Consumer raised hood; attempted to start vehicle, after vehicle would not start, douglas battery suddenly blew up, consumer was injured. *ak
The worst 1990 GMC Suburban problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes9
- Seats7
- Acceleration2
- Suspension2
- Transmission2
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes9
- Seats7
- Acceleration2
- Suspension2
- Transmission2
- Electrical1
- Tires1
- Wheels1
Recalls 2
Seats
- 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 transmission
- 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 fires
An alleged malfunction in the atlernator resulting in engine compartmet fires.
EA94029
Seat back bolt breakage
There is no summary currently available
EA92022
Seat back failures
There is no summary currently available
PE92026
Trailer hitch seperation
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.
- Diagnosis of cracked or broken transmission case. tt 2006 and prior cars and light duty trucks. tt
- Diagnostic information for intermittent transmission downshift, slip, busy/cycling tcc or noisy cooling...
- Cold engine knock. tw
- New cast iron exhaust manifold and stainless steel gasket to correct engine noise condition. tw
1990 GMC Suburban fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 6.2L 8‑cyl Diesel | RWD | 15 | 21 | 17 |
| 6.2L 8‑cyl Diesel | 4WD | 14 | 19 | 16 |
| 5.7L 8‑cyl | RWD | 12 | 17 | 14 |
| 5.7L 8‑cyl | 4WD | 11 | 13-15 | 12-13 |
What 1990 GMC Suburban owners say
Most recent owner complaints, unedited.
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.
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.
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.
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.
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.
Frame of seat back snapped when driver entered vehicle and got into seat.
Recall 93v187000, was performed, seat bolts broke 2 times after that, and 3rd time consumer had to replace whole seat frame.
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.
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!
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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