No power to dash, ignition, accessories - 1987 Suburban

[Daggar]

Forgive me if the answer is posted elsewhere on herw but the search function does not like my PDA.

This morning I went out and it was about -25 degrees c outside. Went to start the Suburban and it turned and fired ran for 5 seconds and then I lost power to the dash and the engine died. Now I have no power to the ignition or dash power locks or rear window. All I seem to have is a working dome light and the horn and key buzzer works. I checked all the fuses under the dash,and the wires running to the starter I did not see any burned out wires and the fuses all tested good with my voltmeter. Is there any hidden fuses in the engine bay that I might be missing?

Any help would be great as I really need my truck for work.