2017 Chevy Silverado Intermittent Starting Issue

[Ccote]

Hi all, 

I'm having a starting issue on my 2017 Silverado 2500 diesel with about 80k miles. Been happening for a couple months now. Sometimes it starts right up, other times it just clicks. Have brought it to our local shop a couple times now and they have been unable to replicate the issue - just starts right up for them. I have replaced both batteries and the starter, still having the issue. At one point we were able to get it started by wiggling some connectors, but that only worked once. The problem seems to be happening more frequently now and I keep getting stuck places with a truck that won't start. Any suggestions? Thank you! 

 

Edited August 29, 2022 by Ccote

[KevinRum]

Hello Ccote,

 

I have had a similar issue with two of my past vehicles (2000 Sierra 1500 and 2004 Impala, 3.6l).  I never found the issue with the Sierra, but the Impala grew to such a big problem the shop replaced and reprogrammed the main computer which fixed the issue.  I always figured the issue was a bug in the software and more specifically within the security system.  I wish you luck in finding it because it is very elusive.   

[Ccote]

4 minutes ago, KevinRum said:

Hello Ccote,

 

I have had a similar issue with two of my past vehicles (2000 Sierra 1500 and 2004 Impala, 3.6l).  I never found the issue with the Sierra, but the Impala grew to such a big problem the shop replaced and reprogrammed the main computer which fixed the issue.  I always figured the issue was a bug in the software and more specifically within the security system.  I wish you luck in finding it because it is very elusive.   

Hi Kevin, 

Thanks for your response! Just the other day it would not start, so I decided to try starting it with the remote starter. Started right up! Must be related somehow. Perhaps ignition switch. Interestingly enough I haven't had the problem again. Will have to wait and see if the problem persists and if the remote start solution continues to work. 

[KevinRum]

Glad you were not stuck like I was.  Note:  Neither of my vehicles this problem occured had remote start.

[DeePa]

Replace your negative battery cable and clean the two ground points where it bolts to the block and frame on the passenger side. 

[DeePa]

I just read it’s a HD. My suggestion may not be correct, but you can check resistance of the negative battery cable as a test.