Where is the transmission shift solenoid located on a 99 Chevy blazer?

The transmission shift solenoid on a 1999 Chevy Blazer isn't a single, easily accessible unit like a single solenoid in some transmissions. Instead, it's part of the transmission valve body. The valve body is located inside the transmission itself.

To access it, you'll need to:

1. Remove the transmission: This is a major job requiring significant mechanical skill and specialized tools. It's not something a novice should attempt.

2. Disassemble the transmission: Once removed, the transmission needs to be disassembled to access the valve body. This involves removing various internal components.

3. Locate the solenoids within the valve body: The valve body contains multiple solenoids, including the shift solenoids. You'll need a diagram or service manual to identify the specific solenoid(s) related to shifting.

In short, you won't find a single "transmission shift solenoid" readily accessible on the outside of the transmission. Repairing or replacing a shift solenoid usually requires professional transmission repair. It's a complex procedure requiring specialized knowledge and equipment.