Tools Required

J 21882  Oil Suction Pipe Installer. See Special Tools .

Fig 1: Identifying Intake Manifold Coolant Pipe
Courtesy of GENERAL MOTORS CORP.
1. Remove the intake manifold coolant pipe bolt, if required.
2. Remove the intake manifold coolant pipe, if required.
Fig 2: View Of Intake Manifold
Courtesy of GENERAL MOTORS CORP.
3. Clean the intake manifold gasket mating surfaces using P/N 12378392 or equivalent.
4. Clean the fuel injector bores.
5. Inspect the intake manifold for damage.
6. Repair or replace the intake manifold as necessary.
Fig 3: View Of J 21882
Courtesy of GENERAL MOTORS CORP.
7. Apply sealant P/N 21005994 or equivalent to the end of the intake manifold coolant pipe, if required.
8. Install the intake manifold coolant pipe using J 21882  . See Special Tools .
NOTE: Refer to Fastener Notice in Cautions and Notices.
9. Install the intake manifold coolant pipe bolt.

   Tighten:  Tighten the intake manifold coolant pipe bolt to 10 N.m (89 lb in).