2015 Chevrolet Colorado

SLUGGISH ENGINE AFTER SLOWING DOWN AND THEN TRYING TO INCREASE SPEED, ENGINE JUMPS AND HESITATES FOR A FEW SECONDS THEN IF YOU STOMP ON THE GAS PEDAL IT DOWNSHIFTS AND TAKES OFF AFTER REVING TO ABOUT 5,000 RPMS. THIS USUALLY HAPPENS WHEN SLOWING DOWN TO ABOUT 20-30 MPH THEN STARTING TO INCREASE SPEED. IT IS TRULY EMBARRASSING OWNING THIS $37,0000 TRUCK. DEALERSHIP AND GM CUSTOMER SERVICE STATED THAT THE ENGINE NEEDS TO LEARN HOW I DRIVE AND ADAPT. REALLY? THE ENGINE IS REMAINING IN TOO HIGH OF A GEAR AND NOT DOWNSHIFTING AND SUPPLYING THE ENGINE POWER THAT IS REQUIRED IN TRAFFIC. THIS PROBLEM HAS EXISTED SINCE I PURCHASED THE VEHICLE 11/1/14, I'VE IGNORED THE PROBLEM HOPING IT WOULD GO AWAY BUT HERE I AM.

THE 2015 COLORADO HAS AN ELECTRICAL/LIGHTING PROBLEM. WHILE THE LIGHTING IS NOT A BIG ISSUE, THE FACT THAT IT MAY INDICATE A MORE SERIOUS ELECTRICAL PROBLEM IS. WHEN ENTERING THE TRUCK, THE CARGO LIGHT COMES ON, AS IT IS SUPPOSED TO, BUT WHEN EXITING THE TRUCK, THE REVERSE LIGHTS COME ON INSTEAD OF THE CARGO LIGHT. I NOTICED THIS WITH OUR FLEET VEHICLE, AND HAVE SINCE HEARD FROM MANY OWNERS WHO HAVE THE SAME PROBLEM.

THE TRANSMISSION WON'T DOWNSHIFT WHILE TRYING TO ACCELERATE AFTER SLOWING DOWN. THE TRUCK WILL START TO VERY NOTICEABLY CHUG AND JERK AND NOT WANT TO GO FROM NOT DOWNSHIFTING WHEN BRAKING AND THEN TRYING TO ACCELERATE. I HAVE BEEN CLOSE TO GETTING REAR ENDED WHEN THIS HAPPENS AND TO AVOID IT I HAVE TO STOMP ON THE GAS PEDAL WHICH THEN CAUSES IT TO JERK ERRATICALLY FROM DOWNSHIFTING TOO FAR AND CAUSING ME TO ACCELERATE TOO FAST AND ALMOST REAR ENDING THE VEHICLE IN FRONT OF ME. THIS HAPPENS EVERY TIME I SLOW DOWN TO GO AROUND SOMEONE TURNING OR SLOWING DOWN TO STOPPED TRAFFIC AND THEN ACCELERATING AGAIN. WHILE DRIVING WITH MY WIFE AT AROUND THE 200 MILE MARK IT STARTED CHUGGING BADLY AND SHE THOUGHT WE WERE BREAKING DOWN. IT IS VERY EMBARRASSING WHEN SOMEONE IS RIDING WITH ME BECAUSE NO VEHICLE SHOULD ACT LIKE THIS. GM SHOULD BE ASHAMED OF THEMSELVES. I HAVE ABOUT 10,500 MILES ON MY TRUCK RIGHT NOW AND THIS ISSUE HAS BEEN A SERIOUS ISSUE SINCE I DROVE IT OFF THE LOT BRAND NEW. TOOK IT TO THE DEALER AND THEY SAID IT SHOULD TAKE A COUPLE SECONDS TO SHIFT FROM GEAR TO GEAR. ITS FUNNY BECAUSE I HAVE DRIVEN A LOT OF VEHICLES AND NONE OF THEM HAVE DONE THAT OR TOOK THAT LONG TO SHIFT. I KNOW THE TRANSMISSION IS SUPPOSED TO ADAPT TO YOUR DRIVING...WHICH SEEMS VERY UNNECESSARY TO ME BUT OBVIOUSLY IT IS NOT WORKING OUT FOR THE COLORADOS. ADAPTIVE TRANSMISSIONS NEED TO GO AND PUT A FIRM SPORTY SHIFTING TRANSMISSION IN THESE TRUCKS.

