Campaign - Engine Timing Belt Failure: Overview
Model Year 1983Bulletin No. 83-C-9
File In Group 60
Number 51
Date Feb. 1984
SUBJECT: ENGINE TIMING BELT FAILURE
MODELS AFFECTED: 1982 AND 1983 SKYHAWKS EQUIPPED WITH 1.8L OHC ENGINES
General Motors has determined that some 1982-1983 Skyhawks equipped with 1.8L Electronic Fuel Injection/Overhead Cam 4-cylinder engine may have been produced with a cogged timing belt that was inadequately tensioned at time of assembly.
Low tension can allow the timing belt to contact the front cover with resultant noise and/or failure of the internal belt cogs. If several cogs in a row are lost, the engine may not start or run.
To correct this condition, dealers are to replace the timing belt and tension the new belt to a higher specification.
VEHICLES INVOLVED
Involved are all 1982 Skyhawks equipped with 1.8L EFI / Overhead Cam 4-cylinder engine (Code LH8).
Also, involved are all 1983 Skyhawks equipped with 1.8L EFI / Overhead Cam 4-cylinder engine (Code LH8) built within the following breakpoints:
BEGINNING
PLANT V.I.N UP TO AND INCLUDING
1983 Leeds DK400001 DK429665