1979 GMC K20
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
Have the VIN?
These records cover every 1979 GMC K20. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
2 recalls name the 1979 GMC K20. Newest first.
Fatigue cracks may develop in the brake vacuum booster housing. This may cause a vacuum leak and reduce the effectiveness of the brakes. After prolonged use, the cracks may develop to the extent that the booster may separate from the vehicle.
Risk and remedy
Remedy
Vehicles will be inspected for fatigue cracks in the brake vacuum booster. Those without cracks will have a support brace installed. Those with evidence of cracking will have a new brake vacuum booster and support brace installed. This service will be provided at no charge.
On the involved vehicles the brake stoplight and cruise control switch which IS operated by the brake pedal may have been assembled with an incorrect lubricant on the actuating plunger. This can cause the rear brake stoplights to become inoperative and the cruise control, if activated, to stay electrically engaged.
Risk and remedy
Remedy
Dealer will inspect and, if necessary, replace the brake stoplight and cruise control switch at no cost to owner.
Every GMC K20 model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.