2016 Chevrolet Colorado

WHEN TRAVELING FORWARD,OR TURNING, AT HIGHWAY SPEEDS BETWEEN 20 MPH AND 40 MPH, THIS VEHICLE SHUDDERS ( 6 SPEED TRANSMISSION)AND ACCELERATION PAUSES UNTIL A LOT OF EXTRA EFFORT IS PLACED ON THE GAS PEDAL.THE TRANSMISSION THEN DOWNSHIFTS WITH A SUDDEN LURCH. THIS LEADS TO A SAFETY HAZARD WHEN INSTANT ACCELERATION IS NEEDED.THIS HAPPENS EVERYDAY AT ANY TIME OF THE DAY AND WHETHER HOT OR COLD.

DRIVING MY 2016 CHEVY COLORADO LT 4X4 DOWN THE HIGHWAY AND ALSO ON 2 LANE ROADS IN GREAT WEATHER CONDITIONS THE SERVICE POWER STEERING AND STABILTRAK LIGHTS CAME ON. ELECTRIC STEERING WAS DISABLED AND I HAD EXTREME DIFFICULTY WITH TURNING LEFT OR RIGHT. THIS IS THE SAME RECALL AS GM 15595. TURNING THE VEHICLE OFF AND ON RESOLVES THE ISSUE TEMPORARILY. NOW IT IS HAPPENING MORE AND MORE AND I DO NOT FEEL SAFE WITH MY FAMILY IN THE VEHICLE.

WHEN DRIVING IN STOP AND GO TRAFFIC, AND THROUGH CITY AND RESIDENTIAL AREAS, THE TRANSMISSION SEEMS TO STRUGGLE FINDING THE CORRECT GEAR. THE TRANSMISSION HESITATES AND DOES NOT SHIFT AS SMOOTHLY AS IT SHOULD, AND SOMETIMES SHIFTS HARD UPON REACCELERATION, OR SUDDEN BRAKING. THE TRANSMISSION ALSO STRUGGLES TO FIND THE CORRECT GEAR WHILE HIGHWAY DRIVING (70-75 MPH) WITH CONSTANT GRADE CHANGES, AND HILLS. (INTERSTATE 5 FROM LOS ANGELES TO BAKERSFIELD CA. ) WHEN STARTING THE VEHICLE AND PLACING IT IN REVERSE TO BACK UP, THE TRANSMISSION SHUTTERS SLIGHTLY BEFORE ENGAGING PROPERLY. THIS USUALLY HAPPENS ON A SLIGHT GRADE, AS MY STREET AND DRIVEWAY MODERATELY SLOPED. I TOOK THE TRUCK AT THE DEALER FOR AND UNRELATED ISSUE, AND ASK THEM TO CHECK IT. THEY SAID IT WAS "NORMAL". I HAVE READ ABOUT SIMILAR COMPLAINTS ON SEVERAL FORUMS, AND ITS SEEMS TO BE A VERY COMMON COMPLAINT. THIS TRANSMISSION SEEMS TO BE JUNK! THE TIME FRAME FOR THIS COMPLAINT IS FROM 2/1/2019 (22,000 MILES) TO PRESENT. OTHERS HAVE COMPLAINED WITH AS LITTLE AS 4,000 MILES.

THE TRANSMISSION IS EXTREMELY SLOW TO DOWNSHIFT. AS YOU CONTINUE TO PUSH THE GAS PEDAL, IT WILL FINALLY DOWNSHIFT, SOMETIMES TWO GEARS, AND SUDDENLY ACCELERATE. WHEN ON CRUISE CONTROL, YOU LOOSE ABOUT FOUR MPH BEFORE IT FINALLY DOWNSHIFTS, AGAIN SOMETIMES DOWNSHIFTING TWO GEARS. IN TRAFFIC, THE CAR BEHIND YOU DOESN'T ANTICIPATE THE LOSS OF SPEED AND THEN YOU SUDDENLY ACCELERATE. IT HAPPENS AT ALL SPEEDS, BUT IS PARTICULARLY UNSAFE AT LOW SPEEDS WITH THE SUDDEN ACCELERATION. THIS IS PROBABLY A SOFTWARE PROBLEM AS THE TRANSMISSION SHIFTS MUCH MORE NORMALLY IF YOU PUT IT IN 'TOW/HAUL' MODE. THE DEALER SAYS THIS IS 'NORMAL' AND GM CALLS IT ' TORQUE MANAGEMENT '. IT IS ESPECIALLY UNSAFE IN SLICK CONDITIONS OR RAINY ROADS. BTW, I HAVE A 2017 IMPALA WITH THE SAME SIX SPEED AND V-6, AND IT DOES NOT EXHIBIT THIS RELUCTANCE TO DOWNSHIFT. THANK YOU.

THE TRANSMISSION (6SPD AUTOMATIC W/V6 ENGINE) OF THIS VEHICLE IS KNOWN TO HAVE ISSUES THAT WILL SURPRISE YOU IF YOU AREN'T ALREADY AWARE OF THEM. THE ISSUE AFFECTING SAFETY THE MOST, IS THE OCCASIONAL ENGINE ACCELERATION WHILE APPLYING THE BRAKES AS THE TRANSMISSION DOWNSHIFTS TO A LOWER GEAR. IT CAUSES THE CAR TO ACTUALLY ACCELERATE MOMENTARILY AS YOU APPLY THE BRAKE EVEN HARDER TO ARREST THE INCREASED SPEED. I WAS DRIVING UP A SLIGHT INCLINE AT ABOUT 35-40 MPH WHEN ALL OF A SUDDEN THE CAR IN FRONT OF ME CAME TO A COMPLETE STOP BECAUSE THE CAR IN FRONT OF HER HAD STOPPED COMPLETELY. I HAD DRIVEN THIS ROAD FOR MORE THAN 30 YEARS AND HAD NEVER SEEN ANYONE COME TO A COMPLETE STOP AS THE FIRST CAR DID IN THIS AREA. FIVE(5) OF US WERE ALL SURPRISED. I WAS THE THIRD CAR. AS I FIRMLY APPLIED MY BRAKES, THE CAR INITIALLY SLOWED DOWN BUT THEN IT FELT AS IF IT WAS TRYING TO ACCELERATE AND UNFORTUNATELY I WAS UNABLE TO STOP IN TIME, ALTHOUGH I ONLY LIGHTLY TAPPED THE CAR IN FRONT OF ME, FOLLOWED BY 3 MORE CARS IN BACK OF ME. AT FIRST I WAS SURPRISED THAT I WASN'T ABLE TO STOP IN TIME AND THEN IT OCCURRED TO ME THAT THE STRANGE FEELING I FELT AS THE VEHICLE SLOWED WAS AS IF THE ENGINE HAD ACCELERATED AS IT DOWNSHIFTED CAUSING THE BRAKING ACTION TO NOT BE AS GOOD AS IT SHOULD HAVE BEEN. SINCE I KNEW THE CAR OCCASIONALLY DID THIS I THOUGHT I SHOULD REPORT THIS AS POSSIBLY CONTRIBUTING TO MY PROBLEM AND PUT IT ON RECORD IN CASE YOU HAD OTHER REPORTS LIKE THIS.