What the Colorado eBoost Numbers Actually Show
See which Colorado years fall within NHTSA’s eBoost review, how often assist loss was reported, and which brake symptoms call for immediate action.
NHTSA’s eBoost brake investigation covers 1,164,820 vehicles but contains 745 deduplicated reports of brake-assist loss—about 0.06 reports per 100 vehicles. That is a real defect signal worth investigating, especially for owners of 2023–2026 Chevrolet Colorado trucks, but it is not evidence that most Colorados will experience the problem. Engineering Analysis EA26006 is also an investigation, not a recall or a finding that every listed vehicle is defective (Techlicious).
Choose your Colorado’s model year and symptoms; the decision tree will show whether it is in the reported scope and what to do next.
Select the truck’s model year, then mark only symptoms you have actually observed. The default 2024 Colorado is inside the investigation but has no reported symptom—the distinction behind the complaint-rate math.
A 2024 Colorado is in the reported EA26006 model-year population, but inclusion does not show that this truck is defective. Check the VIN for open recalls and monitor official updates.
- Run the VIN through GM and NHTSA recall lookups.
- Save dated results and retain service records.
- No EA26006 recall or approved remedy appears in the reviewed evidence.
| Model Year | Observed Condition | What It Establishes | Next Step |
|---|---|---|---|
| 2023–2026 | No warning or pedal change | Inside reported scope only; no vehicle-level defect finding | Check VIN, save result and monitor EA26006 |
| 2023–2026 | Message or warning lights; pedal normal | A warning requiring diagnosis, not proof of a spindle fracture | Contact a certified Chevrolet dealer promptly for vehicle-specific advice |
| 2023–2026 | Hard pedal, changed assist or changed stopping | Possible brake-assist problem; consequence matters more than the fleet-wide rate | Stop as soon as safely possible; do not resume the trip; arrange towing or roadside help |
| 2023–2026 | Reported 43-mph restriction | Fault response reported in the wider inquiry; timing relative to assist loss is unresolved | Seek dealer guidance; if braking also changed, stop and tow |
| Outside 2023–2026 | Any brake warning or changed pedal | Outside the reported Colorado model-year scope, but the symptom still needs diagnosis | Do not use investigation scope to dismiss a brake concern; changed braking means stop and seek help |
A clean recall lookup does not remove a truck from an open investigation or rule out a future action. The supplied evidence gives no Colorado-specific VIN range, incident count or failure rate.
Sources: Techlicious summary of NHTSA filing and GM reporting; GM recall portal. Figures cover the full multi-model investigation, not Colorado alone. “~” marks the calculated approximate report rate; unavailable Colorado-only figures are —.
Why the 1.16 Million-Vehicle Headline Sounds Worse Than the Data
The reasonable concern behind the headlines is straightforward. Brake-assist loss can produce a hard pedal, demand unexpectedly greater pedal effort and increase stopping distance. Reports include crashes or fires and injuries, while some drivers allegedly experienced assist loss during an active braking event. NHTSA also elevated the case from a Preliminary Evaluation to an Engineering Analysis, a stage that can precede a recall.
Owners should not dismiss those facts merely because the complaint rate is small. Complaint databases can undercount events, investigation reports are not a controlled failure-rate study, and the consequences of a brake problem can be serious.
What the headline does not establish is that 1.16 million vehicles have failed, are certain to fail or have been recalled. That number is the estimated multi-model population regulators are examining. It covers numerous GM-built vehicles, not 1.16 million Colorados with confirmed defects.
The available figures are 745 deduplicated assist-loss reports among 1,164,820 vehicles, which works out to approximately 0.064%, conventionally rounded to 0.06%. That calculation is a fleet-wide report rate, not a Colorado failure rate. It combines models, years and configurations, and the reports remain allegations under investigation.
The same reporting identifies 22 combined crashes or fires, six injuries and no fatalities across the full population. Another account lists 21 crashes and five injury incidents involving six injuries. The supplied evidence does not resolve the one-event difference because the complete primary filing was not available for review. Neither total is Colorado-specific.
EA26006 Is an Investigation, Not a Recall
The inquiry reportedly began on April 11, 2024, when NHTSA’s Office of Defects Investigation opened Preliminary Evaluation PE24011 following complaints involving loss of brake assistance in 2023 Cadillac Lyriq vehicles.
