1991 Gmc C15 problems

General information about Gmc-C15
Overview of popular issues
Analysis of common problems
Сomplaints list

The Chevrolet C/K is a series of trucks that was manufactured by General Motors from the 1960 to 2002 model years. Marketed by both the Chevrolet and GMC divisions, the C/K series encompassed a wide range of vehicles. While most commonly associated with pickup trucks, the model line also included chassis-cab trucks and medium-duty trucks and served as the basis for GM full-size SUVs. Through its entire production, the model line competed directly against the Ford F-Series and the Dodge D series (later the Dodge Ram pickup).

Used for both the model branding and the internal model code, "C" denoted two-wheel drive, while "K" denoted four-wheel drive. Four generations of the C/K series were produced, including the GM monikered second-generation "Action Line" and third-generation "Rounded Line" vehicles (colloquially aka Square-Body trucks). For the fourth-generation (colloquially also known as OBS trucks), Chevrolet kept using the C/K designation while GMC revised its branding, changing to a singular GMC Sierra nameplate (C/K remained as an internal model code).

For South America, the model line was manufactured by General Motors de Argentina from 1960 to 1978, Sevel Argentina from 1986 to 1991, and General Motors Brazil, who produced versions of the model line for Brazil, Argentina, and Chile from 1964 to 2001.

As GM entered the 1990s, the company revised its truck ranges, replacing the medium-duty C/K trucks with the Chevrolet Kodiak/GMC TopKick for 1990. For 1999, GM replaced the fourth-generation C/K pickup trucks with an all-new model line; in line with GMC, Chevrolet dropped the C/K nameplate (in favor of a singular Chevrolet Silverado nameplate). Initially marketed with its successor, the final C/K pickup trucks were produced for the 2000 model year. From 2001 to 2002, the final vehicles of the C/K model line were medium-duty chassis cab trucks.

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Common 1991 Gmc C15 problems

The 1991 GMC C15, also known as the GMC S15 Jimmy, is a popular pickup truck that has been known for several common problems based on complaints from owners. Here are some of the most frequently reported issues:

Engine problems: The 1991 GMC C15 has been known to have issues with its engine, particularly with the 4.3-liter V6 engine. Some owners have reported problems with the engine stalling or losing power while driving. This issue can be caused by a variety of factors, including faulty ignition coils, spark plugs, or fuel injectors.
Transmission issues: Another common problem with the 1991 GMC C15 is transmission failure. Some owners have reported that their trucks have experienced transmission slipping, jerking, or failing to shift properly. This issue can be caused by a variety of factors, including low transmission fluid levels, worn-out clutch plates, or a faulty torque converter.
Electrical issues: The 1991 GMC C15 has also been known to have issues with its electrical system. Some owners have reported problems with the truck's lights, gauges, or electrical accessories not working properly. This issue can be caused by a variety of factors, including blown fuses, faulty wiring, or a malfunctioning alternator.
Suspension problems: The 1991 GMC C15 has been known to have issues with its suspension system, particularly with the front suspension. Some owners have reported problems with the truck's front end shaking or vibrating while driving. This issue can be caused by a variety of factors, including worn-out bushings, loose steering components, or a damaged tie rod.
Brake problems: The 1991 GMC C15 has also been known to have issues with its brake system. Some owners have reported problems with the truck's brakes feeling spongy or not working properly. This issue can be caused by a variety of factors, including worn-out brake pads, leaking brake lines, or a faulty brake master cylinder.

It's important to note that not all 1991 GMC C15 trucks will experience these issues, and many owners have reported that their trucks have been reliable and trouble-free. However, if you're considering purchasing a 1991 GMC C15, it's important to be aware of these common problems and to have the truck inspected by a qualified mechanic before making a purchase.

1991 Gmc C15 car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Gmc C15 problems, we found that the most common problems with these 2023 model year vehicles are: