This service bulletin provides information on proper use of floor mats.
full bulletin at NHTSA ↗2021 Chevrolet Trailblazer cruise control problems
severe Owners of the 2021 Chevrolet Trailblazer have filed 3 NHTSA complaints about the cruise control at roughly $600 to repair (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation. See cruise control across all vehicles →
Complaints
3
Recalls
0
Avg fix
$600
1crash
1injury
When does it fail?
Of the 3 cruise control complaints filed for the 2021 Chevrolet Trailblazer, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 5 model years of Chevrolet Trailblazer we track for cruise control problems, this one has the fewest owner complaints on file (3).
No new NHTSA cruise control complaint has been filed on this vehicle in over 5 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering cruise control 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 information communicates to the tech the diagnostic steps if they encounter at condition where the adaptive cruise, regular cruise control or lane keep assist turns on and off while driving or is inoperative.
full bulletin at NHTSA ↗This Preliminary information communicates to the dealer if the lane keep assist and forward collision alert are inoperative, both indicators may be flashing on and off while driving. When pressing button to turn on the lane keep assist they receive a message stating the system is not available. If the above conditions are met to verify that all of the tires are the correct size as per vehicle build. If an incorrect tire side if found on the vehicle it will cause a wheel speed discrepancy on straight road travel that will disable all driver assistance (Front Camera Module) systems relying on wheel speed sensor data inputs. LKA ? Lane Keep Assist LDW ? Lane Departure Warning FCA ? Forward Coll
full bulletin at NHTSA ↗This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Lane Keep Assist and/or Adaptive Cruise Control being Inoperative.
full bulletin at NHTSA ↗This informational bulletin provides information to provide dealership personal the guidelines for determining warranty or non-warranty for side door window glass replacement due to scratches to avoid unnecessary debit.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 1 most recent
Tl* the contact owns a 2021 Chevrolet trailblazer. The contact stated that upon attempting to park her vehicle at 5 MPH, the vehicle independently accelerated forward without warning, jumped the parking median and crashed into a building. The air bags did deploy upon impact. The contact sustained minor bruising from her lap belt but did not need medical attention. The authorities arrived at the…
Had cruise control trouble with your 2021 Chevrolet Trailblazer?
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 cruise control problem on the 2021 Chevrolet Trailblazer?
It's a meaningful issue. 3 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $600.
At what mileage does the cruise control typically fail?
Based on the 3 complaints filed, cruise control issues most often appear around 6,000 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 $600 for cruise control 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 cruise control?
No active recalls currently cover cruise control 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/2021/Chevrolet/Trailblazer.
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.