1988 Chevrolet Astro service bulletins & manufacturer communications

4 manufacturer communications are on file with NHTSA for the 1988 Chevrolet Astro. TSBs are repair guidance for dealers — they are not recalls, and repairs are not automatically free.

• General motors: on all 1988-2009 full size chevrolet/gmc pickups, utilities and vans, the brake pedal will move down or self apply during full lock turns or near full lock turns. C…
  PIT-3665-A · Technical service bulletin · Service Brakes, Hydraulic · issued Nov 1, 2010
• Window regulator motor does not fit. *tt
  01667 · Technical service bulletin · Visibility · issued Jan 1, 2004
• Diagnostic information for intermittent transmission downshift, slip, busy/cycling tcc or noisy cooling fan. *tt
  990730016A · Technical service bulletin · Power Train · issued Oct 1, 2002
• Transmission extention seal leaks. *tw
  467108 · Technical service bulletin · Power Train · issued Dec 1, 1994