OEM ground locations?

[Erik the Awful]

Yup, the other end broke off. Find a broken washer-looking thing nearby and that's where it goes. You can try and crimp another end on the strap, but I'd just replace it with 12 gauge wire.

 

[454cid]

Yup, the other end broke off. Find a broken washer-looking thing nearby and that's where it goes. You can try and crimp another end on the strap, but I'd just replace it

That looks like the filler neck ground, to me.

 

[94GMCK1500]

Looking for a diagram of body grounds for 94 gmc Sierra k1500 with 5.7 liter

 

[PlayingWithTBI]

Looking for a diagram of body grounds for 94 gmc Sierra k1500 with 5.7 liter

Have you looked at these manuals?

88-98 Service Manuals

Over the years I have collected a bunch of GM service literature. Links to PDF Scans of service and STG manuals and a links to the Parts manuals. You'll need the FREE Adobe Acrobat reader to open these files. Get it directly from Adobe here {http://get.adobe.com/reader/} If you're not...

www.gmt400.com

 

[94GMCK1500]

Update.... I cleaned all the grounds with the problem still being there... Had a co worker at my wife's work knows about electrical issues... Back story is I replaced oil sensor but dropped a ratchet between engine and firewall... Finished up the job but couldn't find the ratchet... Time got late so next morning the problem started... Dead battery...
Problem was this... The new sensor was bad... When sensor drops to zero oil pressure, it runs off the fuel pump an it shuts off the fuel pump... Changed out the supposed to be new Car Quest sensor and the second new one started working and dead battery issue fixed...

 

[HotWheelsBurban]

Update.... I cleaned all the grounds with the problem still being there... Had a co worker at my wife's work knows about electrical issues... Back story is I replaced oil sensor but dropped a ratchet between engine and firewall... Finished up the job but couldn't find the ratchet... Time got late so next morning the problem started... Dead battery...
Problem was this... The new sensor was bad... When sensor drops to zero oil pressure, it runs off the fuel pump an it shuts off the fuel pump... Changed out the supposed to be new Car Quest sensor and the second new one started working and dead battery issue fixed...

Did you ever find the ratchet? Glad you got it figured out though!

 

[94GMCK1500]

Did you ever find the ratchet? Glad you got it figured out though!

Nope, never found it... Did buy an oil pressure tester so we'll know what's going on with the pressure issue...

 

[94GMCK1500]

The oil pressure is starting to drop but engine sounds healthy... So a tester and hopefully just be a another bad gage. I'll buy a Sun oil pressure gage and install it...

 

[GoToGuy]

Rather than guessing the manuals are all here for free. It will answer your questions.

 

[1993GMCC2500SLX]

3/8 course. I would used the holes on the passenger side of the block unless you have a drivers side battery tray.

As for the starter you use the "S" terminal.

Usually only points ignition system used the r and s terminals on gm starters