Been lurker for a little while and decided to join to gain some more knowledge.

I have a 07 Suburban LT and I am having some issues with it. I recently been having a grinding noise while cranking usually 50% of the time. I did some research here and found it could be a number of things from a gasket to my A/C.

I also have P0174 error code and have found it may be a MAF issue or a vacuum leak.

Then yesterday I got the stabilink error after a rough startup and the truck drove like crap when turning but was fine driving straight. I like to do some work on my own so I am looking for some advice on what may be the issue. I am not sure if the problems are all related or they are there own separate issue.

Thanks in advance.