GMC Jimmy P0440 AND P0442 Codes

REYNALDO MEDINA’s question: My 2000 GMC Jimmy 2WD 4.3 L IS INTERMETENTLY SHOWING THE CODE P0440 AND P0442 EVERY OTHER WEEK. DO YOU HAVE A TRICK OR OTHER SOLUTION TO REPAIR AND FIND OUT WHERE THE SMALL LEAK IN THE EVAP SYSTEM? BECASUE GOING TO DEALER TO SMOKE TEST THE SYSTEM WAS SO EXPENSIVE. ANY […]