#2017 GMC SIERRA TRANSMISSION PROBLEMS INSTALL#

If antifreeze or water has entered the transmission: Both conditions may cause damage to the transmission. Inspect the cooling system.Ĭaution: The antifreeze or water will deteriorate the seals, gaskets, and the glue that bonds the clutch material to the pressure plate. If the automatic transmission fluid is cloudy, suspect water contamination.

#2017 GMC SIERRA TRANSMISSION PROBLEMS INSTALL#

Install and tighten the new transmission oil drain plug to 6lb-ft (8NM).Ĭheck that the automatic transmission fluid is free of foreign matter. If no fluid comes out after you remove the plug and the temperature is within the specified range, add fluid until it runs out as a steady stream. Lubricate the seal with AW-1 fluid and install the O-ring before installing the plug. The replacement plugs come with an O-ring. Once removed, you must replace these plugs with new ones. You only need to remove one whichever is easiest to reach. They have an interference fit and don’t have O-rings. The fluid filler plugs installed at locations 1 and 2 (figure 2) from the vehicle assembly plant are one-time use. This causes clutches to slip, resulting in problems such as a burned clutches. Insufficient automatic transmission fluid level will cause the oil pump to draw in air, reducing line pressure. Some residual automatic transmission fluid will dribble from the fluid level-setting hole when you first remove the plug that’s normal. The fluid will make contact with the geartrain, which will aerate it, leading to shift troubles, converter shudder, and fluid leaking out the vent (figure 1). If you check the fluid level when it’s too cold, when the transmission comes up to operating temperature, it’ll be overfilled. It has a high expansion rate if you don’t check it at the right temperature, it’ll create several problems. The AW-1 fluid is a full-synthetic fluid. It’s very important that the fluid is up to temperature. If you need to add fluid, use only the recommended automatic transmission fluid.

Remove the fluid level plug on the bottom of the transmission, and see if the fluid dribbles out or not (figure 1).The vehicle must be level, with the engine running and the shift lever in park. Repeat step 3 and then shift back into park.Move the shift lever to all positions from park to drive, waiting at least two seconds at each position.Wait until the transmission fluid temperature reaches 35º–45✬ (95º–113✯).Take a look at what you need to do to check the fluid on GM’s AF50 8-speed. Those days are pretty much gone for good. Was it burnt, varnished, or nice and red? And if you needed to add fluid, you’d just grab a quart of Type F or Dexron off the shelf. You could look at the fluid on the stick and tell a lot by its condition. Remember the good old day’s when you just opened the hood pulled out the dipstick, wiped it off, stuck it back in, and pulled it out? Just like that, you knew if the fluid was low or not.

2017 gmc sierra transmission problems