Hello, my name is Ryan. I am new here I have a 2008 GMC Sierra that i am having some unknown issues with today. I bought the truck about 6 months ago and it has been a great rig. however this morning i got up to get to work and the speedometer wasnt working, the shift indicator wasnt working, the volt gauge read high, the oil pressure read high, the temp guage never moved, and the air bag light was on. truck drove fine besides all of that. a co-worker of mine said i have to replace the guage cluster but i do not know if that is true, anyone else have this happen or know what to do to fix it? Thank you much!!