No crank no start 2015 Chevy Tahoe

[Riley6628]

I have a 2015 Tahoe and when it rains I get no crank no start and a whole bunch of errors come up on the dash, I can sometimes get it to start in the rain after fighting it for about an hour. I attached some photos of the codes I got from the scan, also a video of what the truck is doing. If anyone has a solution it would be much appreciated

 

[Riley6628]

Forgot to add when it’s dry and no rain the truck runs perfect

 

[Bob2C]

I would replace your battery cables. There has been issues with the resistance in these cables causing all sorts of electrical issues. This might guide you in the right direction.

https://static.nhtsa.gov/odi/tsbs/2019/MC-10168185-9999.pdf

 

[Doubeleive]

yep check the battery cables, starter cable, and grounds in particular there are 2 grounds basically behind each front wheel on the frame, some brainiac put them there and they get wet and coated in grease and grime, I took mine off and sanded the contact down to clean bare metal

 

[Riley6628]

Checked all grounds and replaced battery cables same issue, now my scanner can’t communicate with the truck.

 

[Riley6628]

Well I found the problem under the kick panel on the driver door side one wire was being pinched.

 

[LEBJR]

I have a 2010 Yukon Denali xl the randomly no crank no start. It does it in the rain, when it’s dry, it doesn’t matter what the weather is like. The only way I can get it to do anything is to disconnect and reconnect the battery. When it decides to act up, you can’t scan it to see what codes are there, it doesn’t even recognize that the truck has an ecm. After reconnecting the battery, there are no codes to pull. I checked all of the ground wires that I could find, they are good and clean of debris. The battery cables are clean and tight, what else could be wrong?

 

[LEBJR]

Well I found the problem under the kick panel on the driver door side one wire was being pinched.View attachment 366376

This one wire caused it to not crank only when it rains??

 

[Tahoe14]

LEBJR, you may want to share this in the 2010 section as well, it may help someone who experiences this problem.