The review expanded to other vehicles using GM’s electro-hydraulic eBoost system. It was reportedly elevated to Engineering Analysis EA26006 on August 21, 2026, adding 2023, 2024, 2025 and 2026 Chevrolet Colorado trucks to the reported scope (GM-Trucks). Reports published August 24–25 described the expansion, while the latest supplied GM recall-database information was dated August 31.
An Engineering Analysis permits deeper technical examination and additional requests for manufacturer information. It can lead to a recall, a narrower action or closure without a recall. It does not itself create an owner repair, establish a final defect determination or make a recall inevitable.
No recall, official repair campaign or approved EA26006 remedy appears in the reviewed evidence. GM Authority likewise reported no announced remedy when describing the investigation.
The supplied material does not include the complete NHTSA docket or manufacturer submissions. Details about the federal file are therefore attributed to reports summarizing those records rather than presented as an independent review of the full docket.
The Suspected Failure Is an eBoost Spindle Fracture
The issue under examination is loss of brake assistance, not necessarily complete loss of all braking. Brake assist reduces the physical effort required at the pedal. When assistance is reduced or unavailable, the pedal may become much harder and stopping may require greater effort or distance.
GM reportedly associated at least some incidents with fractures in a spindle inside the eBoost unit. That is the manufacturer’s proposed mechanism for some cases, not a final root-cause finding covering every complaint.
GM’s reported sequence is that a spindle can fracture while brake assist, antilock braking, stability control and traction control continue operating until the vehicle comes to a complete stop. Under that account, those functions become unavailable after the stop, accompanied by warnings and a restricted-speed response.
Some driver reports allegedly describe immediate assist loss while the vehicle was already braking. NHTSA escalated the inquiry partly because that sequence appeared inconsistent with GM’s account (The Detroit News).
That discrepancy leaves several matters unresolved: whether all reports involve the same component, whether every spindle fracture follows GM’s sequence, whether another eBoost failure mode exists and which vehicles share the relevant part or design. GM reportedly maintains that the alleged condition does not present an unreasonable motor-vehicle safety risk, but that is GM’s position rather than a final NHTSA determination.
Some wider reporting mentions possible steering-assist effects. The supplied evidence does not clearly establish that issue for the Colorado, so it should not be treated as a confirmed Colorado symptom.
A Changed Pedal Means Stop; A Message Alone Needs Assessment
Reported indicators across the broader eBoost population include:
- A Service Brake System message
- Brake, ABS or traction-control warning lights
- An audible warning chime
- A harder or otherwise changed brake-pedal feel
- Reduced braking assistance
- A reported 43-mph speed limitation
These signs do not prove that an eBoost spindle fractured. Brake warnings can have other causes, and the evidence does not establish exactly when the 43-mph restriction activates relative to assist loss (Pickup Truck Talk). A speed restriction is not an assurance that a truck with changed braking behavior is safe to continue driving.
If the pedal becomes hard, braking assistance changes or the truck does not slow as expected, stop driving as soon as you can do so safely. Do not continue the trip to see whether the condition clears. Arrange roadside assistance or towing and have a certified Chevrolet service department assess the truck.
A Service Brake System message with no detectable pedal or stopping change still requires prompt vehicle-specific advice from a certified Chevrolet dealer. The reviewed evidence contains no authoritative NHTSA or GM instruction saying that every message by itself requires an immediate tow, so the decision cannot be made from the warning text alone. If pedal feel or stopping behavior changes at any point, treat it as the stop-driving condition above.
The supplied evidence does not provide an official emergency pedal technique for this fault. Owners should not substitute generalized online driving instructions for guidance applicable to their particular truck and circumstances.
The Complaint Math Cannot Produce a Colorado Failure Rate
The investigation’s reported numbers apply to a multi-model population spanning Cadillac, Chevrolet, GMC and Buick vehicles, plus the GM-built Honda Prologue and Acura ZDX. It includes both gas-powered and electric models across that wider group.
NHTSA reportedly received 227 owner complaints and identified 531 additional GM reports. Removing duplicates produced 745 incidents. Dividing 745 by 1,164,820 gives the approximate 0.064% report rate, but that calculation has strict limits.
