Barry Hanback

It just does it in 4 hi cause the incline is grassy and too steep to try in 2 hi. 4 lo it just buck jumps and goes dead. It won't even hold back on a grade in 4 lo without bucking bad.

My Sierra, when climbing a steep incline suddenly goes out of gear, engine revs and truck rolls back down. I tried several times with the same results. No codes. I turned it around and backed up the same inclines several time with no issues. Trans is a little overfull of fluid. Also I tried 4 lo and the truck started buck jumping along and died. I will not run smooth in 4 lo, just bucks along till it dies. Still no codes. Any ideas?? Thanks in advance.

I have a 2013 Sierra with the 5.3 and it sometimes does that and will die if I try to accelerate. I turn it off and it starts back and runs fine. I put a new fuel cap on it, and thought that fixed it, but it didn't, I'm now suspecting that the purge valve is sometimes leaking. I had one go bad on my 2015 Cadillac SRX and it acted similar to that, and a new purge valve fixed it. I'm going to test my valve before replacing it. You can search how to test the purge valve and get great instructions. It's simple and easy to test. I do not get the purge valve code on my truck, but sometimes it says to tighten the fuel cap. I don't know if they throw a code till they're really bad. Just my thoughts, I don't like to throw money at a problem just to see if it does it. I try to troubleshoot first.

I have a 2013 Sierra crew cab SLE with remote start wired but didn't come with the remotes, or it turned on. I have two remote start remotes that when start is pressed the lights come on, but of course, it will not start. Is a dealer the only way to get the code to turn it on? I don't like dealers since I've had not so good experiences with them.