A/T - Reverse Gear Shudder or Vibration
Bulletin 86-7-3ADate June '86
Ref. No. 86-119A-7
SUBJECT: REVERSE GEAR SHUDDER OR VIBRATION
MODELS AFFECTED: 1986 RIVIERA
NOTE: This bulletin is being reissued to include the warranty information. Please discard the original bulletin and replace it with this one.
ENGINE AND TRANSMISSION MOUNT LOCATION:
Some 1986 Rivieras may experience a shudder or vibration in reverse. This may be caused by contact between the engine mount (Location 1, Illustration) and exhaust beat shield or by a grounded condition of the safety pin in the RH transmission mount (Location 2, Illustration).
If there appears to be contact between the engine mount and exhaust heat shield, the engine mount should be replaced with a new engine mount, part number 17986962, which is available from GMWDD.
If there appears to be a grounded condition of the safety pin in the RH transmission mount, this transmission mount should be replaced with a new mount, part number 1640099, which is available from GMWDD.
Warranty Information
Front Engine Mount Replacement:
Operation Number: J1500
Labor Time: .4
Trouble Code: 92
RH Transmission Mount Replacement:
Operation Number: K6723
Labor Time: .5
Trouble Code: 92