General Motors — Rheostat Removal (In-Tank)
A General Motors service procedure — check it applies to your exact model before use.
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Procedure
- Drain the fuel tank, refer to Fuel Tank Draining Procedure.
- Remove the multivalve assembly from the tank refer to Multivalve Removal.
- Reach into the tank and disconnect the electrical connector at the Rheostat.
- Remove the two (2) retaining nuts from the float and Rheostat mounting bracket.
- Remove the float assembly and Rheostat.
- Remove the plastic rheostat cover from the Rheostat.
Source: manual:FuelSystem.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.