Extremely dependable truck. Have had it for 6 yrs it had 124, 000 when i got it. Has over 188,000 on it now. I put a set of tires on it. I use synthetic oil in it, K&N filter Service it regularly Have had to replace turn signal switch and have a/c fixed and one oxygen sensor replaced that's about it. I haul with it. I load it and it keeps on going. Had a 91 C1500 before it, it had 170000 on it, also very dependable. Only reason i sold it was to by this Z71. The other was a 2wd. What can i say. Most dependable, longest lasting trucks out there!