Owner's Manual
Page 304
...the 4.3L engines(VIN Codes W and Z) for burns, cracks or other commercial service. ENGINE TIMING CHECK AND DISTRIBUTOR CHECK*$ Adjust timing to the completion of the distributor cap and rotor cracks, carbon tracking and for Manual Transmission- Frequent trailer pulling. If the vehicle is mainly driven under... miles (50 000 k ) See "Automatic m. Transmission Fluid" in the Index. 9. if 8. Check the wire boot the fit at distributor and at the specified interval or sooner clogged. General Motors, however, urges that the failure to perform this maintenance item will not nullify the...
...the 4.3L engines(VIN Codes W and Z) for burns, cracks or other commercial service. ENGINE TIMING CHECK AND DISTRIBUTOR CHECK*$ Adjust timing to the completion of the distributor cap and rotor cracks, carbon tracking and for Manual Transmission- Frequent trailer pulling. If the vehicle is mainly driven under... miles (50 000 k ) See "Automatic m. Transmission Fluid" in the Index. 9. if 8. Check the wire boot the fit at distributor and at the specified interval or sooner clogged. General Motors, however, urges that the failure to perform this maintenance item will not nullify the...