Two problems related to engine cooling system have been reported for the 1999 Chevrolet Silverado. The most recently reported issues are listed below.
After stopping in driveway, heater hose disconnected from firewall losing lg qty of coolant.
Would smell anti-freeze inside of vehicle. Coming through the vents. This caused problem with respiration. Took vehicle to dealer & mechanic took dashboard apart to repair leakage on passenger's side. Repaired the leaking problem. Now the leakage has returned.