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Posted

2020 Siera 1500 Denali 37k miles

Today I started getting a bunch of messages

have check engine light

service trailer brake system 

service power steering -drive with care

service side detection system

 

power steering cutting out at low speed

open door and the power running boards are opening backwards 

is this a change the battery moment?

or take it to the dealer -I have no warranty 

Posted

EddDee, That’s exactly what I found when I looked at the braided ground strap on my truck. Haven’t changed it out yet hopefully in the next day or two. I’ll get back with the results. THANKS!!

Posted

Installed the new cab to chassis grounding strap and ALL gremlins are gone, 

Like others, the braided strap was oxidized to just about powder -only a about 1/4 of the strands were left, but all were toast.

Thanks to all that pointed me in the right direction!

  • Like 1
Posted

What a relief...congrats! What kind of grounding strap did you use? Does an insulated battery cable with pre-installed terminals work okay?

Posted

I actually bought the factory replacement. It’s GM pn 84498265. My local dealer had it in stock -it was $22.00.

Posted
1 hour ago, EddDe said:

What a relief...congrats! What kind of grounding strap did you use? Does an insulated battery cable with pre-installed terminals work okay?

IMG_4592.thumb.jpeg.30c0881a4887e392fb8d11b7b016bf81.jpeg

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