My 06 Trailblazer needed a new fuel pump due to a bad sensor. Now that it is in the thing has all sorts of electrical issues. The dashboard display and radio both turn off as soon as I either take it out of park or toggle the headlight switch and it will not shift into drive. It seems to be running better than ever I had the alternator looked at and they replaced the brushes and cleaned it up nice and pretty, it appears to be charging the battery (14 plus volts when running) and the engine sounds great no knocking nothing. You can hear a sound when you turn the light switch on and off that coincides with the dash and radio turning off almost like a priming noise but other than that I'm stumped.
How long has your 2006 Chevrolet Trailblazer had this problem?
since dropping the fuel tank and replacing the pump
RepairPal Certified shops can diagnose and repair your 2006 Chevrolet Trailblazer. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
