GMC Archives - The Diesel Doctor

2016 GMC Sierra 3500 HD
Mileage
256,254
Service Date
8/1/2025
Services Performed
FULL SCAN AND PRINT – LU
FOUND: READINGS FOR REDUCTANT FLUID HEATERS OUTSIDE OF SPECIFICATIONS (RECOMMEND REPLACING REDUCTANT HEATER, SUPPLY LINE ASSEMBLY, AND CONTINUE DIAGNOSTICS IF NEEDED). AFTER REPAIRS: AFTER MULTIPLE TEST DRIVES AND MILES NO AFTERTREATMENT ISSUES AND SYSTEM WORKING PROPERLY AT THIS TIME. 6-13-25 LU
FOUND: TRAILER BRAKE OPERATING PROPERLY AT THIS TIME (RECOMMEND RESCHEDULING IF PROBLEM PERSISTS). 5-19-25 M.E. 3PM
REDUCTANT FLUID HEATER AND SUPPLY LINE ASSEMBLY – REMOVE AND REPLACE
TERRY F. gave our service a 5 star review on 8/5/2025
2007 GMC Sierra Classic
Mileage
159,653
Service Date
7/18/2025
Services Performed
FOUND: PASSENGER REAR AXLE SEAL LEAKING, WHILE REMOVING PARTS TO GET TO SEAL FOUND BRAKE CALIPER BOLT LOOSE AND WHEEL HUB NOT SEATED PROPERLY, SOME SCORING ON SPINDLE SHAFT (WHERE SEAL MAKES CONTACT), AND BRAKES SATURATED IN GEAR OIL (RECOMMEND CLEANING UP SPINDLE SHAFT, CLEANING BRAKE COMPONENTS, REPLACING SEAL, AND CUSTOMER DRIVE TIME TO CONFIRM NO OTHER ISSUES PRESENT). 7-17-25 M.U. 10AM
WHEEL SEAL – REMOVE AND REPLACE (REAR PASSENGER SIDE)
ROB B. gave our service a 5 star review on 7/19/2025
2013 GMC Sierra 2500 HD
Mileage
181,431
Service Date
2/17/2025
Services Performed
DROVE MULTIPLE TIMES AND HAVE NO CONCERNS AT THIS TIME, C.E. M.U. 2/13/25 10AM
WILLIAM C. gave our service a 5 star review on 2/18/2025
2013 GMC Sierra 2500 HD
Mileage
178,801
Service Date
10/29/2024
Services Performed
DURING REPAIRS: FOUND WHEEL SEAL BLOWN (WE REPLACED BOTH) C.E. 10/29/24 10AM
WILLIAM C. gave our service a 5 star review on 10/30/2024
2006 GMC Sierra
Mileage
265,062
Service Date
7/15/2024
Services Performed
FOUND: RECOVERED, EVACUATED, RECHARGED A/C SYSTEM, 1.6LBS OF FREON, SYSTEM HOLDS CHARGE AND IS BLOWING COLD AIR AT THIS TIME. M.U. 7/15/24 10AM
ROBIN B. gave our service a 5 star review on 7/15/2024
2015 GMC Sierra 2500 HD
Mileage
256,726
Service Date
7/1/2024
Services Performed
FOUND: AIR FILTER LITTLE DIRTY, (RECOMMEND AIR FILTER ON NEXT SERVICE, OR S&B FILTER SYSTEM) L.U. 7/1/24 12PM
FUEL FILTER – REMOVE AND REPLACE
CHERYL A. gave our service a 5 star review on 7/1/2024
2005 GMC Sierra
Mileage
170,065
Service Date
6/10/2024
Services Performed
FOUND: POWER STEERING LINES ARE LEAKING (RECOMMEND REPLACING ALL THREE PRESSURE LINES) SERVICE DUE (RECOMMEND OIL SERVICE), CODE P0101B, P0102B MASS AIR FLOW SENSOR PERFORMANCE, AND CIRCUIT LOW VOLTAGE, ( RECOMMEND CLEANING AND RETESTING IF FAULT COMES BACK REPLACE), PO207A, P2146A INJECTOR #7 CONTROL CIRCUIT, POSITIVE VOLTAGE CONTROL CIRCUIT GROUP1, (RECOMMEND INJECTOR #7 CONNECTOR, OR POSSIBLE INJECTOR HARNESS) M.U. 6/5/24 10AM AFTER REPAIRS NO ISSUES AND NO CODES AT THIS TIME. M.E. 6/7/24 4PM
POWER STEERING HOSE – REMOVE AND REPLACE (ALL)
MASS AIR FLOW SENSOR – REMOVE, CLEAN, REINSTALL
INJECTOR WIRE CONNECTOR – REMOVE AND REPLACE (#7)
ENGINE OIL – DRAIN, FILL, REMOVE AND REPLACE FILTER
TOD G. gave our service a 5 star review on 6/11/2024
2015 GMC Sierra 2500 HD
Mileage
227,416
Service Date
6/7/2023
Services Performed
FOUND: CODES; P11DB, P22FE, P245A, AND P24C4 (RECOMMEND REPLACING EGR COOLER BYPASS VALVE AND PERFORMING FORCED REGEN)(POSSIBLE NOX SENSOR FAILURE AS WELL). 5-22-23 11AM
EGR COOLER BY-PASS VALVE – REMOVE AND REPLACE
PARTICULATE FILTER ASSEMBLY – FORCED REGEN
ENGINE OIL – DRAIN, FILL, REMOVE AND REPLACE FILTER
CHERYL A. gave our service a 5 star review on 6/7/2023
2012 GMC Sierra
Mileage
205,675
Service Date
2/14/2023
Services Performed
FOUND: CUSTOMER STATES THEY PUT ABOUT $65.00 IN GASOLINE IN THE DIESEL FUEL TANK (RECOMMEND DRAINING CONTAMINATED FUEL, PUTTING FRESH FUEL IN, CHANGING FUEL FILTER, AND USING AN ADDITIVE). 2-13-23 H.G. L.U. 10AM
FUEL TANK – DRAIN, REPLACE WITH DIESEL, AND DISPOSE OF CONTAMINATED FUELS
FUEL FILTER – REMOVE AND REPLACE
KATHY N. gave our service a 5 star review on 2/14/2023
2004 GMC Sierra
Mileage
55,013
Service Date
7/12/2022
Services Performed
INSPECT BRAKES
BRAKE SHOES &/OR PADS – Remove & Replace – All – [Includes: Clean, lube and/or replace Brake Hardware as necessary. Adjust Brakes (where applicable). Includes: Repack Wheel Bearings (where applicable). DOES NOT include refinishing.]
(Additional) – BRAKE SYSTEM – Bleed w/10 Stud Wheels add (ALL)
(Additional) – BRAKE SYSTEM – Bleed w/Dual Rear Wheels add
BRAKE HOSE – Remove & Replace – One – [Includes: Perform ABS Automated Bleed procedure.] – [Includes: Bleed Hydraulic System.]
BOB S. gave our service a 5 star review on 7/13/2022

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