2008 GMC Yukon Denali

[Kiadra]

Hello,

I recently just got the 08 Denali about 5 months ago, in which I'm making payments on it. I haven't been able to get the truck to start up now going on 3 weeks. I contacted the dealer and the leasing people about what's going on, and they still want me to make payments on something I cannot drive. I went to get gas from a gas station then drove a total of about 5-7 miles, and parked into my sister's yard which is kind of down a slight hill. I then cut my truck off to open the liftgate, and went to try to start the truck when all I heard was a sputtering noise and I the truck started to cut off. Then after that it just started to make a click noise when I tried to start it up again. I replaced the battery and bought a new starter but still will not start up. It sounds like the clicking noise is coming from the starter still, but I then opened the fuse box and the starter relay fuse was blown so I replaced it and still nothing. I cannot figure out what the problem is, but everyone else keeps telling me that my engine is locked up, it turns a little by hand but not all the way.. Not to mention that the truck didn't run hot or anything, just only a message popped up saying service traction control, service stability system... CAN SOMEONE PLEASE HELP ME, I'm a woman but I'm willing to do the job myself if it can be fixed..