The 2004 Chevy Colorado'S4-speed automatic transmission uses Dexron IIiATF fluid and the 5-speed manual is equipped with 75W-90 gear oil. You should schedule a flush and filter change for the Colorado's tranny every 30,000 miles. Problems associated with a failing tranny include hesitating, slipping between gears, surging while idle and lowered speed capacity, sometimes under 30 mph. The truck could also get stuck in park or not engage gears at all, if the transmission is going bad. Prevention against early tranny failure includes following manufacturer recommendations for lubricants and service intervals. Average cost for a fluid change for the Colorado's transmission is between $170-$200 in materials and labor.
The transmission fluid the 2004 chevy colorado uses is dexron iii.
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