2022 GMC Sierra 1500 Transmission Fluid & Service

Quick answer

• Transmission make/model: GM 10L80 10-speed automatic transmission
• OEM fluid spec: ACDelco ULV (Ultra-Low Viscosity) automatic transmission fluid, which meets the DEXRON ULV specification.
• Drain & fill capacity: Approximately 6-7 quarts.
• Full overhaul capacity: Approximately 13 quarts.
• Filter OEM part number: Verify with dealer or service manual.
• Recommended service interval: 45,000 miles for severe service, no specified interval for normal service.

Fluid type explained

The 2022 GMC Sierra 1500 is equipped with the GM 10L80 10-speed automatic transmission, a sophisticated piece of engineering designed for efficiency and performance. This transmission requires a very specific fluid to operate correctly: a full synthetic, ultra-low viscosity (ULV) fluid that meets the DEXRON ULV specification. The OEM fluid is ACDelco ULV Automatic Transmission Fluid.

Using a fluid that is not DEXRON ULV-approved can lead to shift quality issues, increased wear on internal components, and potentially catastrophic transmission failure. These ULV fluids are not backward-compatible with older DEXRON specifications like DEXRON VI. Always use the fluid specified for your vehicle.

Service procedure

There are two common ways to service the transmission fluid in your Sierra:

• Drain and Fill: This is the most common method. It involves draining the fluid from the transmission pan, which typically removes about half of the total fluid in the transmission. The pan is then refilled with fresh fluid. This is a relatively simple and cost-effective way to refresh the fluid and is adequate for most situations.

• Full Fluid Exchange: This procedure uses a specialized machine to pump out all of the old fluid from the transmission, torque converter, and cooler lines while simultaneously refilling the system with new fluid. This method replaces nearly 100% of the fluid but is more expensive and time-consuming. A full fluid exchange is often recommended for vehicles that have been used for heavy towing or have gone beyond the recommended service interval.

Service interval

GM specifies two different service intervals for the 10L80 transmission in the 2022 Sierra:

• Normal Service: For vehicles operated under normal conditions, GM does not specify a transmission fluid change interval. However, many technicians recommend a fluid and filter change between 60,000 and 100,000 miles as a preventative measure.

• Severe Service: The severe service interval is 45,000 miles. Severe service is defined as operating the vehicle in one or more of the following conditions:

  • Mainly in heavy city traffic in hot weather
  • In hilly or mountainous terrain
  • When frequently towing a trailer
  • Uses such as found in taxi, police, or delivery service

Given that many trucks are used for towing and hauling, it's wise to follow the severe service interval to ensure the longevity of your transmission.

Common transmission problems

The 10L80 is generally a reliable transmission, but some owners have reported issues, including:

• Harsh or delayed shifting: Some owners have experienced harsh or jerky shifts, particularly between first and second gear, or a hesitation when shifting. This can sometimes be addressed with a software update from the dealer or may indicate a more significant internal issue.
• Torque converter problems: Issues with the torque converter can cause a shudder or vibration, especially under light acceleration.

If you notice any unusual shifting behavior, it's important to have your vehicle inspected by a qualified technician as soon as possible.

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