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1990 GMC Suburban problems

The most common problem on the 1990 GMC Suburban is brakes. It has 4.4 times the complaints of a typical Suburban model year.

Typical year4.4x the typical complaints
Owner complaints
22
Recalls
2
Service bulletins
4
Worst area
Brakes
Fuel economy
12-17mpg

The worst 1990 GMC Suburban problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

  • Brakes
    9
  • Seats
    7
  • Acceleration
    2
  • Suspension
    2
  • Transmission
    2

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

  • Brakes
    9
  • Seats
    7
  • Acceleration
    2
  • Suspension
    2
  • Transmission
    2
  • Electrical
    1
  • Tires
    1
  • Wheels
    1

Recalls 2

SeatsReported November 16, 1993 · 604,207 vehicles affected
What is wrong
The recliner mechanism and the seat frame may have foam and/or vinyl between them, creating a "soft" joint. This "soft" joint results in lower than specified bolt torque which leads to joint looseness, causing bolt fatigue and eventual bolt failure.
Risk
If bolt failure occurs to the driver's seat, it wouldallow the seat back to suddenly recline, and could result in loss of vehiclecontrol and a vehicle crash without prior warning.
Remedy
Dealers will remove the foam and/or vinyl from between the recliner mechanism and the seat frame "soft" joint and replace the recliner bolts.

Recall number 93V187000 · Recall details

Power train: automatic transmissionReported February 1, 1993 · 1,702,880 vehicles affected
What is wrong
Unanticipated heat in the transmission can force the transmission fluid out of the vent tube.
Risk
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.

Recall number 93V016000 · Recall details

See all 2 recalls for the 1990 GMC Suburban

Defect investigations

Engine compartment firesOpened July 29, 1994, closed July 31, 1996

An alleged malfunction in the atlernator resulting in engine compartmet fires.

EA94029

Seat back bolt breakageOpened June 24, 1992, closed November 19, 1993

There is no summary currently available

EA92022

Seat back failuresOpened March 6, 1992, closed June 24, 1992

There is no summary currently available

PE92026

Trailer hitch seperationOpened October 10, 1989, closed February 2, 1990

There is no summary currently available

PE90004

Technical service bulletins for the 1990 GMC Suburban 4

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

1990 GMC Suburban fuel economy

Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.

EngineDriveCityHighwayCombined
6.2L 8‑cyl DieselRWD152117
6.2L 8‑cyl Diesel4WD141916
5.7L 8‑cylRWD121714
5.7L 8‑cyl4WD1113-1512-13

What 1990 GMC Suburban owners say

Most recent owner complaints, unedited.

Filed Mar 12, 2002 · Electrical · WI · 1 injury

Consumer raised hood; attempted to start vehicle, after vehicle would not start, douglas battery suddenly blew up, consumer was injured. *ak

Filed Mar 6, 2002 · Brakes · CA

Consumer states the metal parking brake cable wears into the rubber brake hose, which could cause failure of the brake hose and the rear brakes, the rubber brake hose was almost worn to the point of failure, the metal parking brake cable does have a metal sleeve on it to protect the rubber hose, but the natural position of the hose and cable causes the sleeve to not line up in the desired position.

Filed Mar 6, 2002 · Brakes · CA

I believe the suburban series vehicles have a design defect in the brake system because the rear brake hose(from the body to a connector above the differential) is used as a support for the parking brake cable. The stronger, heavier parking brake cable rubs on the rubber brake hose, causing the rubber hose to fail. The parking brake cable does have a 2inch metal sleeve over it near where the hose and cable rub. However, this sleeve is not located where the natural lay of the hose/cable is. In fact, the sleeve has a rough edge on it, which causes additional wear on the rubber hose. The rubber brake hose is also bent where it connects to the truck body because the hose must support the weight of the parking brake cable. The rubber brake hose on my suburban was almost worn through when I noticed it. I believe the fix could be that the parking brake cable be routed below the rubber brake hose with a rubber doughnut between the hose/cable.o.

Filed May 14, 2001 · Suspension · CA

Upper ball joints were replaced 9/25/99 by suspension plus in san diego using mcquay norris parts.. On or about 11/04/2000 the vehicle was turning at low speed left turn into a parking lot when the right front wheel collapsed under the front end. Subsequent repair action determined that the replaced upper ball joint assembly had failed by separation of the ball joint retainer assembly from the ball joint. The failure occurred after 9,000 miles of operation. We have the failed part.

Filed May 12, 2001 · Acceleration · PA

Driving on highway. The vehicle started racing. Could not stop. Put in nuetral,engine racing. Shut engine . Later found that the hook from servo had rusted and broken off and the bar attached to the throttle had gotten stuck in the throttle. This hook should not be of a material that can rust & break off like that. Also I have looked into the service manual & there is no mention of service to that part atall.why will the mechanic even look at that part if there is no mention for maintenance to that part. That just means that gm felt that this part shall last till I can drive the car.I could have had a major accident and I could stop only because I knew what to do. The engine was reving like crazy when I stopped.

Filed Apr 10, 2001 · Brakes, Suspension · CA

Consumer was hearing noise from brakes when coming to a stop, was inspected, and was advised that front brakes were needed, and rear shocks were leaking.

Filed Feb 22, 2001 · Seats · ID

Frame of seat back snapped when driver entered vehicle and got into seat.

Filed Feb 7, 2001 · Seats · TX

Recall 93v187000, was performed, seat bolts broke 2 times after that, and 3rd time consumer had to replace whole seat frame.

Filed Sep 8, 2000 · Tires · VA

While driving about 65 MPH right rear tire had a tread separation. But, consumer could keep control of vehicle at that time. Bridgestone 31.1050 r16.

Filed Sep 30, 1999 · Transmission · AZ

We recently purchased this vehicle used from a dealership. I am very disappointed with my first gmc purchase so far. Within two months of buying this car, I had to replace the entire rear axle. Now, two months later, the transmission went bad and needs to be replaced as well. I dont understand how dealerships can sell these cars with such problems and the manufactures need to address the problems and resolve them. Any info would be greatly appreciated!

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Compare the 1990 GMC Suburban

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Questions about the 1990 GMC Suburban

Is the 1990 GMC Suburban reliable?

Owners have filed 22 complaints about the 1990 GMC Suburban, 4.4 times a typical Suburban model year.

What is the most common problem with the 1990 GMC Suburban?

Brakes, with 9 complaints. Next is seats (7).

How many recalls does the 1990 GMC Suburban have?

2 recalls, covering seats and power train.

What year does the GMC Suburban have bad brakes?

The GMC Suburban model years with the most brakes complaints are 1994 (276 complaints), 1993 (162 complaints) and 1999 (123 complaints).

What gas mileage does the 1990 GMC Suburban get?

Official estimates for the 1990 GMC Suburban range from 12 to 17 mpg combined. The most efficient version (6.2L 8-cyl diesel, RWD) gets 15 city and 21 highway.

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