1993 Gmc K2500 problems

General information about Gmc-K2500
Overview of popular issues
Analysis of common problems
Сomplaints list
Recalls list

The fourth generation of the C/K series is a range of trucks that was manufactured by General Motors. Marketed by the Chevrolet and GMC brands from the 1988 to the 2002 model years, this is the final generation of the C/K model line. In a branding change, GMC adopted the GMC Sierra nameplate for all its full-size pickup trucks, leaving the C/K nomenclature exclusive to Chevrolet.

Internally codenamed the GMT400 platform, GM did not give the model line a word moniker (e.g., "Rounded-Line series" for its predecessor). After its production, the model line would informally become known by the public as the "OBS" (Old Body Style), in reference to its GMT800 successor. In starting a different tradition, the model line overlapped production with both its predecessor and successor; the model line again shared body commonality with GM medium-duty commercial trucks.

Over nearly a 14-year production run, the fourth-generation C/K was assembled by GM in multiple facilities in the United States, Canada, and Mexico. After the 2000 model year, the fourth-generation C/K was discontinued and was replaced by the GMT800 platform (introduced for 1999); the C3500HD heavy-duty chassis cab model remained in production through 2002. In line with the GMC Sierra, Chevrolet subsequently adopted a singular Chevrolet Silverado nameplate for its full-size truck line (which remains in use).

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Common 1993 Gmc K2500 problems

The GMC K2500, produced in 1993, has been known to experience several common problems, primarily related to its transmission and engine.

Transmission Issues:

Transmission Slipping: Numerous owners have reported issues with the 4L80E transmission, which tends to slip, especially in third gear and reverse. This problem can be caused by faulty solenoids, wiring issues, or even a damaged torque converter clutch (TCC) valve in the valve body.
No Downshift: Some owners have experienced problems with the transmission not downshifting properly, causing the engine to stall intermittently. This issue can be caused by faulty solenoids, wiring problems, or issues with the transmission control module (TCM).
Delayed Reverse: Some owners have reported that the transmission takes a long time to engage reverse gear, causing a delay before the vehicle starts moving backward. This issue can be caused by a worn-out reverse gearband or a problem with the TCM.
Transmission Overheating: The transmission in the GMC K2500 can overheat, especially when towing or hauling heavy loads. This issue can be caused by a lack of transmission fluid or a faulty transmission cooler.

Engine Issues:

Oil Leaks: The GMC K2500 engine can develop oil leaks, especially from the oil pan gasket or the oil filter adapter. These leaks can be caused by wear and tear, corrosion, or loose connections.
Engine Stalling: Some owners have reported that the engine stalls intermittently, especially when accelerating or decelerating. This issue can be caused by a faulty ignition module, a damaged distributor cap, or worn-out spark plugs and wires.
Engine Running Rough: Some owners have reported that the engine runs roughly, especially at low speeds. This issue can be caused by a faulty internal distributor, a damaged fuel pump, or a problem with the engine's timing.

To address these issues, owners can consider several solutions, such as replacing faulty parts, rebuilding or replacing the transmission, or upgrading to a more robust aftermarket transmission. Regular maintenance, such as changing the transmission fluid and filter, can also help prevent these issues from occurring.

1993 Gmc K2500 car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Gmc K2500 problems, we found that the most common problems with these 2023 model year vehicles are:

Service brakes problems
Hydraulic problems
Seats problems

The graph below shows statistics for all 1993 Gmc K2500 vehicle components and the number of complaints received.

1993 Gmc K2500 complaints

The NHTSA has received 2 complaints about various vehicle components related to the 1993 Gmc K2500.

