Standard Ignition 4WD Switch P/N:TCA-74
When your four-wheel drive stops responding the way it should, the Standard Ignition switch TCA-47 is a direct-fit, electrically operated four wheel drive actuator switch built to take the place of a damaged OE unit. It is listed for the 2003-2004 Chevrolet Avalanche 1500, 2003-2006 Chevrolet Avalanche 2500, 2004 GMC Sierra 1500, 2005-2006 Cadillac Escalade, 2005-2006 Chevrolet Silverado 1500 HD, 2005-2006 Chevrolet Tahoe and 2005 GMC Yukon XL 1500. See the Buyer's Guide tab for engine details.
The four wheel drive actuator switch works within the four-wheel-drive actuation system. Signs it may need replacing include four-wheel drive that won't engage or disengage, or a 4WD indicator that behaves erratically. Because these symptoms can have other causes, diagnose the system before replacing the switch.
Interchange: FWD39 · SW8268 · FWD60 · 15136039 · 15164520 · 19259313
This part cross-references / interchanges with the following part numbers:
Does this Tahoe switch fit my 2005 Chevrolet Tahoe?
Yes. TCA-47 is listed for the 2005-2006 Chevrolet Tahoe. See the Buyer's Guide tab for engine details.
What does a four wheel drive actuator switch do?
It is an electrically operated switch that works within the four-wheel-drive actuation system as the system engages and disengages four-wheel drive.
What are signs the 4WD actuator switch may need replacing?
Four-wheel drive that won't engage or disengage, or an erratic 4WD indicator, may be signs of a failed switch. These signs have other possible causes, so diagnose the system first.
What part numbers does TCA-47 interchange with?
It cross-references FWD39, SW8268, FWD60, 15136039, 15164520 and 19259313.
Is TCA-47 built to OE specifications?
Yes. Standard Ignition makes its switches to OE spec for proper fit, form and function, and uses copper alloy conductors for electrical conductivity with low resistive losses.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.