2014 Chevrolet Tahoe Power Train

The contact owns a 2014 Chevrolet Tahoe. The contact stated while attempting to start the vehicle, the contact noticed a failure with the gear shifter. The contact stated that the gear shifter remained in neutral and failed to shift to any other gear. The contact attempted to restart the vehicle, but the failure persisted with the check engine warning light illuminated. The dealer was not contacted, and the vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 127,666.

WAS GETTING 20 TO 22 MPG ON THE HIGHWAY THEN IT SUDDENLY DROPPED TO WHERE I WOULD ONLY BE GETTING 15 TO 16 MPG. I HAVE ALSO GONE OUT AND GOTTEN GAS THE NIGHT BEFORE AND AFTER RESETING THE AVERAGE MPG I WOULD BE BACK UP TO GETTING 19 TO 20 ON CITY STREETS AND GO OUT THE FOLLOWING MORNING AND ON THE FIRST START UP AND IT WOULD DROP BACK DOWN TO 12 TO 13 ON WHILE STATIONARY AND STAY THAT WAY FOR THE REST OF THE WEEK EVEN AFTER GOING BACK ON THE HIGHWAY AT TIMES. I HAVE HAD THE EFI CLEANED AT LEAST 3 TO 4 TIMES SINCE OWNING THE VEHICLE. SO I'M STARTING TO WONDER IF A PART OF THE ELECTRONIC CONTROL UNIT COULD POSSIBLY NOT BE WORKING PROPERLY.

TL*THE CONTACT OWNS A 2014 CHEVROLET TAHOE. THE CONTACT STATED THAT WHILE THE VEHICLE PARKED, IT ROLLED AWAY AND INTO THE DRIVER BEFORE CRASHING. THE DRIVER SUSTAINED FATAL INJURIES. THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 14V374000 (POWER TRAIN). A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.

VEHICLE 4WD SELECTOR SET TO AUTO. STARTED VEHICLE. VEHICLE 'SERVICE 4WD' WARNING LIGHT CAME ON. VEHICLE BECAME STUCK IN 4WD MODE. VEHICLE DIFFICULT TO STEER OR DRIVE, AND WOULD NOT ACCELERATE TO NORMAL ROAD SPEED CREATING SAFETY ISSUE. REPEATED SHUTDOWN AND RESTARTS OF VEHICLE DID NOT REMEDY PROBLEM. HAD VEHICLE TOWED TO DEALER. DEALER SERVICE DEPARTMENT SAID IT WAS A KNOWN PROBLEM, AND SAID THEY APPLIED MANUFACTURER SOFTWARE UPDATE THAT WAS ISSUED. DEALER SAID THAT NO OFFICIAL RECALL HAD BEEN ISSUED BY MANUFACTURER BUT A SERVICE BULLETIN AND SOFTWARE PATCH HAD BEEN ISSUED. VEHICLE RETURNED. 'SERVICE 4WD' WARNING LIGHT STILL COMES ON EVERY TIME VEHICLE IS STARTED DESPITE SOFTWARE PATCH. KEEP VEHICLE 4WD SELECTOR SET TO 2WD IN FEAR THAT USING 4WD OR AUTO WILL RE-ENGAGE 4WD AND VEHICLE WILL BE STUCK IN THAT MODE - DIFFICULT TO DRIVE OR STEER, AND UNABLE TO ACCELERATE TO NORMAL ROAD SPEEDS. *TR