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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine Controls - System/Component Tests) >> Miscellaneous ECM Controls >> Transmission (C-8) >> Torque Converter Clutch (TCC) Solenoid

Torque Converter Clutch (TCC) Solenoid

WARNING: This page does not describe the selected car, but rather 35 other vehicles, including the 1992 Pontiac Trans Sport, 1992 Oldsmobile Silhouette, 1992 Oldsmobile Bravada, 1992 GMC Yukon, and 1992 GMC Vandura Special. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect harness connector to TCC solenoid. Measure resistance between TCC solenoid terminals "A" and "D". See Fig 1 - Fig 4 . Solenoid resistance should be greater than 20 ohms.

Fig 1: TCC, Schematic (2.5L & 2.8L)
G90A15750Courtesy of GENERAL MOTORS CORP.
Fig 2: TCC, Schematic (3.1L)
G92A22160Courtesy of GENERAL MOTORS CORP.
Fig 3: TCC, Schematic (3.8L)
G92H22159Courtesy of GENERAL MOTORS CORP.
Fig 4: TCC, Schematic (4.3L Turbo PFI)
G91F13727Courtesy of GENERAL MOTORS CORP.
Fig 5: TCC, Schematic (4.3L & V8 W/O 4L80-E Trans.)
G90B15751Courtesy of GENERAL MOTORS CORP.
NOTE: Some solenoids have an internal pressure switch in series with the solenoid winding and will not show continuity until transmission hydraulic pressure is applied.
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