1990 GMC Sierra 1500 TSBs
4 manufacturer communications for the 1990 GMC Sierra 1500 sit in NHTSA's public file. A TSB is factory repair guidance, not a recall — the repair is not automatically free. The 1990 Sierra 1500 problem report covers complaints, recalls, and investigations.
What the bulletins cover
Service bulletins
This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS.
SPRING SLAP NOISE FROM THE REAR OF THE GMT 400 SERIES TRUCK.
DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR NOISY COOLING FAN.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.