96 tahoe

Hi all i have a 96 tahoe 4 door 4 wheel drive. with manual linkage 4x4 shifter. recently the front axle would not disengage, i thought it was the actuator on the front diff so i replaced it while i had it out i checked that the fork in the diff was functioning properly and it is ( press it in...

I have an issue with dtc p0122. 96 Tahoe, 5.7L, 4x4. I have tried all that I can to figure this one out. The truck runs like crap, stalls, no power, trans shifts very hard into 2nd gear are the major symptoms. I have replaced the tps twice, done the routine voltage checks, looked for opens...