Chevrolet Astro 1996 — technical service bulletin
Bulletin 9774L60E08A · NHTSA communication 52555 · issued Apr 1, 1997
Technical service bulletin
communication type
Power Train
component
1996
model years
11
vehicle entries
Official summary
Automatic transmission 1-2 and/or 2-3 upshift slip/flare, no 3rd or 4th gear, dtc p1870, launch shudder (revise vcm wiring). *tw
Vehicles covered
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.