Possible causes of transmission problems mimicking the need to "bleed" could include:
* Low transmission fluid: Check the transmission fluid level using the dipstick (engine running and warmed up). Low fluid is a common cause of shifting problems. Add the correct type and amount of transmission fluid if needed. Do not overfill.
* Transmission fluid contamination: Contaminated fluid (burnt, dirty) can cause poor shifting and other issues. A complete transmission fluid and filter change is required.
* Internal transmission problems: Worn clutches, bands, valve body problems, or other internal failures are much more common causes of poor shifting than air in the lines. These require professional attention and often a rebuild or replacement of the transmission.
* Incorrect fluid: Using the wrong type of transmission fluid can severely damage the transmission.
What to do if you think you have a transmission problem:
1. Check the transmission fluid level and condition: This is the first step. If the level is low or the fluid is dark brown or burnt smelling, it needs attention.
2. Check for leaks: Inspect the transmission pan, lines, and seals for leaks.
3. Professional diagnosis: If the fluid level is correct, and the fluid is clean, but you still have transmission problems, you need to take your Blazer to a qualified mechanic or transmission specialist for diagnosis and repair. Trying to fix a failing transmission yourself without the right knowledge and tools can lead to more serious and expensive problems.
In short, there's no bleeding process for a 99 Chevy Blazer's automatic transmission. Focus on checking the fluid level and condition, and seek professional help if there are any problems beyond a simple low fluid level.
