general problems of the 2006 Chevrolet Uplander

This has happened several times me and my grand daughter are headed out shopping on highway 26 in oregon summit hiway the rig just shuts down ckicking the doors windows made funny noise and gas doesn't read full when full ,lights dime at night dash lights go out you have to wiggle the little dash board thing to make them go back on side mirrors won't adjust with panel in door ,and just this past week started doing same thing shut down come back on off by itself so had pulled starter,brand new battery and alternator all good this has to be an electrical issue this is extremely dangerous seeings how I live in the mountains on a very curvy roads.

Since purchase I have had what seems to be electircal problems with flickering lights when driving at night. Not sur eif it is a voltage issue or what. Several people felt I was flashing my lights they flicker so much. Been to dealer with no corrective result. This is a safety issue as once a truck I was passing thought I was letting him over when in fact I was not but it was my lights just flickering due to acceleration. This has been happening since van purchase in 2006. Have been living with this problem since purchase but it may be getting worse.