Push button 4 wheel on a 97 questions

tfpary · August 21, 2003

Geez, I should know this but- on my 97 Sub with the pushbutton 4 wheel, does it have looking hubs in the front? I have taken the wheels off once or twice, but never really paid any attention. After looking at my service information, it looks as though the axles are disconnected inside the front diff, and the axles turn all the time.

Can somebody confirm this?

Thanks yet again!

tad

MCourson · August 21, 2003

Im almost certain that you have hub actuators in the front hubs that engage when you put it in 4.

99-2door · August 21, 2003

No, the hubs are engaged all the time on your 97 4x4. The axles always turn and are engaged in the diff when 4x4 is engaged, on floor shift or pushbutton trucks. It has been that way since 88 on 1/2tons a few years later on the heavier trucks.

MCourson · August 21, 2003

Ok then what in the hubs is everyone with later K trucks having problems with that do not allow them to go into 4WD? I thought it was the hub actuators.

99-2door · August 21, 2003

Ok then what in the hubs is everyone with later K trucks having problems with that do not allow them to go into 4WD? I thought it was the hub actuators.

Err...I should have said 88-98. I am not really sure abou the NBS. The big problem with the 88-98 was the 4wd actuator in the front diff. The later trucks such as my 99 Tahoe have a fix for this and it is available for the others as well. Somebody chime in about the NBS trucks.

MCourson · August 21, 2003

Ok then what in the hubs is everyone with later K trucks having problems with that do not allow them to go into 4WD? I thought it was the hub actuators.

Err...I should have said 88-98. I am not really sure abou the NBS. The big problem with the 88-98 was the 4wd actuator in the front diff. The later trucks such as my 99 Tahoe have a fix for this and it is available for the others as well. Somebody chime in about the NBS trucks.

Thats what it was thanks. Some how a wire came off the transfercase on my friends 95 k1500. It would go in lo gear but the front tires wouldn't spin. I guess it was the actuator wire because once he found it and plugged it back in all was well.

chevy38fan · August 21, 2003

Ok then what in the hubs is everyone with later K trucks having problems with that do not allow them to go into 4WD? I thought it was the hub actuators.

Err...I should have said 88-98. I am not really sure abou the NBS. The big problem with the 88-98 was the 4wd actuator in the front diff. The later trucks such as my 99 Tahoe have a fix for this and it is available for the others as well. Somebody chime in about the NBS trucks.

Thats what it was thanks. Some how a wire came off the transfercase on my friends 95 k1500. It would go in lo gear but the front tires wouldn't spin. I guess it was the actuator wire because once he found it and plugged it back in all was well.

Whoa!!! same thing happened to me, basically, except the stinkin' thing somehow got the wires shredded, and they were still touching, and touching each other so I blew like 5 fuses trying to get it out of 4LO, and had to drive like 50 miles that way

99-2door · August 21, 2003

Yeah during our big ice storm a couple of years back, I had a 95 Ext. Cab Z-71. The second day of no electric power in the county my actuator went bad. Luckily I was able to get one the only day the snow let up. The old style was a type of heating element that made the actuator expand and latch up the diff. The newer style is a mechanical eletric motor (if that makes sense). Putting the newer style on the older trucks requires a harness too. Good investment though on a truck you are planning to keep around.

sonjaab · August 21, 2003

99.......You are correct..........I have read over at www.plowsite.com

of some of the guys changing their old style accuators (spl) with the

newer design ones. Only hard part is changing the wiring around.

I had 2 go bad on me...1 in my 90, and 1 in my 94. But not in my

97 or 01 ! ...................geo

99-2door · August 22, 2003

Yeah , I am not sure what year they started putting the new sty;e on at the factory. I have seen trucks as late as 98 still have the old style, my dad's K3500 had the newer style and it's a 94 (I think this may be due to the 3500 because my brother had a 95 K3500 SRW that had like the new style too).