Home | GMC | 1989 GMC P4500 P4T042 3.4L (L634T-A) Turbocharged DIESEL OEM Repair Service Data Manual and Parts Catalog
1989 GMC P4500 P4T042 (3.4L (L634T-A) Turbocharged DIESEL) – OEM service data and parts catalog. Wiring diagrams, DTC codes, labor times, torque specs. AI-powered. Try free.
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