Chevrolet Astro 1993 — technical service bulletin
Bulletin CAMP/93C56 · NHTSA communication 37823 · issued Nov 1, 1994
Technical service bulletin
communication type
Power Train
component
1993
model years
4
vehicle entries
Official summary
Manufacturer recall - 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 conditionfrom occurring, dealers will replace the cruise control vacuum release valve and check and adjust the btsi solenoid cable as needed. *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.