2008 Escalade - rapid clicking no start

[mikez71]

He said he had no drop to the ground strap (block side), but does on the starter case. ? If I'm reading right..

 

[j91z28d1]

He said he had no drop to the ground strap (block side), but does on the starter case. ? If I'm reading right..

yeah I was a bit confused with that too. unless where it mounts to the block is very rusty from salty roads between the starter and the block. I don't think I've ever seen a starter not make a good ground to the block. but I have never had to deal with road salt.

 

[Mordechai]

UPDATE! I hooked a 1 gauge jumper cable from the battery ground to the firewall ground and it started right up. I then disconnected it and it's constantly starting normally now but I still have about 1.25v of voltage drop at the firewall ground when starting. I'm thinking of adding a ground cable directly from the battery to the firewall. Is that a good idea or no? Thank you

https://imgur.com/a/nY6noMl

 

[Fless]

Before adding anything I'd probably first replace the engine-to-body ground with a new cable (rear of left head to the firewall). I'd also remove and clean the battery ground at the block, wherever that is on yours.