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Tahoe / Yukon Service Manual

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Starting and Charging Schematics

Figure 1: Starting (L84/L87) Figure 2: Starting (LM2) Figure 3: Charging Figure 4: Stop/Start System

Last updated: Aug 7, 2026

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Starting System Description and Operation

Safety notice.Service procedures involve real hazards — hot surfaces, high‑pressure fluids, stored energy in springs and airbags, and high‑voltage systems.Always follow the WARNING and CAUTION notices in the original text.Improper repair can cause serious injury, death, or vehicle damage. This site mirrors factory documentation for reference; you are responsible for the safe execution of any procedure. Use appropriate PPE, torque to spec, and never bypass safety systems.

Content extracted from the official GM factory service manual (document ID 15530883). All rights to the original text and diagrams belong to General Motors. This site is an unofficial technical reference — not affiliated with, endorsed by, or supported by GM.