How do I put the 4 wheel drive into gear on a 2500 hd silveraldo

SOURCE: 1993 Chevy 1500 pickup 4-wheel drive

I replaced the malfunctioning “thermal actuator” with the “Warn” Vacuum actuator setup, it’s been working great for about 7 years now, simple install, if I remember correctly, it was about $150.
That’s what engages the front diff into 4wd.

SOURCE: 2005 chevy silverado 1500, service 4 wheel drive, gears

Sounds like a bent fork in the transfer case. It is a common problem with your truck. The transfer case is a np236. If it just recently started doing this, the rebuild will cost around $800. If the 4wd has been acting up for a while, the planetary will probably need changed, which is another $200.

SOURCE: 2004 Chevy, HD 2500, roaring in front end

need to check wheel bearings

SOURCE: 1999 tahoe 4 wheel drive trouble light is on. Wont go into 4

my 2000 chevy tahoe 4wheel drive light indicator wont stay on even when i tryto angage automatic 4 wheel

SOURCE: 2002 2500 silverado - 4-wheel

well typically is there is a noise when making a turn its caused by a bad cv-joint but if your having problems with the 4 wheel drive i would look at the linkage to the transfer case and make sure there is not to much play or bent or broke rods and stuff.