I took my 1996 Chevy suburban in and was told my transmission was going out. It was so I went through with it, had to use a credit card he then asked for another and kept adding new issues. They kept my vehicle for 3 weeks, causing me to Uber everyday. A couple weeks after I received my vehicle the check engine light came back on. Took it in and they said it was fine, cleared the dark light. And tried to sell me on rear end parts, brakes and a few other parts. Light is back on and I've been through 2 jugs of coolant already. Why won't they honor my warranty?