Emissions - Vacuum Hose Split
88pontiac20Bulletin Number: 89-6-8
Reference Number: 836006
Publish Date: 10/88
Subject: VACUUM HOSE SPLIT (REPLACE HOSE)
Models
Affected: 1989 FIREBIRD EQUIPPED WITH AIR CONDITIONING AND/OR CRUISE CONTROL
Some of the above vehicles, built prior to VIN breakpoint L207264, may exhibit an audible engine vacuum leak, rough engine idle or inoperative air conditioning and/or cruise control. This condition may be caused by a split in the short vacuum hose on the left side of check valve, located at the top rear of the engine.
This condition may be addressed by replacing the split hose with a 1-1/4 inch length of 5/32 I.D. double walled vacuum hose obtained locally or GM service bulk hose, P/N 9438381.
Parts are currently available from GMSPO.
Use applicable Labor Operation and Time.