Rainier 2WD L6-4.2L VIN S (2005)
Verify the fluid level.
18. Remove the pump reservoir cap.
19. Attach the J43485 to the J35555 or equivalent.
20. Place the J43485 on or in the pump reservoir filler neck.
21. Apply a vacuum of 68 kPa (20 in-Hg) maximum.
22. Wait 5 minutes.
23. Remove the J43485 and the J35555.
24. Verify the fluid level.
25. Reinstall the pump reservoir cap.
Excessive Vacuum Drop Diagnosis
1. If the vacuum continues to drop, remove the pressure and return hose from the pump.
2. Install the plugs (1,2) supplied with the J43485 into the pressure and return port.
