no temp reading

[swap_help_needed]

long time no see.......given up on doing a swap for now, just sold my navigator and buying a house soon and then a car so after that i can tear down my truck and do a swap



got a problem though......i havent had a temp reading for well over a year and a half, then i bought a chip and stat and thought that changing the stat out that it would work then but still no reading
a year later.......just put in a new temperature sending unit and still dont get a reading
what could be the problem?
when i start it the needle pegs out then goes back to the bottom pointing to the top of the little symbol of a thermometer at the bottom left

93 GMC, 5.7L 350

[cammed02silvy]

check all the wires...usually if you check all the little things first that can eliminate those things and such. it might even be the gauge no reading correctly.