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1989 GMC Truck Suburban 4WD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1989 Suburban 4WD.

The 1989 GMC Truck Suburban 4WD is a utility vehicle whose routine maintenance involves a 5-quart engine oil capacity requiring 5W-30 or 10W-30 API viscosity. Its reliability profile is notably robust for its era, marked by just 21 total owner complaints and 2 recalls, with the top complaint area centering on the seats. When contextualized within the model's broader complaint history spanning 1990 to 2004, this 1989 iteration sits firmly at the lower, more dependable end of the spectrum, far removed from the 480 complaints of the 1994 peak year and closely aligning with the single-complaint low of 2004. This positioning indicates that the 1989 model represents a notably durable chapter in the vehicle's history, offering researchers a baseline of early build quality before subsequent generations encountered greater owner dissatisfaction.

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity5 qtOEM · verified

Engine oil type5W-30 / 10W-30 APIOEM · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses OE oil filter 25160561. Note the factory fuel filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

OE service part numbers OEM · verified

Engine oil filter	25160561
Engine air filter	08996118 alt 06484235
Fuel filter	25171792 discontinued · alt 25011765
Front wiper blades	15184702 alt 12363297
Serpentine belt	10112415 alt 15613398
Thermostat	14077122 alt 10207373

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 5 qt of 5W-30 / 10W-30 API engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake Fluid	DOT 3
Differential Gear Oil	80W-90 · GL-5
Differential Gear Oil Capacity	14.0 qt
Differential Gear Oil	80W-90 · GL-5
Differential Gear Oil Capacity	4.9 qt
Engine Coolant	ETHYLENE GLYCOL
Engine Oil	5W-30 · API · 10W-30
Engine Oil Capacity	5 qt

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 5,000 mi; coolant every 30,000 mi. The big-interval services (every 30,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

At 5,000 mi	Drive Axle Assembly (drain & refill) · Universal Vehicle Operation (inspect idle speed)
Every 5,000 mi	Brake System (inspect) · Differential (inspect fluid level) · Engine Oil Filter (replace) · Parking Brake System (inspect) · Steering System (inspect) · Suspension System (inspect)
At 7,500 mi	Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 7,500 mi	Body Latches, Locks & Hinges (inspect) · Brake Line (inspect) · Brake Linings (inspect) · Engine Oil (drain & refill) · Exhaust System (Complete) (inspect) · Parking Brake Cable (lubricate)
Every 10,000 mi	Air Intake System (inspect) · Radiator Fan Assembly (inspect) · Tire & Wheel Assembly (rotate) · Underbody Splash Shield (inspect)
Every 15,000 mi	CV Joint Boot (inspect) · Driveshaft U-Joint (lubricate) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 30,000 mi	Clutch Cross Shaft (lubricate) · Clutch Release Lever Pivot Points (lubricate) · EGR System (inspect) · Engine Air Filter Element (replace) · Engine Breather Filter (replace) · Engine Coolant System (drain, flush & refill)
Every 60,000 mi	Accessory Drive Belt (inspect) · Crankcase Depression Regulator Valve (inspect) · Exhaust Pressure Regulator (inspect) · Fuel Line (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

Owner complaints about the 1989 GMC Truck Suburban 4WD lead in one area — the seats, 4 of 21 reports (19%), well ahead of the next concern. That matters, because the seats are also the target of recall 93V-187 on this vehicle — so the single most useful check before buying or servicing one is confirming it was actually performed. 2 of the reports describe a crash and 1 a fire — a small share of the total, but worth weighing against the seats pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

2 involved a crash · 1 a fire

Owner complaints by model year NHTSA · this generation & adjacent

’90 ’91 ’92 ’93 ’94 ’95 ’96 ’97 ’98 ’99 ’00 ’01 ’02 ’03 ’04

Owner complaints filed with NHTSA, by component

All 21 complaints on record, top 8 components.

Seats4

Seat Belts4

Engine & Engine Cooling3

Tires2

Service Brakes, Hydraulic2

Steering2

Seat Belts,Unknown Or Other1

Electrical System1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

93V016000Power Train:Automatic TransmissionReported 01/02/1993

UNANTICIPATED HEAT IN THE TRANSMISSION CAN FORCE THE TRANSMISSION FLUID OUT OF THE VENT TUBE. Remedy: INSTALL A LONGER TRANSMISSION VENT HOSE ROUTED TO THE LEFT SIDE OF THE ENGINE COMPARTMENT OF THE VEHICLE.

93V187000SeatsReported 16/11/1993

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… 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.