Description
Warranty & Shipping
Product Reviews
Q&A
Vehicle Fit

Specifications:

  • Dash Mounted 4WD (Four Wheel Drive) Switch
  • Replaces dealer part numbers: 15136040
  • Three selection dash control (2HI, 4HI, 4LO)
    • Fits models with Manual Electric 4WD Transfer Case - RPO Code "NP1"
  • Direct replacement
  • Built to strict quality control standards

NOTE: If you have any questions about this fitting your application, please call your local GM dealer with the above part numbers.

Our electrical and electronic parts are subject to strict quality control testing. Please ensure proper diagnosis of this item before purchasing as the item cannot be returned once installed or plugged in.

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Lead and Lead Compounds, 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.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

5.00/ 5.0
2 reviews
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Addressed my issue...
I recently bought an 04 GMC Sierra Duramax. During the test drive, the Service 4WD warning came on. I bought the truck a bit below the asking price for this reason with the thought it may simply be the 4WD switch. The Service 4WD warning has yet to come back on, so far so good. Thank You 1A-Auto for your quality parts, great prices and awesome standard shipping promptness!
July 23, 2017
Best option
After watching the 1A Auto video about my non shifting problem I chose to purchase this switch. Easy install thanks to the video and the problem is solved. Thanks so much for the video the right part and speedy delivery.
August 2, 2018
Will this fit my car? Add a vehicle to make sure
Customer Q&A
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Year Make Model Description
2003-2004Chevy Avalanche 1500 Chevy Avalanche 1500 Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2004Chevy Silverado 1500 Chevy Silverado 1500 Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003Chevy Silverado 1500 HD Chevy Silverado 1500 HD Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2004Chevy Silverado 2500 Chevy Silverado 2500 Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2006Chevy Silverado 2500 HD Chevy Silverado 2500 HD Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2007Chevy Silverado 2500 HD Classic Chevy Silverado 2500 HD Classic Four Wheel Drive Switch with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2006Chevy Silverado 3500 Chevy Silverado 3500 Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2007Chevy Silverado 3500 Classic Chevy Silverado 3500 Classic Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2006Chevy Suburban 1500 Chevy Suburban 1500 Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2006Chevy Suburban 2500 Chevy Suburban 2500 Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2004Chevy Tahoe Chevy Tahoe Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2004GMC Sierra 1500 GMC Sierra 1500 Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003GMC Sierra 1500 HD GMC Sierra 1500 HD Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2004GMC Sierra 2500 GMC Sierra 2500 Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2006GMC Sierra 2500 HD GMC Sierra 2500 HD Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2007GMC Sierra 2500 HD Classic GMC Sierra 2500 HD Classic Four Wheel Drive Switch with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2004GMC Sierra 3500 GMC Sierra 3500 Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2004GMC Yukon GMC Yukon Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2006GMC Yukon XL 1500 GMC Yukon XL 1500 Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
2003-2006GMC Yukon XL 2500 GMC Yukon XL 2500 Four Wheel Drive Switch for Models with RPO Code NP1 (Electric Shift, 2 Speed Transfer Case)
Only 1 left in stock
Part #: 1AFWM00043


Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout