This bulletin advises the tech to replace the starter and not the trans if grinding or growling is heard from the transmission area.
full bulletin at NHTSA ↗2024 Chevrolet Colorado powertrain problems
moderate 13 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
13
Recalls
0
Avg fix
$2,500
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
full bulletin at NHTSA ↗This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, Engagement/Disengagement/Ratcheting Concerns.
full bulletin at NHTSA ↗This service bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
full bulletin at NHTSA ↗This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2024 Colorados report transmission problems ranging from inability to shift out of a gear at 3500 RPM to abrupt hard downshifts when braking, with the vehicle sometimes lurching forward even as the driver applies the brakes. Check engine lights and transmission codes (P0700, P2796, P0658, P2729, P281D) show up repeatedly, and multiple owners took vehicles back to dealerships multiple times without permanent fixes.
A separate widespread issue involves upper radiator hose fittings leaking coolant due to degraded O-ring seals. GM issued a technical bulletin acknowledging the problem, but replacement hoses are on nationwide backorder with wait times of 1-2+ weeks. Owners report loss of cabin heat and cooling fan running constantly. Some dealers deny warranty coverage, calling the cooling system a wear item despite the defect appearing in vehicles with as few as 40,000 miles or within the first year.
Engine and transmission control faults trigger repeated check engine lights, causing unexpected deceleration that makes vehicles unresponsive to throttle input. One owner reported losing power at 3840 miles on a mountain grade. Brake pedal problems, including sponginess and loss of feel, have also been reported alongside electrical faults (OnStar theft alerts, battery warnings, unintended seat belt activation). Loss of speed signal at highway speeds triggers reduced acceleration warnings; one vehicle returned to a dealer after claiming repair and failed again within 2 miles. Owners repeatedly cite slow or nonresponsive GM escalation when dealers cannot fix issues.
Failure modes owners describe
Transmission shift malfunction and stalling
Transmission fails to shift properly or gets stuck in a single gear at elevated RPMs, unresponsive to manual shifter input. Multiple complaints describe the vehicle becoming unable to shift under load, creating dangerous situations when power is needed.
When: Multiple reports indicate issues within first year of ownership; one complaint at 150 miles, another at 3000+ miles, another at 3840 miles
Symptoms owners cite: Check engine light (codes P0700, P2796 reported); Transmission stuck in gear at 3500 RPM or higher; Manual shifter unresponsive; Abrupt hard downshift from 2nd to 1st gear with shuddering and transmission knocking; Transmission valve body malfunction; Vehicle loses forward and reverse motion
Codes mentioned: P0700, P2796, P0658, P2729, P281D
Repairs/costs cited: Dealers have performed multiple failed repair attempts; transmission valve body replacement reported in at least one case; full transmission removal and rear main seal replacement performed in one case
Recalls/TSBs owners mention: GM issued bulletin for rear main oil seal and gasket failure due to faulty parts from original manufacturing plant; GM opened case for ongoing speed signal/reduced acceleration issue; multiple dealer repair attempts have failed to resolve issues
Radiator and heater hose O-ring seal failure with coolant leaks
Upper radiator hose fitting develops coolant leaks caused by degraded or failing O-ring seals. Parts are on nationwide backorder. Issue renders vehicles inoperable due to low coolant and loss of climate control. Dealers aware of issue and have issued technical bulletin.
When: Early ownership; one complaint notes 40,000 miles on vehicle when issue identified, but appears to be a quality issue rather than wear at that mileage
Symptoms owners cite: Check engine light (low coolant related); Coolant leaking from upper radiator hose fitting; Loss of cabin heat or intermittent heating (warm air only half the time); Radiator cooling fan running constantly at high speed; Vehicle overheating potential
Repairs/costs cited: Upper radiator hose and coolant hose replacement required; parts on nationwide backorder with 1-2+ week wait times; warranty coverage denied by some dealers claiming cooling system is not part of engine/drivetrain coverage despite factory warranty being active
Recalls/TSBs owners mention: GM issued technical bulletin acknowledging degraded seal issue; dealers are repairing under warranty where coverage applies; parts availability severely limited nationwide
Engine control and transmission control system faults with reduced power
ECM and TCM faults trigger check engine lights, loss of power, and vehicle deceleration. Codes indicate multiple system failures. Vehicle becomes undrivable with unresponsive throttle.
When: At 3840 miles in one complaint; early ownership in others
Symptoms owners cite: Check engine light with multiple diagnostic codes; Unexpected deceleration despite pressing gas pedal; Vehicle loses power and becomes non-responsive to throttle input; Dashboard lighting up with warning messages; Vehicle undrivable after fault
Codes mentioned: P0700, P0658, P2729, P281D
Repairs/costs cited: Vehicles towed to dealership; one vehicle remained non-drivable after multiple repair attempts
Recalls/TSBs owners mention: GM roadside diagnostics performed; cases opened with manufacturer
Brake system and electrical control faults
Brake pedal becomes spongy and depresses to floorboard with loss of braking feel. Associated with electrical anomalies including OnStar alerts, battery voltage warnings, and unintended seat belt tightening. Forward Collision Avoidance system malfunction.
When: At 8,285 miles
Symptoms owners cite: Brake pedal spongy and depresses to floorboard; Navigation system shut off unexpectedly; Forward Collision Avoidance warning light illuminated; Seat belt tightened while vehicle in park; OnStar alerts for theft and low battery voltage
Repairs/costs cited: Vehicle taken to dealer; issues persisted and were not repaired
Recalls/TSBs owners mention: Manufacturer notified after initial service visit failure
Speed signal loss and electronic stability control failure
Vehicle loses reliable speed signal at highway speeds causing erratic speedometer behavior. Electronic Stability Control and Traction Control systems malfunction. Vehicle experiences reduced acceleration during highway operation. Issue persists after dealer repair.
When: Multiple instances at highway speeds; persistent issue at 21+ days after first repair attempt
Symptoms owners cite: Code P215B; Service ESC warning light; Service Traction Control warning light; Reduced Acceleration warning; Erratic speedometer; Loss of reliable speed signal at highway speeds; Vehicle continues to lose speed signal after repair
Codes mentioned: P215B
Repairs/costs cited: Dealer kept vehicle 15 days and stated repairs were made, but issue returned within 2 miles of pickup
Recalls/TSBs owners mention: GM case opened; issue remains unresolved
Transmission hard downshift and vehicle lunge during braking
Transmission downshifts abruptly with excessive force, causing vehicle to lunge forward. Issue occurs when coming to a stop or during normal braking, raising RPMs even as brakes are applied. Presents significant collision risk.
When: New vehicle in January 2025 and early ownership; another complaint starting at 3000 miles escalating through 4000+ miles
Symptoms owners cite: Abrupt downshift to 1st gear when stopping; Vehicle lurches or surges forward while brakes applied; RPM spike during downshift; Vehicle shudder and transmission knocking (in one case)
Repairs/costs cited: One owner reported transmission valve replacement; another has not taken vehicle to dealer
Synthesized from 13 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had powertrain trouble with your 2024 Chevrolet Colorado?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2024 Chevrolet Colorado?
It's a documented issue but not catastrophic. 13 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Based on the 13 complaints filed, powertrain issues most often appear around 8,285 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2024/Chevrolet/Colorado.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.