Where is the transmission fluid at on an 89 GMC sierra 1500 truck?

The transmission fluid dipstick on an 89 GMC Sierra 1500 is typically located on the passenger side of the engine compartment, near the firewall. However, its *exact* location can vary slightly depending on the transmission type (automatic or manual) and specific engine configuration.

To be certain:

1. Consult your owner's manual: This is the best source for the precise location.

2. Look for a dipstick with markings: Transmission dipsticks usually have a handle and markings indicating "add" and "full" levels. They're often near other fluid dipsticks (like the engine oil).

3. Check near the transmission itself: The transmission is a large metal casing usually located towards the rear of the engine compartment, and the dipstick will generally be near it.

If you can't find it after checking these locations, searching online for "1989 GMC Sierra 1500 transmission dipstick location" along with images might help. Remember to be cautious when working under the hood of a vehicle.