2012 Chevrolet Colorado Alternators

Genuine GM alternators for the 2012 Chevrolet Colorado, at wholesale prices. Alternator output rating varies by electrical load, so a truck with a tow package or upfit wiring takes a different unit. GMT355 through 2012, the 31XX mid-size from 2015 to 2022, and a new generation from 2023. There were no 2013 or 2014 model years.

When you need them

A battery light, dimming headlights at idle, or a no-start after a short drive. On a mid-size pickup, box length and cab style drive more part number splits here than the engine does.

Buying OEM, briefly

• Factory warranty. Genuine alternators carry GM coverage aftermarket cannot match.
• Dealer parts, not dealer prices. Compare our alternators pricing against a counter quote.
• Genuine GM only. Every alternators listing carries the original factory part number.
• Fitment checked by a person. Send the VIN and we verify the alternators before the box leaves.
• Central shipping origin. Dallas keeps alternators transit times short nationwide.

Getting the right part

Factory parts are built to the tolerances the vehicle was engineered around, not copied from a worn sample. A photo is rarely enough to order from. The VIN takes seconds and removes the guesswork. Freight is quoted at what it actually costs, not inflated to subsidize a headline discount.