Intermittent no crank/no start condition on 2017 Yukon XL Denali requiring 50+ key presses to start, with no reliable diagnosis procedure.
Existing diagnostic tools (GDS2) cannot capture the intermittent failure state because the vehicle starts when connected, preventing data collection during the failing condition. No solution for reliable replication or remote monitoring.
Workarounds Described
- Presses key over 50 times to eventually start
- Probes connectors and fuse boxes mechanically to find loose connections
- Attaches laptop running GDS2 and hopes car fails while connected
Implied Software Gaps
- Mobile app that triggers recording when no-crank occurs and stores vehicle data without requiring laptop connection
- Automated analysis of circuit patterns to pinpoint intermittent open or high resistance
Intermittent Fault Recorder Pro
A continuous data logging device that plugs into the OBD-II port and monitors key circuits (starter enable, BCM outputs, anti-theft, voltage) while the vehicle is driven normally. When a no-crank event occurs, it locks the preceding 30 seconds of data and alerts the user via phone. No need to have a laptop connected. Cloud dashboard to review waveforms and correlate with ambient conditions.
- Continuous 24/7 logging of starter enable circuit, BCM status, and anti-theft state
- Automatic event capture on no-crank condition with pre-trigger buffer
- Wireless data sync to cloud dashboard with timeline viewer
- Vehicle profile setup with VIN-based wiring reference
- Smartphone app with real-time notifications and event tagging
- Exportable logs for sharing with mechanics
Existing Solutions Mentioned
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