GM Service Manual Online
For 1990-2009 cars only

Radiator Filler Cap Pressure Testing Procedure

Tools Required

J 24460-01 Cooling System and Cap Pressure Tester

  1. Clean the cap.

  2. Object Number: 1375  Size: SH
  3. Use the J 24460-01 in order to test the cap.
  4. Slowly pump the J 24460-01 in order to obtain the minimum holding pressure. If the cap fails to hold 103 kPa (15 psi) of pressure, replace the cap.