UPON EVALUATION, FOUND LONG TERM FUEL TRIMS AROUND +25. SHORT TERM 0, FOUND CODES IN PCM AS FOLLOWS : P0101 – MASS AIR FLOW SENSOR PERFORMANCE, P0171 – BANK 1 LEAN, P0174 – BANK 2 LEAN, P0300 – CYLINDER MISFIRE. CLEARED FUEL TRIMS TO FIND RUNNING ROUGH CONDITION, AND SHORT TERM FUEL TRIMS ROSE QUICKLY. UPON RISE, REMOVED MASS AIR FLOW SENSOR CONNECTOR TO FIND FUEL TRIMS COME BACK DOWN TO ZERO. INSPECTED MAF FOR DEBRIS TO FIND SENSOR CLEAN, INSTALLED NEW TO VERIFY NO ISSUE WITH MAF SENSOR. FOUND NO CHANGE IN FUEL TRIMS WHEN NEW SENSOR WAS INSTALLED, REMOVED NEW SENSOR. MONITORED FUEL TRIMS TO FIND HIGH SHORT TERM. SPRAYED AROUND INTAKE MANIFOLD TO FIND SHORT TERMS TRIMS CLIMB DOWNWARD. ROAD TESTED VEHICLE TO FIND FUEL TRIMS NORMAL IN DRIVING CONDITION. WILL NEED INTAKE MANIFOLD GASKET SET/ INTAKE MANIFOLD.
INTAKE MANIFOLD – Remove & Replace – 5.3L Eng
Janos R. gave our service a 5 star review on 1/24/2022
Perform Oil & Filter Service, Includes Adjusting Tire Pressures. Includes Resetting Oil Change Monitor If Equipped.
Replace front brake pad linings and REPLACE front brake disc rotors. Clean and lubricate brake calipers and slide mechanisms. Check and fill brake fluid. Road test vehicle.
LABOR TO REMOVE AND REPLACE HIGH MOUNT BRAKE LIGHT BULB
Daniel M. gave our service a 5 star review on 9/9/2021
2015 GMC Sierra 1500 CRM Mitchell1
2021-09-10T22:01:08+00:00