1993 GMC Suburban 2500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1993 GMC Suburban 2500

1993 GMC Suburban 2500 Problems

Transmission 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.

Quick-Connect Fittings For Heater Hoses May Leak Engine Coolant

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.

Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail

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.

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1993 GMC Suburban 2500 Questions

My truck is running rough. shaking violently At idle.touch the gas and dies out. (1 answer)

My Suburban will not go into four wheel drive. (3 answers)

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 ...

BRAKE WARNING LIGHT (1 answer)

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.

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1993 GMC Suburban 2500 Recalls

Recall 01I006000
THIS IS NOT A SAFETY RECALL IN ACCORDANCE WITH THE SAFETY ACT. HOWEVER, IT IS DEEMED A SAFETY IMPROVEMENT CAMPAIGN BY THE AGENCY. VEHICLE DESCRIPTION: 1992-1994 CHEVROLET AND GMC SUBURBANS EQUIPPED WITH VACUUM POWER-BRAKE ASSIST AND EBC4 ANTI-LOCK BRAKE (ABS) MODULES. THESE VEHICLES EXHIBIT ...

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1993 GMC Suburban 2500 Reviews

We have had the car for 18 years, it was purchased as a lo mile used vehicle. Running a 454 CID big block it has performed very well and is good on gas. Originaly we had a 28 ft trailer to hall cross country, didn't even notice a pull or load on this chassis. My 350 cid truck boged down and was difficult to stop.

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