GMC SIERRA TRANSFER CASE ENGAGE

I Have Replaced Both Motors For The Four Wheel Drive System. With All Wheels Off The Ground, All Wheels Will Spin. When I Have All Wheels...

I Have A Sierra 1500 4wd And It Don't Work When U Push The 4 Hi Or Low Button Or The Anytime 4wd. It Does Not Engage When The Vehicle Is On...

I Replaced Brake Pads And Rotors And Spark Plugs And Wires On My 99 Gmc Sierra. Before I Replaced These Items Everything Worked Fine Now The...

For The Past Couple Months When My Abs Light Is On My Heat/ac Blower Won't Work And My 4 Wheel Drive Won't Work. The Light Does Not Stay On...

I Was Told That I Should Engage The 4x4 Every Couple Of Months To Keep It Usable. Is That True?