{"nhtsa_id":10081320,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-10-03","date":"2016-06-15","document_id":"PIT5510","mfr_campaign":null,"replaces":null,"component":"ENGINE; FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM","mfr_system":null,"summary":"THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN HOW TO DIAGNOSTIC AND REPAIR VEHICLES THAT MAY HAVE FUEL GAUGE THAT SHOWS EMPTY AND THE LOW FUEL LEVEL INDICATOR IS ON. DIAGNOSTIC TROUBLE CODE P2636 WILL BE SET IN THE ENGINE CONTROL MODULE. TECHNICIAN WILL USE NORMAL SERVICE INFORMATION DIAGNOSTICS FOR THE CONCERN. TECHNICIAN WILL OPERATE THE TRANSFER PUMP FOR 2 MINUTES AND MEASURE THE FUEL IN A CONTAINER. THERE SHOULD BE GREATER THAN 2.6 LITERS (0.70 GALLONS) OF FUEL. IF TRANSFER PUMP NOT TO MEET THE FLOW SPECIFICATIONS CHECK FOR PLUGGED FUEL TANK VENTS, KINKED FUEL LINES, A FAULTY TRANSFER PUMP, NO FUEL IN THE REAR TANK, AND LOW VOLTAGE DUE WIRING CONCERN. AFTER PERFORMING NORMAL SI SERVICE INFORMATION DIAGNOSTICS FOR THE CONCERN AND ANOTHER ROOT CAUSE IS NOT FOUND, GENERAL MOTORS ENGINEERING IS AWARE OF THIS CONCERN AND IS WORKING ON A CORRECTION.","document":null,"url":"https://open.wenmarpro.com/bulletins/10081320","components":[{"id":"engine","name":"Engine","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":["P2636"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2016,"year_to":2016,"match":"base","vehicle_ids":["2016_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 3500","year_from":2016,"year_to":2016,"match":"base","vehicle_ids":["2016_gmc_sierra"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}