what year is your yukon ?
---------- Post added at 10:49 PM ---------- Previous post was at 10:48 PM ----------
1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Support the rear axle independently in order to relieve the tension on the leaf springs.
3. Disconnect the Real Time Damping (RTD) sensors (25 series utilities if equipped). Refer to Rear Position Sensor Replacement - Electronic Suspension - Left (15 Series) or Rear Position Sensor Replacement - Electronic Suspension - Left (25 Series) or Rear Position Sensor Replacement - Electronic Suspension - flight (25 Series) in Real Time Damping (RTD) .
4. Remove the trailer hitch if equipped. Refer to Trailer Hitch Replacement in Body and Frame.
5. Remove the fuel tank for left side applications. Refer to in Powertrain Management.
6. Remove the U-bolt nuts.
7. Remove the U-bolts.
8. Remove the spring spacer.
9. Remove the anchor plate.
---------- Post added at 10:50 PM ---------- Previous post was at 10:49 PM ----------
it looks like your have to drop the tank man!