Chevrolet Archives - Cornerstone Automotive

2018 Chevrolet Express 2500

CRM Mitchell1 2022-07-22T21:59:45+00:00

Chevrolet Express 2500

Mileage

46,000

Service Date

7/15/2022

Services Performed

AUTOMATIC TRANSMISSION FLUID – Check – 6 Spd Trans Hot Check Procedure – [Includes: Confirm Fluid temperature for level check.] – [Includes: Check Fluid level and condition.]

BRIAN L. gave our service a 5 star review on 7/21/2022

2018 Chevrolet Express 2500 CRM Mitchell1 2022-07-22T21:59:45+00:00

2012 Chevrolet Volt

CRM Mitchell1 2021-11-16T23:03:37+00:00

Chevrolet Volt

Mileage

162,152

Service Date

11/15/2021

Services Performed

SCANNED THE PCM FOR FAULT CODES. FOUND 2 FAULT CODES STORED. CODE (P0101 – MASS AIR FLOW SENSOR / ERROR IN AIR TRIM). CODE (P0171 – FUEL TRIM SYSTEM LEAN CONDITION ERROR). PERFORMED A FULL INSPECTION IN DETAIL TO AIR INTAKE AND FUEL. FOUND THE MAIN AIR INTAKE BOOT DISCONNECTED AND HANGING LOOSE.? FURTHER EXAMINED THE ENGINE AND FOUND THE LOWER INTAKE HOSE TO THE COVER WAS ALSO LOOSE..? RECONNECTED AND TIGHTENED THE HOSES TO THE INTAKE TOP AND BOTTOM. CLEARED THE FAULT CODES AND TEST DROVE THE VEHICLE. FAULTS NO LONGER RETURNED AND THERE IS NO MORE BACK FIRING OR ANY OTHER ISSUES ACTIVE AT THIS TIME. "CHECK ENGINE" LIGHT IS NO LONGER ON. VEHICLE IS OPERATING PROPERLY NOW.

PHILIPPE J. gave our service a 5 star review on 11/15/2021

2012 Chevrolet Volt CRM Mitchell1 2021-11-16T23:03:37+00:00

2008 Chevrolet Impala

CRM Mitchell1 2020-10-24T22:02:07+00:00

Chevrolet Impala

Mileage

72,532

Service Date

10/23/2020

Services Performed

FOUND WIRE TO THE OIL PRESSURE SENDER HAD BEEN CHEWED ON FROM A RODENT. REPAIRED AND SHRINK TUBE THE WIRE. TEST AFTER THE REPAIR AND NOW HAVE PROPER SIGNAL WITH NO FAULTS PENDING AGAINST THE OIL PRESSURE SENDER. REPAIR RESOLVED THE ISSUE – WORKING NORMAL NOW.
PERFORMED FULL DIAGNOSTIC OF THE VEHICLE – SCANNED THE PCM FOR FAULTS. FOUND TWO FAULTS. CODE P41825 – INTERNAL MODE SWITCH IS A SLIDING CONTACT SWITCH CONNECTOR TO THE VALVE BODY. IT'S PURPOSE IS TO LET THE "TCM" (TRANSMISSION CONTROL MODULE) KNOW WHAT GEAR YOU SELECTED, BASE ON AN ELECTRICAL SIGNAL THAT IT SENDS. CODE P1915 – INTERNAL MODE SWITCH "START/WRONG" RANGE. THE MANUAL SHIFT SHAFT "IMS" SWITCH ASSEMBLY DOES NOT INDICATE "PARK" OR "NEUTRAL" DURING THE SELECTION. REMOVED THE AIR BOX ASSEMBLY TO VISUALLY SEE THE PCM AND TCM HARNESS. NO ISSUES HERE ON THE VISUAL INSPECTION. CAN SEE SOME SIGNS OF RODENTS IN THE ENGINE COMPARTMENT AND IN THE AIR BOX. BACK TRACE THE FAULTS TO THE "TCM" POWER AND GROUND ARE PRESENT. NOT SEEING THE SIGNAL OR COMMAND FROM THE "TCM" AND THE CLUSTER. SUGGEST REPLACING THE "TCM" AND RE FLASH TO ADAPT TO THE VEHICLE. SEE ESTIMATE FOR THIS REPAIR. OIL PRESSURE FAULT INDICATES TOO LOW OF VOLTAGE. THIS WILL CAUSE THE PCM TO MAKE THE CHECK ENGINE LIGHT COME ON. TEST THE OHM RESISTANCE ON THE SWITCH AND COMES BACK WITHIN NORMAL RANGE. THIS CONFIRMS THE SWITCH SHOULD BE WORKING? – DOING FURTHER INSPECTION OF THE OIL PRESSURE SENDER CONNECTOR / HARNESS TO THE SENDER WE FOUND THE HARNESS WAS CHEWED ON FROM A RODENT WE SUSPECT. SUGGEST REPAIRING THE HARNESS TO THE OIL PRESSURE SENDER AND RECHECK AFTER THE REPAIR. SEE ESTIMATE FOR THIS REPAIR.
REMOVED THE OLD TCM UNIT AND REPLACED WITH A NEW UNIT. CLEARED THE FAULTS AND WAITING FOR OUTSIDE REPROGRAM SOURCE TO COMPLETE THE ADAPTION TO THE VEHICLE. TEST AFTER THE REPAIR AND NOW VEHICLE IS OPERATING NORMAL NOW. NO MISBEHAVING – GEAR SELECTOR IS DISPLAYING IN THE CLUSTER NOW. REVERSE LIGHTS ARE ALSO WORKING NORMAL NOW.
RE-FLASHED THE NEW TCM CONTROL UNIT. TEST AFTER THE FLASHING (REPROGRAM) – VEHICLE IS WORKING NORMAL NOW. DASH DISPLAY SELECTOR IS INDICATING THE GEAR SELECTION NOW. REVERSE LIGHT IS WORKING NOW.

JEFF K. gave our service a 5 star review on 10/23/2020

2008 Chevrolet Impala CRM Mitchell1 2020-10-24T22:02:07+00:00