Tachometer, Speedometer,and Shift Indicator do not work

What is your question?

Motor Runs Good . But the transmission doesn't. It starts in 2nd gear then shifts into 3rd at 30 MPH. it will not shift into 4th or OD. Reverse work fine. A few days before this started ,I noticed that holding the throttle steady between 40 and 60 MPH It would feel like the Tork Converter Lock-up was kicking in and out. Engine RPM's would rise and fall 200 RPM's .I also noticed that I could simulate this same issue by slightly depressing and releasing the throttle. I don't hear any funny noises or notice any strange sensations except sluggish starting in 2nd gear. I have 3500 Mi. on re-man. transmission , fluid is nice ,clean and red . does not smell burned.

How long has your 1997 GMC C1500 had this problem?

2 weeks