THE TRANSFER CASE MOTOR IS ONLY FOR 4WD LOW. That would have never been the problem as soon as you confirmed it shifted into 4wd Low. 2wd and 4 Hi work off of vacuum. You may have one or two issues. A vacuum leak up by the front axle that engages the 4wd HI or the sensors on the transfer case.
put in reverse get going 5-10 mph put in neutral then try to get out of FWD while still in motion.This doesn't always work but it eliminates a lot of possibilities.
For 1997 GMC Truck Sonoma 4WD 4.3L SFI OHV 6cyl the Flasher is located: * Front seating area, driver side, passenger side ofsteering
column, under dash, mounted near cigarettelighter. Optional mounting
location is under dash,on driver side of steering column Application: Hazard flasher
* Front seating area, driver side, passenger side ofsteering column, under
dash, mounted near cigarettelighter. Optional mounting location is
under dash,on driver side of steering column Application: Turn signal
Ive gone thru this THREE TIMES w/ my '99! Theres a thin, rubber vacuum hose that wears thin, gets dirt/oil/water in it & shorts a relay. The last mechanic replaced the hose w/ steel brakeline & Ive had no problems for 2 yrs.
Check the oil level in the shift on the fly (sotf) part of the axle thats the left of the front one - it holds about 1 pint of gear oil and gets missed at service time .
yea its not shifting again like before ? sounds like your transfer case solonoid has possably gone bad again .. these are a sometimes dont work item .. It is what shifts the transfer case into gear and it might be a little worn or weathered and not letting the switch kick it in gear all the way from the N position. thanks Jerry holler if you need more.
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