2001-01-03

SERVICE BRAKES, HYDRAULIC PROBLEM

Date Of Incident: 2000-07-19
Number Of Injuries: 2
Crash: 1
VIN: 2GTFK29C0P1
Components: SERVICE BRAKES, HYDRAULIC
Summary: I TRIED TO STOP IN WHICH I HAD ENOUGH TIME TO STOP THERE AND I REAR ENDED A VEHICLE MY BRAKES WENT THE FLOOR. THERE WERE NO BLACK MARKS SHOWING ANY SKID. I HAVE LOOKED ON THE INTERNET ABOUT THIS PROBLEM WITH THE ABS BRAKES AND FOUND THAT THERE IS IN FACT PROBLEMS. BUT THE DEALERSHIP SAID NO TROUBLE CODE WAS SENT SO THEY CAN'T HELP US. I ALSO HAD A SECOND EPISODE OF THE BRAKES GOING TO THE FLOOR AND ENDED UP IN THE MIDDLE OF AN INTERSECTION. THE INFORMATION ON THE INTERNET INFORMATION STATED THE EXACT SAME PROBLEMS BUT WITH NO FIX FOR THE PROBLEM. WE FEEL THAT SOMEONE REALLY NEEDS TO RESEARCH THIS AND FIND A FIX. AS THIS IS THE 3RD VEHICLE WE HAVE OWNED WITH THIS SAME PROBLEM. YES ON TWO OF THE VEHICLES THERE WAS RECALLS. BUT THE CURRENT 1993 TRUCK NO RECALL HAS BE MADE. CAN YOU HELP US? THANK YOU FOR YOUR TIME.*AK

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1996-09-17

SEATS PROBLEM

Date Of Incident: 1996-08-27
VIN: 1GTGK29K7PE
Components: SEATS
Summary: CONSUMER WAS DRIVING AND THE DRIVER'S SEAT BENCH BOLT ON THE UPPER HINGE BROKE AND SEAT RECLINED BACKWARDS. PLEASE DESCRIBE. *AK

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1993 Gmc K2500 recalls

The National Highway Traffic Safety Administration (NHTSA) has issued 3 recalls for different components of the 1993 Gmc K2500.

2007-10-24

Manufacturer: HONEYWELL INTERNATIONAL, INC.
Components: EQUIPMENT
Summary: CERTAIN HONEYWELL FRAM RACING BRAND HP4 AND HP8 OIL FILTERS THAT WERE MANUFACTURED FROM MAY 25, 2006, THROUGH SEPTEMBER 14, 2007, AND SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR VEHICLES LIST ABOVE. THE AFFECTED FILTERS ARE MARKED WITH A DATE CODE A61451 THROUGH A72571 SEQUENTIALLY. THE DATE CODE AND PART NUMBER APPEAR ON THE FILTER HOUSING. FRAM RACING HP4 AND HP8 OIL FILTERS NOT BEARING A DATE CODE IN THIS RANGE ARE NOT AFFECTED BY THIS RECALL. THE GASKET OF THE OIL FILTER BECOMES MORE PLIABLE UNDER HIGH TEMPERATURES AND PRESSURES.
Consequence: THIS CONDITION MAY CAUSE INADEQUATE SEALING AND LOSS OF ENGINE OIL, POSSIBLY RESULTING IN A FIRE.
Remedy: HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING NOVEMBER 2007. OWNERS CAN CONTACT FRAM CUSTOMER SERVICE TOLL-FREE AT 1-800-890-2075.

2006-05-19

Manufacturer: HONEYWELL INTERNATIONAL, INC.
Components: FUEL SYSTEM, GASOLINE
Summary: CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18, 2005, THROUGH MARCH 21, 2006, SOLD FOR USE ON THE VEHICLES LISTED ABOVE AND ON CERTAIN SCHOOL BUSES. (TO SEE THE SCHOOL BUS ENGINE SIZES, CLICK ON "DOCUMENT SEARCH" AND THEN "BUS APPLICATIONS"). THE CONNECTOR ON THE FUEL FILTER WAS NOT MANUFACTURED TO HONEYWELL'S SPECIFICATION. AS A RESULT, THE O-RING MAY NOT SEAT CORRECTLY ON THE FUEL LINE.
Consequence: THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. IN THE PRESENCE OF AN IGNITION SOURCE, A FIRE COULD OCCUR.
Remedy: HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 18, 2006. OWNERS MAY CONTACT FRAM CUSTOMER SERVICE AT 1-800-890-2075 (OPTION 1).

1993-02-01

Manufacturer: GENERAL MOTORS CORP.
Components: POWER TRAIN:AUTOMATIC TRANSMISSION
Summary: UNANTICIPATED HEAT IN THE TRANSMISSION CAN FORCE THE TRANSMISSION FLUID OUT OF THE VENT TUBE.
Consequence: THE VENTED TRANSMISSION FLUID CAN CATCH FIRE IF EXPOSEDTO A SOURCE OF IGNITION.
Remedy: INSTALL A LONGER TRANSMISSION VENT HOSE ROUTED TO THE LEFT SIDE OF THE ENGINE COMPARTMENT OF THE VEHICLE.