High Output Alternator for Chevrolet Colorado (2015-2020) 2.5L

High-Amperage 250A Alternator for 2015-2020 Chevrolet Colorado (GMT 31XX)

What it Does: The 250-Amp High Output Alternator directly replaces the factory charging unit on the 2015-2020 Chevrolet Colorado 2.5L to eliminate voltage sag and deliver stable, high-current electrical output under heavy auxiliary loads.

The Stock Chevrolet Colorado Electrical Bottleneck

The factory OEM charging unit on the GMT 31XX platform equipped with the 2.5L LCV engine is engineered strictly for base electrical demands. When accessories such as high-draw winches, aftermarket audio systems, auxiliary lighting, or dual-battery banks are installed, the stock alternator quickly suffers from thermal saturation. Under prolonged electrical load or low idle RPM conditions, the factory stator windings drop voltage below optimal charging thresholds (13.8V–14.4V). This causes battery drain, accessory shut-down, and premature diode pack failure due to excessive internal heat buildup.

The Engineering Solution

Manufactured in the USA, this direct-replacement 250-amp alternator features heavy-duty hairpin stators and dense copper windings engineered to minimize electrical resistance and maximize amp delivery at both idle and cruising RPMs. Upgraded heavy-duty avalanche diodes and precision-balanced rotors enhance internal heat dissipation, effectively preventing thermal derating in hot engine bays. It installs seamlessly into the OEM mounting brackets and matches factory belt geometry while replacing worn OEM numbers such as 104210-1960, 13592811, and 22892569 without triggering charge system diagnostic fault codes.

What's Included

• 1 x 250-Amp High Output Alternator

Technical Specifications

Compatibility

• 2015-2020 Chevrolet Colorado Base (2.5L L4 Gas)
• 2015-2020 Chevrolet Colorado WT (2.5L L4 Gas)
• 2015-2020 Chevrolet Colorado LT (2.5L L4 Gas)

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT 31XX Colorado?

Yes, this is a direct fit for the 2015-2020 Chevrolet Colorado equipped with the 2.5L LCV inline-4 engine.

Do I need to upgrade the primary charging wire?

A Big 3 wiring upgrade (upgrading the alternator-to-battery B+ cable and engine ground to 1/0 AWG) is strongly recommended to handle the increased 250-amp capacity safely.

The Chevrolet Durability Caliber

Engineered for work utility and backcountry trail rigs, this heavy-duty charging platform guarantees dependable current delivery under extreme winching, heavy towing, and extreme environmental demands.