2024 Chevrolet Silverado 1500: Transmission Fluid & Service

Quick answer

• Transmission model: GM 10L80 10-speed automatic transmission
• OEM fluid specification: ACDelco ATF Type ULV (DEXRON ULV)
• Drain and fill capacity: Approximately 6-7 quarts (verify with dipstick)
• Full overhaul capacity: Approximately 12.3 quarts
• Filter OEM part number: Verify with dealer or service manual (e.g., GM 24045739, ACDelco TF935)
• Recommended service interval: 45,000 miles (severe service)

Fluid type explained

The 2024 Chevrolet Silverado 1500 equipped with the 10L80 10-speed automatic transmission requires a very specific fluid: DEXRON ULV (Ultra-Low Viscosity). This fluid is engineered with a unique viscosity and additive package to meet the demanding requirements of this particular transmission. Using any other type of fluid, even other DEXRON formulations like DEXRON VI, can lead to shift quality issues, chatter, and even premature component failure. Always use a fluid that explicitly meets the DEXRON ULV specification. ACDelco Type ULV is the OEM fluid.

Service procedure

There are two primary methods for servicing the transmission fluid:

• Drain and Fill: This is the most common and straightforward method. It involves removing the drain plug, allowing the fluid to drain from the pan, and refilling the transmission with fresh fluid. This process typically replaces about 60-70% of the total fluid in the system, leaving old fluid in the torque converter and cooler lines. This is the GM-recommended procedure for routine maintenance.
• Fluid Exchange: A fluid exchange or "flush" uses specialized equipment to connect to the transmission cooler lines and exchange nearly all of the old fluid with new fluid while the engine is running. While this method replaces a higher percentage of the fluid, it must be performed carefully with the correct equipment and procedure to avoid damaging the transmission.

For the 10L80, a standard drain and fill is sufficient for routine maintenance and is the preferred method for most owners and shops.

Service interval

GM's official recommendation for the 2024 Silverado 1500 is to change the automatic transmission fluid and filter every 45,000 miles, but only under "severe" operating conditions. However, what constitutes "severe" service is very common for truck owners:

• Towing a trailer or hauling heavy loads
• Extensive idling or driving in heavy city traffic
• Driving in hilly or mountainous terrain
• Frequent short trips

Given that many Silverado owners use their trucks for these exact purposes, adhering to the 45,000-mile interval is a wise investment in the longevity of your transmission. For "normal" service (primarily highway driving with light loads), GM does not specify an interval, but many technicians still recommend a fluid change between 60,000 and 90,000 miles as preventative maintenance.

Common transmission problems

The GM 10L80 is a robust, technologically advanced transmission, but some common issues have been reported by owners in this and previous model years. These can include:

• Harsh or delayed shifting: Some owners report harsh shifts, particularly on the 1-2 or 2-3 upshift, or a "clunk" when shifting into gear. Software updates (re-flashing the TCM) from the dealer can often resolve these complaints.
• Torque converter issues: Problems with the torque converter can lead to a shudder or vibration, sometimes feeling like driving over rumble strips. This can be caused by fluid breakdown or internal component issues.
• Solenoid failure: The solenoids within the valve body control fluid flow to engage different gears. A failed solenoid can cause shifting problems or a complete loss of a gear.

Regular fluid service is the single best way to prevent these issues and ensure a long service life for your transmission.

Find a trusted shop on Repairius.