1993 GMC Suburban 2500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1993 GMC Suburban 2500
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Never overpay. Check prices with our estimator
1993 GMC Suburban 2500 ProblemsTransmission fluid leaking, erratic shifting
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.
One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.
1993 GMC Suburban 2500 QuestionsMy truck is running rough. shaking violently At idle.touch the gas and dies out. (1 answer)
I used the four wheel drive to get out of a parking lot where the snow was deep enough to get me stuck in two wheel drive. The transfer case shifted manually as it usually does, the indicator on the shift lever indicated four wheel drive and the four wheel drive worked. I shifted into high range ...
why does the brake warning light stay on, even though the brakes are working, albeit a little less effectively than before. I have recently replaced the front break pads and rear shoes. The break fluid reservoir is losing fluid slowly, too.