Line Pressure Adapter and Gauge Installation

Tools Required

• J 21867-94 Line Pressure Adapter Kit
• J 21867-100 Pressure Gauge Adapter

1. Remove the air cleaner assembly.
Fig 1: Identifying Line Pressure Plug
Courtesy of GENERAL MOTORS COMPANY
2. Remove the line pressure plug.
Fig 2: Connecting Adapter To Transmission Case
Courtesy of GENERAL MOTORS COMPANY
3. Install J 21867-100 using a ratchet box wrench. Tighten the adapter so that the insert hole for the dowel rod is in a 1 o'clock position.
Fig 3: Line Pressure Adapter Kit & Dowel Rod
Courtesy of GENERAL MOTORS COMPANY
4. Install the dowel rod from J 21867-94 .
Fig 4: View of Line Pressure Gage & Hose on Dowel Rod Fitting
Courtesy of GENERAL MOTORS COMPANY
5. Attach a line pressure gauge and hose to the dowel rod fitting.
6. Secure the hose in a safe position to avoid damage to the tools and vehicle during the line pressure testing.
7. When you have completed the testing procedure, remove the line pressure gauge and hose from the dowel rod fitting.
8. Remove the dowel rod.
9. Remove J 21867-100 using a ratchet box wrench.
10. Install the line pressure plug.
11. Install the air cleaner assembly.