Keep your four-wheel-drive system communicating with the Standard Ignition 4WD Switch (MPN TCA-43), an electrical switch built to replace a worn or failed original in your truck's 4WD circuit. It's a direct-fit replacement for the 1998-1999 Chevrolet K1500, 1998-1999 Chevrolet K1500 Suburban, 1998-2000 Chevrolet K2500, 1998-1999 Chevrolet K2500 Suburban, 1999-2000 Chevrolet K3500, 1998-1999 Chevrolet Tahoe, 1998-1999 GMC K1500, 1998-1999 GMC K1500 Suburban, 1998-2000 GMC K2500, 1998-1999 GMC K2500 Suburban, and the 1998-1999 GMC Yukon.
- Switch function: Opens or closes its electrical circuit to signal the state of the four-wheel-drive system.
- Direct replacement: Installs in place of the original switch for the listed applications.
- Restores the signal path: If a faulty original switch is the cause of your 4WD circuit trouble, this replaces it.
Over time an electrical switch can wear internally or lose continuity, which may show up as an inconsistent 4WD indicator or a circuit that no longer reads switch position correctly. Because those signs can also come from wiring, connectors, or other components, diagnose the cause before replacing. When the switch itself is at fault, this Standard Ignition unit brings the circuit back to a known-good part.
Interchange: Manufacturer part number TCA-43.
