When accelerating and rpm's near 3000, the voltage drops and all electrical quit
What is your question?
The engine still runs but nothing else electrical works, everything shuts down. Everything. If I accelerate at less than 2800-3000 no problems.
First gear shifts hard when cold.
Sometimes engine turns hard (like early timing) sometimes turns fine and won't start, but stop cranking and then start cranking again it fires right up and runs fine. Any clues to these exciting challenges anyone?
RepairPal Certified shops can diagnose and repair your 2000 GMC Sonoma. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.