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Resources for the Repair and Maintenance of your 1990 GMC Suburban 1500

1990 GMC Suburban 1500

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1990 GMC Suburban 1500 Problems

Drive Train -- Verified

Our technicians highly recommend that the transmission is serviced every 30,000 miles to avoid problems and maintain optimal operating order.

Engine -- Verified

A coolant leak may develop form the Intake manifold gasket causing overheating complaints. The coolant leak may be internal allowing coolant to mix with the engine oil, this condition can result in internal engine damage. Be aware that this problem is often mistaken as a blown head gasket.

Engine -- Verified

Faulty glow plugs and incorrect wiring to the glow plugs have been known to cause "hard start" problems.

Engine -- Verified

The injection system may need to be adjusted more frequently than recommended.

Suspension & Steering -- Verified

The pitman arm and/or lower ball joints may wear causing loose steering and alignment issues. Replacement of worn components will be necessary before the alignment can be properly set to specification.

1990 GMC Suburban 1500 Recalls (Recent)

Body, Interior & Misc., January 20, 1994

Summary: 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.

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Drive Train, March 13, 1993

Summary: UNANTICIPATED HEAT IN THE TRANSMISSION CAN FORCE THE TRANSMISSION FLUID OUT OF THE VENT TUBE.

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1990 GMC Suburban 1500 Questions and Answers

gotyah, 1990 GMC Suburban 1500, Gasoline, Hartland, WI

my 1988 suburban keeps stalling. It starts no problem, but when put into gear it stalls also stalls when backing up or inching forward. Runs fine in idol, and if I put brake and little gas at same ...

kmestas, 1990 GMC Suburban 1500, Augusta, KS

my brake light is one and my turn signals arnt working or blinking inside and out.

Visitor, 1990 GMC Suburban 1500, Greeley, CO

The brake service light stays on all of the time. Is this an indication of a bad pressure switch? I notice that there is a "port" on either side of the pressure switch, what are these for?

greasymonkey, 1990 GMC Suburban 1500, 5.7L V8, Belmont, NC

i have a 87 suburban. the rear wheel cyclinder went out. we replaced it 3 times. still no brakes so we replaced the master cyclinder and rebleed the brakes. still no breaks. the fluid is getting to...

Visitor, 1990 GMC Suburban 1500, Gasoline, Sevierville, TN

hen setting still the engine idles smooth but when i put it in gear an take off the engine runs real ruff.

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1990 GMC Suburban 1500 Reviews

This workhorse Suburban was very rough around the edges. With less than 100,000 miles it blew a headgasket. We also had a tire blowout on I-5 that luckily didn't cause an accident. I never felt very comfortable driving the truck and it just required too much repair given how young it was.

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