Starter replacement

The bolt size is 13mm. Here is a guide to help you see what you are in for when doing the job and diagrams to show you what it will be like for your truck:

https://www.2carpros.com/articles/how-to-replace-a-starter-motor

INSTALLATION
1. If equipped, position aluminum spacer to rear of starter.
2. Position starter motor to engine.
3. Support starter and loosely install three mounting bolts.
4. Tighten 3 bolts to 43.4 Nm (32 ft. lbs.).
5. Position wiring eyelets to starter studs and install nuts. Tighten small nut to 6.2 Nm (55 in. lbs.). Tighten large nut to 13.6 Nm (120 in. lbs.).
6. Install protective rubber boot over stud.
7. Lower vehicle.
8. Connect battery cables to both batt

Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.

Cheers

V8 four wheel drive automatic.

How do I get the to the top starter nut to get it off? Frame, exhaust, transmission housing, and fuel rails in the way. Cannot get a socket or combination wrench in to loosen it.

A long extension through the inner fender. Make sure the battery is disconnected.

Replace starter in a 2500.

Disconnect battery ground cable(s), then remove wiring connector from starter.
Remove starter mounting bolts, then the starter.
Reverse procedure to install, noting the following:
Torque B+ terminal nut to 6-9 ft-lbs and solenoid terminal nut to 45-65 in-lbs .
Torque starter mounting bolts to 50 ft-lbs .