Chevrolet Astro 1993 — technical service bulletin
Bulletin RCL/93C56A · NHTSA communication 38077 · issued Jan 1, 1995
Technical service bulletin
communication type
Power Train
component
1993
model years
4
vehicle entries
Official summary
General motors has determined that certain 1993 m/l and g vans may experience a condition, at temperatures below 32 degrees fahrenheit, where the transmission will not shift out of park with the brake pedal depressed. To prevent this condition form occurring, dealers will replace the cruise control vacuum release valve and check and adjust the btsi solenoid cable. *tw
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.