'02 with the 4.3 V6, 193K miles. Driving yesterday and it just died. I was able to get if off the road then towed to my house. I don't have a scan tool, but tried several methods on line. The only readout I got was using the hold the odometer rest button, turn key on, release button, and I got a read of h5311.4. I couldn't find a code like that anywhere. I looked at the method of using a jumper at the connection for a scan tool, but the image I saw showed lumping the upper right two terminals. On my truck those two slots are empty.

I texted a friend who has a scan tool, hopefully I can borrow it and find out what's going on.

 

Yeah - I think you need a scan tool for sure. Amazon has cheap ones down in the $25 price range. Personally, I use a ODBLink SX cable ($50) that connects to my Windows laptop. So far I really like the ODBLink capabilities, on the 4 vehicles I've used it with anyway.

 

The h5311.4 is the hours on the engine. You definitely need a scan tool.

 

Does it start?

 

OldChevy, awesome. Had no idea hours were tracked on an automobile. Commonplace on heavy equipment.
MMJ, no. It died while driving and I tried to restart with no luck.
I checked fuel pressure today, used an old set of refrigeration gauges, went right up to 60 pounds. I'll check for spark with an old spark plug tomorrow when I have help to turn the key. My friend with the scanner might get hear tomorrow sometime.

 

Is it cranking?

 

Yes it cranks fine.

 

did you wait 15 minutes or so to see if it's able to hold that pressure?

Have you checked all the fuses?

 

Cheap scanner -- https://www.harborfreight.com/automo...der-64981.html

 

I did not wait to see if it held pressure. I checked fuses this morning and all is good.
I will look into that scanner, I have an item from them I want to get anyway.