A/C - Moan/Vibration with Compressor Engaged
89pontiac09Bulletin Number: 88-6-95
Reference Number: 936507
Publish Date: 4/89
Subject: MOAN OR VIBRATION WITH A/C RUNNING WITHOUT SERPENTINE DRIVE (INSTALL SUPPORT BRACE)
Models
1985-88 FIREBIRD, 1985-86 BONNEVILLE AND
Affected: PARISIENNE, 1985-87 GRAND PRIX AND 1985
SAFARI WAGON MODELS EQUIPPED WITH LB4, LG4, L69, LB9, L98 AND LM1 ENGINES (VIN CODES H, G, F, Z AND 6)
This bulletin supersedes bulletin 87-1-3A dated 2187 which should be discarded due to added model applications.
Some 1985-88 Firebird, 1985-86 Bonneville and Parisienne, 1985-87 Grand Prix and 1985 Safari Wagon models equipped with V-8 (VIN F, G, H, or 6) or V-6 (VIN Z) engines (without serpentine accessory drive) may exhibit a moan or engine vibration when the air conditioning compressor is engaged. This condition may be corrected by the installation of a support brace to the A/C compressor mounting bracket. Refer to the illustration for installation procedure.
The following components will be required:
PART NAME PART NUMBER NUMBER REQUIRED
Support Brace 10055819 1
Stud (3/8-16) 14057002 1
Bolt (3/8-16) 9440169 1
Nut (3/8-16) 14057004 1
IMPORTANT: THE STUD SHOULD BE COATED WITH THREAD SEALANT, P/N 1052080, PRIOR TO INSTALLATION.
Parts are currently available from GMSPO.
WARRANTY INFORMATION
Labor Operation Number : T1188
Labor Time : .4 Hours