Hey everybody, I picked up a '17 6.7 last month and have been loving it but have run into a little issue today that I need your help with. This morning the truck wouldn't start via the remote start.....the lights would flash green on the fob in an attempt, but then the truck would let out a single honk and the lights would go red. That was weird but no big deal, I walked my happy azz out there and tried to start the truck manually and it would just crank like half a crank and then stop...it did this two/three times, I got out, but then reached in and tried it one more time and it fired up. No slow cranking or anything like that that would indicate low batteries but IDK.....I'm still new to this platform. Now I'm at work and need to go get my kids afterwards, went to start it at lunch time and same thing......it does a half-azz crank and then quits. It has the "intelligent access" stuff with the push button start, so I can't even hold the key in the start position to make it try to crank longer lol. And being at work, I'm away from my tools to do a more proper diagnosis. Anyone out there experience a similar issue with a possible resolution?

Thanks a lot for any help!

 

may sound stupid and likely not the problem but takes half a second to rule out. Battery connections are solid and tight?

 

Yes they are, found a set of jumper cables and a co-worker going to help out here shortly.

 

Some vehicles sense when the starter doesn't have enough energy to spin the crank at sufficient RPM and effectively give up. You might have plenty of battery to run the electronics but not enough to turn the crank (at the current temperature) causing the computer to stop trying. But this is just a guess-- I wish you luck.

 

Found it.....loose ground cable on the driver's side chassis connection. Tightened it back up and good to go. Thanks for the help!

 

Same problem just appeared...where is this ground cable u speak of?