It is not a confirmed defect rate. It does not measure unreported events, distinguish every vehicle’s exposure time or prove that all complaints had the same cause. Most importantly for Colorado owners, no supplied source gives Colorado-only totals for complaints, manufacturer reports, crashes, injuries, fires, confirmed spindle fractures, eBoost replacements or active-stop assist losses.
The evidence also supplies no Colorado-specific VIN ranges, production dates, assembly plants, trims, powertrains, drivetrain distinctions, mileage ranges or component batches. “2023–2026 Colorado” is therefore the reported investigative model-year scope, not a list of trucks confirmed to contain a defective component.
Document the Warning Before the Evidence Disappears
When it can be done safely, record the exact dashboard message, illuminated lamps, warning chime, odometer, approximate speed and whether the truck was starting, moving, slowing or stopped. Note how the pedal differed from normal and whether stopping behavior changed.
Photographs of the instrument panel can help if they can be taken without creating another hazard. Keep dealer appointments, repair orders, diagnostic printouts, invoices, correspondence and case numbers. A repair order saying the dealer could not duplicate the condition still establishes that the concern was reported.
Ask the service department to record observations rather than an unconfirmed diagnosis. “The pedal became unusually hard while slowing, the brake and ABS lamps illuminated, and the truck took farther to stop” is more useful than asserting that the spindle broke without a technician’s finding.
Owners can also file a NHTSA vehicle-safety complaint. Date, speed, warnings, pedal behavior and dealer findings provide investigators with more usable information than speculation about the failed component.
A VIN Search Checks Recalls, Not Investigation Membership
Enter the truck’s 17-character VIN in GM’s official recall search and NHTSA’s official recall lookup. Save a dated screenshot or PDF and repeat the checks while EA26006 remains unresolved.
GM says its search displays incomplete recall repairs for the specific vehicle. It also warns that recently announced recalls may take several days—and, rarely, longer—to appear. The GM recall portal provides the lookup, dealer guidance and Chevrolet customer-service number, 1-800-222-1020.
A clean VIN result means no incomplete recall appeared in that database at that time. It does not prove that a 2023–2026 Colorado is outside the investigation, lacks the system under review or could never enter a future recall. Conversely, model-year inclusion does not establish that a particular truck will be recalled.
Two Existing Colorado Recalls Address Different Problems
EA26006 should not be confused with two separate Colorado recalls.
| Action | Colorado Scope | Issue | Remedy or Status |
|---|---|---|---|
| EA26006 | 2023–2026 | Possible eBoost assist loss | Investigation; no approved remedy |
| 24V133000 | Certain 2023 trucks | Unexpected automatic braking | Camera software update |
| 26V114000 | Certain 2025–2026 trucks | Electronic manual access | Radio reset |
Recall 24V133000 concerned a front-camera module that could falsely detect an obstacle and activate automatic emergency braking. Its listed remedy was a free camera-module software update (The Truth About Cars). That is functionally different from possible loss of eBoost assistance.
Recall 26V114000 concerns radios that were not configured correctly to download the electronic owner’s manual. The remedy is a radio reset, not brake-system work. Colorado recall listings distinguish that action from the earlier automatic-braking recall (Cars.com).
A repair order showing that either recall was completed does not establish that the eBoost unit was inspected or repaired. Check the recall number and defect description rather than relying on a generic “recall completed” entry.
What Owners and Used-Truck Buyers Can Establish Today
A current owner can establish whether the VIN has an open recall, obtain a documented assessment of any warning and preserve evidence for a complaint. No supplied source establishes an approved EA26006 inspection, replacement, reimbursement or warranty program.
A shopper considering a 2023–2026 Colorado should run the VIN through both official recall tools, request the service history and look for repeated brake-warning or diagnostic visits. If an eBoost component was inspected or replaced, request the corresponding repair order. Paperwork for recall 24V133000 is not proof of an eBoost repair.
The evidence does not support different Colorado risk estimates by trim, mileage, build date, powertrain, assembly plant, climate, towing use, off-road use or two-wheel drive versus four-wheel drive. It therefore supports neither a blanket recommendation to avoid every 2023–2026 Colorado nor an assurance that every truck is unaffected.
The defensible position is narrower: these model years are in a serious but still unresolved federal investigation; the available reports amount to roughly 0.06% of the full investigated population; and any changed pedal feel or braking response warrants stopping rather than treating the fleet-wide percentage as personal reassurance.