NHTSA (USA)Critical
1993 GMC B7NHTSA Campaign #92V187000
The official notice
Defect
A MANUFACTURING CONDITION IN THE THROTTLE BODY INJECTOR (TBI) UNIT MIGHT OCCUR TO ALLOW THE THROTTLE CAM LEVER TO DISENGAGE FROM THE THROTTLE DRIVE SHAFT.
Safety Risk
IF THE THROTTLE CAM LEVER DISENGAGES FROM THE THROTTLEDRIVE SHAFT, THE ENGINE COULD GO TO WIDE OPEN THROTTLE WITHOUT PRIOR WARNING.THIS LOSS OF VEHICLE ACCELERATOR CONTROL COULD RESULT IN A VEHICLE CRASH.
Remedy
REPLACE THE THROTTLE DRIVE COVER ASSEMBLY.
Updated June 10, 2026