NHTSA recall 88V174000
Electrical system › Wiring
White GMC WB and 9 more
Reported Nov 2, 1988234 vehicles affectedVOLVO GM HEAVY TRUCK CORPBuilt Mar 1, 1988 – Sep 1, 1988
The defect
Grounding of the ac power source may be defective (or there may be no electrical grounding at the ac power source).
The risk
Anyone coming into physical contact with the truck whileit IS connected to a non ground ac power source may receive an electrical shocksufficient to cause personal injury or death.
The remedy
Rewire engine block heater to assure proper grounding.