PURCHASED TRUCK IN NOVEMBER 2014. CREW CAB Z71. HAD PROBLEMS RIGHT AT 200 MILES. THEY SAID THE TRANSMISSION HAS TO LEARN MY STYLE OF DRIVING. AT 2,00 MILES TRANSMISSION AND ENGINE STILL DON'T TALK TO EACH OTHER. I CAN ACCELERATE AND 5 SECONDS OR MORE LATER THE TRANSMISSION REACTS. IN HEAVY TRAFFIC, A COUPLE OF CARS GET BETWEEN ME AND THE CAR I WAS FOLLOWING BEFORE IT REACTS AND I HAVE TO SLAM THE BREAK. ALWAYS SEEMS TO BE IN THE WRONG GEAR. WILL CHUG A LOT UNTIL IT GETS UP TO THE SPEED FOR THAT GEAR. TOOK IT TO DEALER AT OIL CHANGE AND THEY RESET THE CONTROL MODULE. AFTER 2,000 MORE MILES, TOOK IT BACK BECAUSE IT STILL ACTED THE SAME WAY. TOOK TECH ON DRIVE AND WAS ABLE TO DUPLICATE ALL MY CONCERNS. HE SAID THAT THERE WAS NOTHING HE CAN DO AND THAT I NEEDED TO WAIT FOR ECM CALIBRATION FROM GM. HE SAID HE FELT BAD FOR ME. SURELY I WILL GET IN AN ACCIDENT BECAUSE OF THIS SLOW TRANSMISSION THAT IS ALWAYS IN THE WRONG GEAR. CURRENTLY I AM AT 7,000 MILES. THE ONLY THING THE TECH COULD SAY WAS NOT TO DRIVE IT IN STOP AND GO TRAFFIC....SERIOUSLY. CLEARLY THIS ADAPTIVE TRANSMISSION IS BULL CRAP AND GM PROBABLY KNOWS THEY HAVE A PIECE OF CRAP PROGRAMMING BUT CAN'T FIGURE IT OUT. PLEASE FIGURE OUT THIS SHIFTING PROBLEM, BECAUSE OTHER THAN THIS THE TRUCK IS NICE...TOO BAD, BECAUSE IF THEY DON'T SOMEONE WILL GET IN AN ACCIDENT AND HOPEFULLY IT WILL NOT BE FATAL. GET REAR ENDED BECAUSE IT DOESN'T ACCELERATE WHEN YOU NEED IT TO, OR IT FINALLY MOVES WHEN YOU ARE NEEDING TO BREAK. FIX THIS NOW OR AT SOME POINT YOU WILL PAY BIG....

PURCHASED 2015 COLORADO IN AUGUST. WHILE DRIVING IT I HAVE NOTICED THERE IS A PROBLEM WITH THE TRANSMISSION AND ENGINE SYNCHRONIZATION BETWEEN DOWN SHIFTING AND MAINTAINING PROPER RPM'S. WHEN DRIVING A STEADY SPEED IN TRAFFIC AND YOU NEED TO SPEED UP A LITTLE THE TRANSMISSION DOES NOT DOWN SHIFT. WHEN YOU GIVE IT GAS TO SPEED UP THE ENGINE THE RPMS ARE TO LOW AND THE ENGINE BUCKS AND IS LUGGING VERY BADLY. YOU ARE AT A POINT IT FEELS LIKE IT WILL STALL. THIS LUGGING HAS TO BE BAD FOR ENGINE. IF YOU PRESS DOWN HARDER ON THE ACCELERATOR THE TRANSMISSION WILL DOWN SHIFT SUDDENLY AND THE TRUCK WILL SURGE FORWARD QUICKLY. I HAVE ALMOST RUN INTO THE REAR OF VEHICLES WHILE IN TRAFFIC AND TRYING TO MAINTAIN FLOW SPEED.

