Carquest Ignition Switch, CSC5038
In stock
$36.99
Listed as compatible with this vehicle by the retailer feed.
Check price2021 GMC Sierra 3500HD Switches & Relays
8 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
Carquest Combination Switch, WWC2007
In stock
$63.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest Headlight Switch, SAC6016
In stock
$75.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest Headlight Switch, SAC6014
In stock
$76.99
Listed as compatible with this vehicle by the retailer feed.
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Dorman Power Seat Switch, 901-271
In stock
$89.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest Door Window Switch, WSE1057
In stock
$232.99
Listed as compatible with this vehicle by the retailer feed.
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Dorman Trailer Tow Harness Connector - Professional appearance, 645-170
In stock
$32.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest HVAC Blower Motor Resistor, RUC2021
Out of stock
$144.99
Listed as compatible with this vehicle by the retailer feed.
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This site contains affiliate links. We may earn a commission if you buy through them. We do not sell these products or guarantee merchant inventory. Compatibility is listed by the retailer feed for this vehicle; it is not an OEM confirmation. Catalog snapshot: Aug 15, 2026.