Where is the air conditioning drain plug on 1994 Chevy Suburban?

There isn't a single, easily accessible drain plug for the air conditioning system on a 1994 Chevy Suburban (or most vehicles, for that matter). The condensate drain line from the evaporator core is typically a small tube or hose that drains into a trough or directly outside the vehicle, somewhere under the dashboard or near the firewall. There's no plug to remove.

If you're experiencing water accumulation from the A/C system, the problem is usually a clogged drain line. You'll need to locate this line and clear the clog. This often involves using compressed air or a shop vacuum to clear the obstruction. The exact location of the drain line is difficult to pinpoint without a detailed shop manual for your specific Suburban model. It's usually hidden and requires some disassembly to access.

To find it, you'll likely need:

* A shop manual: This is the best resource. It will show you diagrams and precise locations.

* A flashlight: To see into tight spaces under the dashboard.

* Patience: Finding this drain can be tricky.

Caution: Be careful when working under the dashboard. Avoid damaging any wiring or other components. If you're not comfortable working on your vehicle, it's best to take it to a qualified mechanic.