97 chevy k1500 wil not shift into 4 high, just 4 lo and 2 hi

Chevrolet Suburban Questions - 4 wheel drive does not ...

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CarGurus4 wheel drive does not work - When I put the Sub in 4 wheel drive, low of high, ...Asked by Robert_Holland_073 Dec 17, 2009 at 04:06 AM about the 1994 Chevrolet Suburban K1500 4WD ... it can seize up and then the trans case may ingage but the hubs won't be locked in so it ... 1999 Chevrolet Suburban K2500 LT 4WD.

Chevrolet Tahoe Suburban 4 Wheel Drive Indicator Lights - Car ...

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Oct 2, 2007 - 31 posts - ‎19 authors
My 1999 Tahoe (odo reading 137,400 miles) won't go into 4 wheel drive. .... I have a 98 suburban 1500 4x4 LT 5.7 L with 165,000 miles ... I recall once forgetting todisengage 4WD and I could feel a terrific binding when I ...
Step by Step Troubleshooting 4wd 4x4 88-98 Chevy GMC ...? 21:32https://www.youtube.com/watch?v=Su9Dkrfd_ZgJan 20, 2014 - Uploaded by rwdellingStep by Step Troubleshooting 4wd 4x4 88-98 Chevy GMC Truck. rwdelling .... Mine is acting like it is NOT pulling with the fronts,won't engage. ... Have you ever adjusted or the shift cable on your 1500 Chevy ... GM 246 transfer case, 2000 Chev Suburban- Duration: 20:09. by spelunkerd 286,045 views.GM Troubleshooting Part 13 - 4WD vacuum actuator & cable ...? 5:11https://www.youtube.com/watch?v=CbEF6PyJdU0Feb 3, 2011 - Uploaded by mr diyguy123I tacked on this video about the 4wd sys. ... I have a 1994 ChevyS10 ... My S10 won't let you go to 4 LO when your in gear. ... the front end to keep them disengaged. when you put it in 4wd, the vacuum actuator pushes a gear ...

Are putting the vehicle into 4H then shifting the trans into neutral then pushing the 4L button? If so there may be a controler behind the dash. I can't remember on a 97 for sure but I am almost certain there is a control module behind the dassh switch.

97 c1500 or k1500,. not told. just 1/2 ton sure. K1500 is 4wd got that?
the 4wd sensors are not the same. ok? no engine told either, guess 4.3L only
4L60-E; 4 speed Automatic trans. or 4L80e
that is and E box, electronically TCM shifted.
and the speed sensors must all work!! must !
it it can not shift correctly.
that is a fact.
you replaced 1 but never say the speedo was fixed, yes the speedo matters
OD is 4th gear,
the TCM can be scanned, why not do that?
stuck in 2nd gear is common for TRANNY LIMPHOME
it does that when sensors or solenoids go bad.
making car safe to drive to a shop only that is all limphome means just that.
beats a 100% dead car no? for sure.

sensors all 2, input speed and outputs speed, and if 4wd OSS is on the rear of 4wd transfer care, moved, for 4wd.
solenoids not bad in box. 1>2 and 2>3 shift and 3<4 shift.
scan the TCM.

the ECM on the car 4.3L runs the Tranny (TCM logic) 12 connection.
so not scanning the ECM OBD2 port ,you fully miss the boat and it sailed
the good ship of facts gone. DTC errors for sure missed.

it could be one of 3 things, it could be a vacuum leak or the vacuum actaulor could be bad they are usually under the battery tray if that don't do it check the vacuum line under the truck for oil in the line if there is it will be the vacuum switch on the top of the transimission.

Check the 4WD fuse and the illumination fuse in the I/P fuse block. Also check the Transfer Case Switch and the Front Axle Actuator for a fault. I would say that the Front Axle Actuator is the most common failure. I think there is even an updated actuator asy available. Check with you local chevy dealer for price and availability.

The major components to this system are a shift control motor that is mounted to the transfer case, and a shift control module that is behind your center console. since the transfer case is still shifting into 4wd lo, the shift motor is still moving somewhat, so the most likely cause is the shift control module, but there isn't an easy way to troubleshoot between the two...

That depends a lot on how your truck is equipped. GM uses several different 4 wheel systems including AWD, Part-Time 4WD, Full-Time 4WD, and ON-Demand AWD. Then there is another version used on some trucks that is a combination of 4WD and On Demand AWD. - it gets a little confusing but each system as slightly different charachteristics.

Genericly speaking, if you have the push-buttons on your dash that say "4-HI", "4-LO", and "2HI" and/or Auto-4WD , the transfer case has an electronicly-controlled stepper motor which shifts the transfer case into the selected mode. An electric solenoid/actuator then engages/disengages the front differential for 2-Wheel or 4-Wheel modes. One push of the button and it shifts the transfer case and engages the front differential.

That's much easier than the old days when you had to stop the truck, get out (Sometimes in the middle of a big mud hole) and lock the front hubs then get back in and play with the lever in the floor to get the transfer case to shift into the desired mode.

If it's a shift - on - the - fly 4wd, then call your local Chevy truck dealer. There was a recall on the Electronic 4wd on these trucks. (common problem). Try this just for the heck of it. With the truck stopped, put in 4hi/lo, then put it in reverse. Back up slightly, (about 5ft or so) and then put it in drive (or first in a manual trans) and go forward. Did it lock in? If it locks in but won't unlock, try backing up to unlock. Hope this helps.

try putting in nuetral and then shift into high gear . if still does not work sounds like the 4x4 acctuator is bad

Just to clarify, the "transmission" is not stuck in 4-Lo. It is the "transfer case" that is attached to the transmission that actually engages the 4-Hi and 4-Lo modes. To properly shift your vehicle into 4-Lo, you know that you have to shift the transmission into neutral and slow down to less than 5 mph. Once your vehicle slows down to this range, your can switch your transfer case into 4-Lo mode. Due to the inner workings of the transfer case, the actual shift into 4-Lo may take a few seconds to complete. This is normal and does not signify that there is an issue. All transfer cases that have 4-Lo mode will act this way regardless of the make or model. To make a long story short, to shift out of 4-Lo you must follow the same steps that you took to shift into 4-Lo, just in reverse order. Switch the transfer case to 4-Lo mode if it isn't already there. Slow down to less than 5 mph (your vehicle must be moving, though). Then, shift your car into 4-Hi or 2WD. Give your vehicle several seconds to complete the shift. The transfer case indicator light will flash until it is complete. When it does complete the shift into the new gear mode, you will most likely hear a "clunk" (the range sleeve inside the transfer case disengages from its mating spline) from under your car. Again, any transfer case with 4-Lo (regardless of make or model) will exhibit this same noise. This should help you get out of 4-Lo. It is good practice to shift your car into and out of 4-Lo at least a few times each year to keep all of the splines free of corrosion and build-up. Based on the age of your vehicle, your transfer case may also need a complete flush and some new transmission fluid. Hope this helps.