1994 GMC Suburban 2500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1994 GMC Suburban 2500
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1994 GMC Suburban 2500 ProblemsValve Cover Gaskets May Leak Oil
A burning smell may develop due to an oil leak form one or both valve cover gaskets. Resealing the valve cover will generally correct this concern. However, the valve covers should be inspected and replaced if damaged.
On the 4L80-E Transmission (Diesel and 7.4L gas engine), Transmission fluid may leak through the electrical connector on the side of the transmission, damaging the wire harness and causing the transmission to shift erratically. Our technicians tell us there are updated shift solenoids, an internal transmission harness, and a connector pigtail available to correct this fault.
The quick-connect fittings for the heater hoses tend to leak engine coolant. This problem commonly occurs because the metal housing has become brittle, which can break and cause leaks.
1994 GMC Suburban 2500 QuestionsUnable to see dash gauges in daylight in my Suburban. (1 answer)
Does anyone know whether or not the dashboard is illuminated during daylight hours. In certain lights, such as driving into the bright sky it is very difficult to read the speedometer. The dash lights up at night OK but is still dimmer than I would like even with the dimmer switch on full. No fus...
Have changed the starter and fly wheel. Think I have starter hooked up wrong. It has three wires. Also, when hook up batteries to try to start, batteries spark and Glow plug stays on all time. Think I might have starter connected wrong
My husband it changing the brake pads and rotor on the front and needs to know how to get the rotors off.