Recreational Vehicle Lpg Tank Valve/gauge problems of the 2012 Chevrolet Tahoe

Dash board cracked in 2 places over the last week. First crack occurred over the gauge clusters, and the second crack occurred over the passenger side airbag.

Dash cracked from corner of passenger side defrost vent to airbag, and again from the defrost vent to over dome over driver cluster and any thing wet can get into components of the speedometer and rest of stuff in there. Trucks never been kept in sun, and had one dealership already confirmed that its a defect in product not caused by elements or lack of care, or anything done to it. Its parked most times and it's getting worse, im handicapped and vehicle only used when im driving or in it. I'm not happy about this bc it's not like this was a cheap vehicle and im on fixed income, and paid cash and extended warranty will not cover cosmetic. Its almost splitting at top now on driver side to go around the front of dash. Also had to replace battery and alternater only at 50k miles and warning light never came on, noticed dimming of lights when applying brake pedal and while driving the voltage gauge kept going to 0 and back to 14 back and forth, got to dealer and again tried sending me home but finally tested original altenater and it wasn't working so replaced and cost me $100 but still no warning or engine light and then dealer had to tow my vehicle again bc system no updated found problem by another dealer, under coating coming off and rust on top by rack on roof on each side. This was a $68k vehicle and because of defects and not a recall we're responsible for half cost, dealers want over $500 for something that is a design or product of poor quality, this is how chevy/ gm buyers are treated when buying one of the top luxury vehicles. What company does this, I paid cash for this dream vehicle and the product is all over internet and lawsuits bc of product defect, cheap products used but sold as top of line. Wow.