RepairPal Certified shops can diagnose and repair your 1996 GMC Sonoma. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
SOUNDS LIKE YOU MAY HAVE A VACCUM LEAK, YOU SHOULD HAVE THE VEHICLE DIAGNOSED AS THERE ARE MANY THINGS THAT CAN CAUSE A VACCUM LEAK- HOPE THIS WAS HELPFUL
RYAN MODE
MODE AUTOMOTIVE
858-361-4645