Dorman - OE Solutions Transfer Case Switch P/N:600-552
Replace a worn 4WD vacuum switch with this Dorman switch: the Dorman - OE Solutions Transfer Case Switch 600-500, designed as a direct replacement for the original equipment switch. It fits many vehicles, among them the 1995-2005 Chevrolet Blazer, 1983-2004 Chevrolet S10 and 1991-2004 GMC Sonoma. See the "Vehicles it fits" section for the full list and engine details.
Dorman lists this transfer case switch as a 4WD vacuum switch. It works within your vehicle's four-wheel-drive system when 4WD is selected or deselected.
Signs this switch may need replacing include four-wheel drive that won't engage or disengage properly, or a 4WD system that works only intermittently. Other components in the 4WD system can cause the same symptoms, so diagnose the cause before replacing the switch.
Interchange: FWD-18 · TCA-2
FWD16 · 15664811 · 89059420 · 1S3164 · FWD18 · TCA2
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
What does the Dorman 600-500 transfer case switch do?
It is a 4WD vacuum switch that works within the four-wheel-drive system. Dorman designed it to directly replace the original equipment switch on the listed applications.
Does this switch fit a 1995-2005 Chevrolet Blazer?
Yes. The 1995-2005 Chevrolet Blazer is a listed application, along with the 1983-2004 Chevrolet S10 and 1991-2004 GMC Sonoma. Check the "Vehicles it fits" section for the full list.
What are signs the 4WD vacuum switch may need replacing?
Signs include four-wheel drive that won't engage or disengage properly, or that works only intermittently. Other 4WD components can cause similar symptoms, so diagnose the cause first.
Which interchange numbers does the 600-500 replace?
It cross-references to FWD-18, TCA-2, FWD16, 15664811, 89059420 and 1S3164.
How is the quality of this Dorman switch backed?
Dorman says the switch is built for reliable longevity and free of defects in materials and craftsmanship. It is backed by a team of designers and engineers in the United States.
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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.