This service bulletin provides service procedure information to correct a customer concern of Shift to Park Displayed on DIC When Vehicle is in- Park, No Start - DTC B000A Set.
full bulletin at NHTSA ↗2022 Chevrolet Trailblazer electrical problems
moderate 14 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Complaints
14
Recalls
0
Avg fix
$850
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical 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 service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
full bulletin at NHTSA ↗The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
full bulletin at NHTSA ↗This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
full bulletin at NHTSA ↗This service bulletin provides repair information to correct a customer concern of Vehicle Will Lock and Unlock (Active Functions Work) but Will Not Crank or Start (Loss of Passive Functions Do Not Work).
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Door lock actuators are failing on both fronts and rears, sometimes within a year of purchase. One owner was told by the dealership this is a common problem. Doors may fail to unlock during emergencies, appear locked when they're not, or lock and unlock erratically while driving—all genuine safety and security hazards for passengers and vehicle security.
The 'Shift to Park' message dominates these complaints. Owners shift to park, try to shut off the engine, and the dashboard says "Shift to Park" anyway. The vehicle won't shut off until the message goes away. Owners report this starting between 19,700 and 29,700 miles and getting worse—some now experiencing it almost every drive. Temporary workarounds include shifting through gears multiple times, wiggling the shift knob, or manually bending the park switch under the console (lasts about a week). One owner had to restart and move the car 11 times to get it to shut off. Dealers report parts unavailable and say it's covered under a service bulletin, but many are refusing warranty repair. One owner notes a recall is coming for the following year model but their VIN isn't listed.
Key stuck in ignition is reported once, making the vehicle accessible to theft or child access, with doors unable to lock.
Same Chevrolet Trailblazer electrical reports on nearby years: 2021 · 2023
Failure modes owners describe
Door Actuator Failure
Front and rear door lock actuators failed prematurely on certified preowned and new vehicles. Owners report both sides affected, creating safety and security hazards including potential passenger entrapment, erratic locking/unlocking behavior while in motion, and false-lock appearance.
When: Less than 1 year from purchase on CPO vehicle; rear failure reported 4 months after front repair
Symptoms owners cite: Door locks and unlocks not functioning properly; Both front and rear door actuators failed; Erratic locking/unlocking behavior while driving; Door appearing locked when mechanism did not engage
Repairs/costs cited: Dealership repair performed; owner noted dealership stated this was a common problem
Recalls/TSBs owners mention: Owner states GM is already tracking this issue; common among owners reporting
Shift to Park Message / Vehicle Will Not Shut Off
Dashboard displays 'Shift to Park' or 'Shift Lever to Park' message even when transmission is in park, preventing vehicle shutdown. Occurs repeatedly and requires multiple workarounds including shifting through gears, wiggling shift knob, or manual manipulation of park switch. Mileage range 19,700 to 45,000 miles. Owner manually bent park switch as temporary fix lasting about one week.
When: Starts between 19,700–29,700 miles; occurs almost every drive in some cases
Symptoms owners cite: 'Shift to Park' message displayed when vehicle already in park; Vehicle will not turn off until message clears; Radio and lights may not turn off immediately; Message persists despite correct park position; Requires repeated gear shifting or shift knob manipulation to clear
Repairs/costs cited: Manual bending of park switch provides temporary 1-week relief; dealer reports parts unavailable; one case required 11 restart/move cycles to clear message
Recalls/TSBs owners mention: Service bulletin exists for issue; warranty expired on some vehicles so dealer refused repair; one owner notes recall pending for following year model but VIN not listed in recall; extended warranty offered on 2021 model but not 2022
Key Stuck in Ignition
Key cannot be removed from ignition on multiple occasions with both keys affected. Security issue as vehicle becomes accessible to unauthorized users including children, and doors will not lock when key is stuck.
When: Numerous occasions reported; no mileage specified
Symptoms owners cite: Key cannot be removed from ignition; Issue occurs with both keys; Doors will not lock when key is stuck; Vehicle accessible to theft or child access
Repairs/costs cited: Mechanic unable to find fix
Synthesized from 14 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had electrical trouble with your 2022 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 electrical problem on the 2022 Chevrolet Trailblazer?
It's a documented issue but not catastrophic. 14 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Based on the 14 complaints filed, electrical issues most often appear around 45,000 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 $850 for electrical 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 electrical?
No active recalls currently cover electrical 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/2022/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.