1986 Gmc Gmc truck problems

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

GMC (formerly the General Motors Truck Company (1911–1943), or the GMC Truck & Coach Division (1943–1998)) is a division of American automotive manufacturer General Motors (GM) for trucks and utility vehicles. GMC currently makes SUVs, pickup trucks, vans, and light-duty trucks. In the past, GMC also produced fire trucks, ambulances, heavy-duty trucks, military vehicles, motorhomes, transit buses, and medium duty trucks.

While many of their vehicles are mechanically similar, GMC is positioned as a premium offering to the mainstream Chevrolet brand, and includes the luxury trim Denali. In North America, GMC vehicles are almost always sold alongside Buick (another premium brand) vehicles at multi-brand dealerships.

History

Roots to the GMC brand can be traced to 1900, when the "Grabowsky Motor Company" was established by brothers Max (1874-1946) and Morris Grabowsky, in Detroit, and renamed Rapid Motor Vehicle Company in 1902 when the brothers moved operations to Pontiac, Michigan. In 1909, William C. Durant gained control of Rapid Motor Vehicle Company and made it a subsidiary of his General Motors Company.

In 1911, General Motors formed the "General Motors Truck Company" and folded Rapid and Reliance Motor Car Company (another early commercial vehicle manufacturer that Durant had acquired in 1908) into it. In 1912, the Rapid and Reliance names were dropped in favor of "GMC". All General Motors truck production was consolidated at the former Rapid Motor Plant 1 in Pontiac, Michigan.

GMC maintained three manufacturing locations in Pontiac, Michigan, Oakland, California, and St. Louis, Missouri .

In 1916, a GMC truck crossed the country from Seattle to New York City in thirty days, and in 1926, a 2-ton GMC truck was driven from New York to San Francisco in five days and 30 minutes. During the First World War, the company provided the Model 16 3/4-ton truck, and modified its production to provide 1-ton troop carriers and aviation support vehicles, and by 1918, more than 90 percent of GMC truck production was for military use. GMTC provided a total of 8512 trucks to the U.S. government during the war years and earned a Distinguished Service Award. During the Second World War, GMC Truck produced 600,000 trucks for use by the United States Armed Forces.

In 1923, GMC trucks were exported to Japan to help recovery and reconstruction as a result of the Great Kantō earthquake, and the company continued to provide vehicles as the transportation infrastructure was rebuilt. Before the earthquake struck, most of Japan's transportation of commerce and people was by wooden carts and government owned railroads, which were severely damaged when the train tracks were twisted beyond use. Autonomous trucks were much more effective at traveling to heavily damaged areas.

In 1925, GM purchased a controlling interest in Yellow Coach, a bus and taxicab manufacturer based in Chicago, Illinois which was founded by John D. Hertz. The company was renamed Yellow Truck & Coach Manufacturing Company (YT&CMC), an affiliated subsidiary of General Motors. All manufacturing operations of General Motors Truck Company were placed under YT&CMC. In 1928 Plant 2 opened and all headquarters staff moved to the administration building at 660 South Boulevard E in Pontiac, MI. In 1943, GM purchased the remaining interest in YT&CMC and renamed it GMC Truck and Coach Division.

In 1981, GMC Truck & Coach Division became part of GM Worldwide Truck & Bus Group. Bus production ended in May 1987 and the division name was changed from GMC Truck & Coach to GMC Truck Division. The Canadian plant (in London, Ontario) produced buses from 1962 until July 1987. GM withdrew from the bus and coach market because of increased competition in the late 1970s and 1980s. Rights to the RTS model were sold to Transportation Manufacturing Corporation, while Motor Coach Industries of Canada purchased the Classic design. In 1998, GMC's official branding on vehicles was shortened from "GMC Truck" to simply "GMC".

In 1996, GM merged GMC Truck Division with the Pontiac Motor Division in order to "give the combined division a brand image projecting physical power and outdoor activity". This coincided with many GMC dealerships merging with Pontiac dealerships, allowing a single dealer to offer both trucks and entry-to-mid-level cars, using a similar approach already in use by Chevrolet.

In 2002, GMC celebrated its 100th anniversary and released a book entitled GMC: The First 100 Years, a complete history of the company.

In 2007, GMC introduced the Acadia, a crossover SUV, which was the division's second unibody vehicle (after the Vandura) whose predecessor, the GMT-360 based Envoy, was discontinued with the closure of GM's Moraine, Ohio plant on December 23, 2008.

In 2009, GMC ended production of medium-duty commercial trucks after over 100 years. They became exclusive to Chevrolet with the launch of the 4500HD/5500HD Silverado in 2018. Also in 2009, GMC introduced the Terrain, a mid-size crossover SUV based on the GM Theta platform shared with the Chevrolet Equinox. It replaced the Pontiac Torrent after the brand's demise.

In 2020, General Motors announced the return of the Hummer nameplate, this time as a sub-brand of GMC instead of a stand-alone division. The Hummer lineup includes two models, an electric pickup truck and SUV, to be sold as the "GMC Hummer EV". According to GM, the Edition 1 production electric pickup truck will feature 1,000 horsepower, hit 60 mph in 3 seconds and is scheduled to launch in late 2021. The new Hummer EV was revealed on October 20, 2020.

In 2022, the GMC brand was introduced in South Korea as a subsidiary of GM Korea.

