I have a 1990 Chevrolet Silverado K1500 with a 350 TBI, the other day it was about -19 degrees outside and she fired right up. About 15 mins later I was going to pick up some food and it would not turn over, jumped it and nothing happend, BUT the radio and heater kicked on. So after scratching my head for a minute I hopped in and turned it to the on position. Nothing, no radio, heat, chime, nothing. But get this interior lights work and so does my headlights. I am guessing a Ignition switch but not sure. I have replaced the battery about a year ago, and replaced the starter three weeks ago. Oh and one more thing, if possable could anyone explain which harness under the dash is the ignition switch. A picture would be extremly helpful. Thanks alot

 

I'd clean the battery connections.

Allan

 

Well I changed to ignition switch, with no luck. I just recently replaced the battery terminals and the connector to the power on the starter. I am beginning to think that my starter solinoid is faulty. What do you guys think?