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1999 GMC SIERRA 3500
5.7L V8•4WD•gas•L31
3 active safety recalls on this vehicle — view recalls
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Repairs0Labor1052Torque280Fluid20DTC1938Battery2Maintenance0Recalls3
Fluid · A/C Refrigerant

A/C Refrigerant

for 1999 GMC Sierra 3500 5.7L V8 · 4WD
Fluid Type
R-134a

Notes

GMT400 platform, R-134a transition Always verify against the underhood charge label when legible — charge weight is a fill-to spec, not an estimate.

Other fluid systems on this vehicle

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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