Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2025TRAILBLAZER RS, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTDRIVERS ASSISTANCE SYSTEMS - ADASDRIVER ASSISTANCE SYSTEMSDIAGNOSTIC INFORMATION AND PROCEDURESADAPTIVE CRUISE CONTROL MALFUNCTIONDIAGNOSTIC AIDS
2025 Chevrolet Trailblazer RS, 4WD
Diagnostic Aids
2025 Chevrolet Trailblazer RS, 4WDSECTION Diagnostic Aids
- Verify the adaptive cruise control is enabled by observing the corresponding indicator and message in the Driver Information Display. Switching between adaptive cruise control and regular cruise control is done by pressing and holding the cruise control cancel button.
- B174W Frontview Camera - Windshield Mounting: Inspect the B174W Frontview Camera - Windshield to ensure the is attached properly to the camera bracket. Additionally, ensure the camera bracket is properly secured to the windshield in the correct location. This is especially important if the vehicle has had a replacement windshield installed, as bracket placement and glass location within the windshield frame of aftermarket windshields may cause issues with system operation. Calibrate the B174W Frontview Camera - Windshield after any repair. Refer to Front View Camera Module Learn
- Visually inspect the vehicle for any aftermarket add on equipment like bug deflectors, windshield tint/banners, grille emblems, push bars, license plates, etc. These items could block the view of the B174W Frontview Camera - Windshield. Discuss with the customer to determine if the concern began after the installation of the aftermarket equipment. Remove any aftermarket items and retest system for proper operation.
- The B174W Frontview Camera - Windshield is continuously monitoring for a blocked condition and if it determines its ability to "see" clearly is compromised, the B174W Frontview Camera - Windshield may become unavailable. When this occurs, adaptive cruise control will disengage and/or no cruise engagement with an "Adaptive Cruise | Temporarily Unavailable" message on the driver information center. The B174W Frontview Camera - Windshield cannot see through objects or debris, so the camera can become visibly blocked. It is important to understand that disabling the adaptive cruise control as a result of camera blockage, is a normal function of the system and is intended to protect the driver from compromised system performance.
- Foul weather: Weather such as snow, ice, heavy rain, road spray conditions may limit the ability of the B174W Frontview Camera - Windshield to "see". Also, a buildup of mud, snow, frost, dirt, bugs, etc. on the windshield can cause a blockage. One example, if the windshield has a buildup of frost/snow/ice which covers the front camera, the system may detect a blockage and disable the adaptive cruise control. After the defroster warms the windshield and melts away the frost/snow/ice, the system will become operational. This example may appear to be an intermittent issue.
- Dark Rural Areas: In very dark rural areas, the B174W Frontview Camera - Windshield may detect a blockage.
- Very High Ambient Temperatures: Very high ambient temperatures may affect B174W Frontview Camera - Windshield operation.
- Barren Environments: As part of the blockage detection algorithm, the B174W Frontview Camera - Windshield may conclude it is blocked if the radar does not "see" anything over a period of time. This can happen when driving in very bare environments, such as deserts and rural areas where there are no large objects to detect like other vehicles, bridges, building, trees, signs, mail boxes, guard rails, etc. In these cases, if the system does not detect an object within approximately 60 seconds or 2 km (1.2 miles), adaptive cruise control will be disengaged and an "Adaptive Cruise | Temporarily Unavailable" message will be displayed on the driver information center. If there were other vehicles on the road for the radar to detect there would not be any issues.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.