8.5% of complaints about the 2020 Chevrolet Colorado came in the first year, which is unremarkable for a 2020 vehicle — around the middle of the 178 model-years on record. The median complaint arrives at 4.4 yr in service. The most-reported system is power train (33 complaints), typically at 4.4 yr or about 40,000 miles.
WHILE BEGINNING TO ACCELERATE AFTER STARTING THE VEHICLE, I NOTICEABLE SOUND THAT IS BEST DESCRIBED AS 'WATER RUSHING' IS HEARD FROM BEHIND THE PASSENGER-SIDE DASH AREA. AFTER CONDUCTING SOME RESEARCH I HAVE NARROWED IT DOWN TO THE ISSUE OF AIR TRAPPED IN THE COOLANT SYSTEM. ISSUE IS ISOLATED TO THE AREA OF THE HEATER CORE. HAVE ALSO SEEN MENTIONS OF SERVICE BULLETINS WHERE, IF THE VEHICLE IS UNDER WARRANTY, IT CAN BE BROUGHT IN AND THE TANK CAN BE DRAINED AND REFILLED PROPERLY.
WHILE STARTING TO DRIVE THE VEHICLE A GUSHING WATER SOUND IS COMING FROM BEHING THE DASH.
MY 2020 COLORADO HAS A SLOSHING SOUND COMING FROM PASSENGERS FRONT GOING TOWARDS BACK WHEN ACCELERATING. ALSO THE TRUCK HAS BEEN GOING OUT OF ALIGNMENT SINCE THE DAY I GOT IT. DEALER CLAIMS 'REAR THRUST ANGLE NOT ALIGNED FROM FACTORY' EVERY MONTH I HAVE BEEN BACK TO GET IT REALIGNED
THE VEHICLE IS EXPERIENCING A SHAKE AND/OR SHUDDER DURING LIGHT THROTTLE ACCELERATION BETWEEN 25 AND 80 MPH STEADY STATE DRIVING WHEN TRANSMISSION IS NOT ACTIVELY SHIFTING GEARS. THE CONDITION IS AS IF I WERE DRIVING OVER RUMBLE STRIPS. TSB 18-NA-355 ADDRESSES THIS ISSUE IN 2017 - 2019 CHEVY COLORADO PICKUP TRUCKS WITH THE 8 SPEED TRANSMISSION. THE 2020 MODEL SHOULD BE ADDED AS IT DOES NOT APPEARED TO BE FIXED AT THIS TIME. I PURCHASED THIS VEHICLE BRAND NEW FROM THE FACTORY WITH ONLY 5 MILES ON IT. THE SHUDDER ISSUE HAS BEEN PERSISTENT FROM THE VERY FIRST DAY I DROVE IT.