I BOUGHT A 2015 CHEVY COLORADO AT THE BEGINNING OF THE YEAR - SINCE THEN I WOULD ON OCCASION NOTICE A "SHUDDER" OR SLUGGISH ACCELERATION FOLLOWED BY SUDDEN BURST OF RPMS/ACCELERATION. AT ABOUT THE 3 MONTH MARK (AROUND 4500 MILES) MY TRANSMISSION FAILED AND WAS REPLACED. ABOUT A 3/4 OF A MONTH LATER I GOT MY TRUCK BACK AND CONTINUED TO NOTICE THE SAME SHUDDER AND ERRATIC BEHAVIOR. I BEGAN TO RESEARCH THE ISSUE AND FOUND MANY DRIVERS OF THIS AND THE GMC MODEL ARE ENCOUNTERING THE SAME ISSUE. I HAVE HAD TO NAG THE DEALERSHIP ABOUT THE ISSUE AND THERE EVENTUALLY WAS A TCM (TRANSMISSION CONTROL MODULE) SOFTWARE UPDATE WHICH SEEM TO MAX THE ISSUE WHICH IS BEGINNING TO MANIFEST ITSELF AGAIN. THE SHORT VERSION OF SYMPTOMS IS AS FOLLOWS: SUDDEN ACCELERATION AT SLOW SPEEDS (THIS CAUSED ME TO ALMOST HIT A MOTORCYCLIST IN SLOW MOVING TRAFFIC), ODD GEAR SHIFTING (OR LACK OF) GOING UP HILLS, OR GOING DOWN HILLS, SOMETIMES TURNING... ODD SHIFTING AT NORMAL SPEEDS (BUT NORMALLY ON HILLS). VIBRATION AT NORMAL DRIVING SPEEDS THAT SEEMS TO COME FROM UNDER THE TRUCK (NOT THE TIRES)? I'M FINDING THE TRUCK TO BE MORE AND MORE UNPREDICTABLE AND AM NOT SURE I WONT ENCOUNTER ANOTHER FAILURE IN THE NEAR FUTURE.

RETURNING TO WORK AFTER LUNCH BREAK. POWER STEERING FAILS AT ABOUT 45 MPH. 3RD TIME THAT THIS HAS HAPPENED. TOOK IT TO DEALER THE FIRST TIME AND WAS TOLD PROBLEM WAS SOLVED. TURNING TRUCK OFF AND ON AGAIN TEMPORARILY RESOLVES THE PROBLEM. TOOK TO DEALER AGAIN TODAY AND WAS TOLD THEY NEED TO ORDER MORE PARTS. HAVE FOUND MANY OTHER INSTANCES OF THIS TRUCK HAVING SIMILAR ISSUES ONLINE.

EXPERIENCED SUDDEN LOSS OF EPS(POWER STEERING) AFTER @ 30 MINUTES OF DRIVING: SYMPTOMS: SUDDEN LOSS OF POWER STEERING ALERT MESSAGE: SERVICE POWER STEERING DRIVE WITH CARE STABILITRACK AND TRACTION CONTROL DASH LIGHTS ON BACKUP CAMERA OK BUT NO GUIDE LINES MESSAGE ON SCREEN: VEHICLE GUIDING LINES UNAVAILABLE CODE SCANNER/READER SHOWS NO CODES. AFTER ENGINE RE-START: SERVICE STABILITRACK MESSAGE APPEARS FOR A BRIEF PERIOD, AGAIN, NO CODES. POWER STEERING WILL BE FINE AGAIN FOR A WHILE. PROBLEM REPEATED AFTER ANOTHER 30 MINUTE DRIVING. AGAIN, RESTART CLEARED THE PROBLEM. SEVERAL RECALLS FOR SIMILAR PROBLEM WITH GM VEHICLES: NHTSA CAMPAIGN'S: 14V719000, 14V395000 & 14V153000. NOTHING FOR COLORADO.

I WAS DRIVING ONTO AN EXIT RAMP AND FELT THE STEERING GET STIFF. THE INFORMACTION SCREEN ABOVE THE STEERING WHEEL FLASHED YELLOW LIGHTS AND THE MESSAGE "SERVICE POWER STEERING, DRIVE SAFELY". I PROCEEDED TO GRIP THE STEERING WHEEL HARDER AND SLOW DOWN TILL I COULD SAFELY PULLOVER. THE BACKUP CAMERA ALSO STOPPED WORKING, WHICH MAKES ME THINK THIS IS AN ELECTRICAL ISSUES SINCE THE CAR HAS ELECTRICAL POWER STEERING. ONCE I TURNED THE CAR OFF AND ON BACK TO NORMAL BUT THIS SEEMS TO BE AFFECTING OTHER 2015 COLORADO AND GMC CANYONS. DUE TO THE WEIGHT AND SIZE OF THIS VEHICLE THIS ISSUE CAN CAUSE A MAJOR AND FATAL ACCIDENT.