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Common 1986 Gmc Gmc truck problems

The 1986 GMC truck is known for several common problems that owners have reported. One of the most frequent issues is excessive oil consumption. This problem typically arises in 2007-2013 GMC and Chevy truck models, but it can also affect earlier models like the 1986 GMC truck. The excessive oil consumption is caused by worn-out piston rings or cylinder walls, which can lead to a decrease in engine performance and fuel efficiency.

Another common problem with the 1986 GMC truck is alternator failure. This issue is more prevalent in older Sierras and Silverados, where the alternator may eventually fail, causing the battery to die and potentially leading to an abnormal noise. This problem may or may not trigger a dash warning light, and it typically occurs around 125,000 miles. Replacing the alternator can cost between $300 and $400.

Internal distributor faults are another issue that some 1986 GMC truck owners have reported. This problem is less common than others but can cause a squealing noise from the distributor and lead to rough engine running or stalling. The check engine light may or may not come on in this situation. Overhauling or replacing the internal distributor is necessary to correct this problem, and it typically becomes apparent around 130,000 miles.

The 1986 GMC truck's trans cooling system is also known to cause problems. This issue can lead to the replacement of the transmission twice, as in the case of a 1995 K1500 ext cab z71 owner who reported having to replace the transmission due to the trans cooling system twice in nine years.

Lastly, the 1986 GMC truck may experience starting problems, which can be caused by various factors, such as a faulty starter, solenoid, ignition module, or neutral switch. In some cases, there may be an inline fuse that needs to be checked. Additionally, checking the spark from the ignition, the timing position, and ensuring the truck has air, fuel, and spark are essential steps in diagnosing and fixing starting problems.

In summary, the 1986 GMC truck is known for several common problems, including excessive oil consumption, alternator failure, internal distributor faults, trans cooling system issues, and starting problems. Regular maintenance and timely repairs can help prevent or address these issues, ensuring the truck's longevity and reliability.

What year GMC trucks are the most reliable?

Overall, the GMC Sierra 1500 is worth it if you're willing to keep up with regular maintenance for the machine. We recommend 2004, 2011, 2012, 2016, 2017, and 2018 options as your top picks on the market.

Are GMC Sierra trucks reliable?

Yes, GMC trucks are among the most reliable pickups on the market. Year after year, the J.D. Power Dependability Study has ranked the Sierra 1500 and Sierra 2500HD in the top five of their respective segments.

How long do GMC truck engines last?

Key Points. With proper maintenance, a GMC Sierra 1500 should run for a minimum of 200,000 miles, with some units having topped half a million. Annual maintenance costs average in the low-$700 range, with less frequent major problems than most pickups.

How much horsepower does a 1986 GMC Sierra have?

1986 GMC C/K 1500 Series is 2 doors Pickup available in 2 variants MSRP ranges from $8455 to $10875. GMC C/K 1500 Series offers 155 horsepower with the 4-Speed Automatic transmission.

Are GMC trucks good or bad?

The Sierra is a light-duty truck, rated number one in safety for 2020. The GMC Canyon is the automaker's heavy-duty pickup truck. There are three trims, all of which are part of the GMC Canyon reliability that ranks above average in J.D. Power's 2023 U.S. Vehicle Dependability Survey (VSD) for 2023.

What year GMC trucks are the most reliable?

How long do GMC truck engines last?

Does GMC Sierra have engine problems?

The 2022 GMC Sierra engine issues are one of the largest GMC scandals in recent years. It is more than likely that customers will be dissuaded from buying this truck in the near future but hopefully, General Motors will manage to address all the issues quickly.

1986 Gmc Gmc truck car problems categorized by type of issue

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

Structure problems
Tires problems

The graph below shows statistics for all 1986 Gmc Gmc truck vehicle components and the number of complaints received.

1986 Gmc Gmc truck complaints

The NHTSA has received 2 complaints about various vehicle components related to the 1986 Gmc Gmc truck.

2010-08-07

STRUCTURE PROBLEM

Date Of Incident: 2008-08-22
VIN: 1GTDC14H3GF
Components: STRUCTURE
Summary: FRAME CRACKING BY GEAR BOX CAUSE TRUCK TO SHACK AND GEAR BOX CAN COME OFF FROM FAME, 4 WHEEL DRIVES ARE WORSE THEN 2 WHEEL. MINE WAS 2 WHEEL. *TR

Add Complaint

2000-09-11

TIRES PROBLEM

Date Of Incident: 2000-08-07
VIN: 26THG31M1G4
Components: TIRES
Summary: WHILE DRIVING, FIRESTONE STEELTEX RADIAL A/T TIRE 9.5 R16 5LT DOT VNXL EXPERIENCED TREAD SEPARATION. *SLC

Add Complaint

Additional sources

More sources of information about 1986 Gmc Gmc truck problems:

Inline 292 mods, parts, common problems - 67-72 Chevy Trucks

http://67-72chevytrucks.com/vboard/showthread.php?t=591042

Inline 292 mods, parts, common problems The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board.

Common problems...?? | Chevy Silverado and GMC Sierra Forum

https://www.silveradosierra.com/threads/common-problems.731891/

Oct 8, 2020 ... Other than that, the HD trucks are more reliable and more capable than the 1500 trucks. 2015 Duramax, 1986 M1031, 2006 1500HD. Save Share.