Operator reported that under braking, they lost all power assist to the brake pedal and brake pedal was extremely hard to push. This resulted in extended stopping distance and difficulty slowing the vehicle down. It was found that the vacuum pump had failed. We are a large utility fleet, and this issue has occurred a number of times to our Chevrolet Colorado/GMC Canyon vehicles and we deem this a safety issue. These incidents have been reported to the OEM and we recently received the attached reply, "We submitted a “Speak up for Safety Campaign” to our internal quality team for review. These reviews are conducted to determine if there is a manufacturing or design defect that could impact quality. After review, the case was closed with no action to be taken." The operators receive no warning prior to the failure.
| VIN Pattern | 1GCHTBEA*G1****** |
| Drive Type | 4WD/4-Wheel Drive/4x4 |
| Gross Vehicle Weight Rating | Class 1D: 5,001 - 6,000 lb (2,268 - 2,722 kg) |
| Manufacturer | GENERAL MOTORS LLC |
| Make | CHEVROLET |
| Model | Colorado |
| Model Year | 2016 |
| Series | Work Truck |
| Body Cab Type | Extra/Super/Quad/Double/King/Extended |
| Body Class | Pickup |
| Vehicle Type | TRUCK |
| Engine Model | LCV - SIDI; DCVCP; VVT; E85 MAX, E0-E100, ALUM |
| Engine Configuration | In-Line |
| Engine Displacement (L) | 2.5 |
| Engine Displacement (CC) | 2500 |
| Engine Displacement (CI) | 152.559 |
| Primary Fuel Type | Gasoline |
| Brake System Type | Hydraulic |
| Tire Pressure Monitoring System (TPMS) | Direct |
| Front Air Bags | 1st Row (Driver and Passenger) |
| Side Air Bag | 1st Row (Driver and Passenger) |
| Curtain Air Bags | All Rows |
| Seat Belts | Manual |
| Plant Company Name | GMNA |
| Plant City | WENTZVILLE |
| Plant State | MISSOURI |
| Plant Country | UNITED STATES (USA) |