i have a 92 k2500 6.5 turbo and if you drive it for more than an hour when you shut it off the glowplugs and the tps loose power.after sitting for a couple hours the power comes back.i replaced the glow plug power module and didnt change anything.any suggestions.

 

next time it does it to you take bottle of water and pure it over the injector pump try starting if starts then pump on it way out

 

the motor still runs after shut off it just has no power to the glow plugs or the tps. the injector pump desnt have anything to do with those does it.

 

where does the tps get its power from and the glow plugs