Uncertain about whether to drop the fuel tank to replace the pump on a 2020 GMC Terrain that cranks but won't start, due to conflicting advice on programming and lack of diagnostic skills.

Existing solutions require technical expertise (multimeter) or rely on conflicting opinions from online forums without definitive guidance.

Severity

3Medium

Willingness to Pay

implied

Added

May 13, 2026

Workarounds Described

relies on forum advice with conflicting opinions
uses multimeter but admits lack of knowledge to interpret readings

Implied Software Gaps

Guided diagnostic tool that interprets OBD-II and CAN data without requiring multimeter expertise
Centralized, verified repair database that resolves conflicting online advice

App Concept

DiagnosticDrive

An AI-powered diagnostics app that guides users through step-by-step troubleshooting for common vehicle issues, providing clear, verified procedures and part recommendations. No multimeter required—uses onboard diagnostics and guided visual checks.

Key Features

Onboard OBD-II and CAN bus signal interpretation
AI-driven step-by-step diagnostic flow based on symptoms and error codes
Part verification with cross-referencing and compatibility checks
Video tutorials for common procedures (e.g., fuel pump replacement)

Target Users: DIY vehicle owners and backyard mechanics working on domestic and import cars, especially those without formal training.

Revenue Model: $14.99/month subscription or $4.99 per diagnostic session

Existing Solutions Mentioned

multimeteronline forums

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