Pontiac›6000›1991›Overview/pontiac/6000/1991/base/

1991 Pontiac 6000

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1991 6000.

Defined by maintenance requirements that include 4 qt of 5W-30 API oil, the 1991 Pontiac 6000 presents a specific profile for technical review. Documentation for this model year captures 2 recalls and a total of 6 owner complaints, providing a concrete record of owner experiences. Given that the top complaint area centers on Engine & Engine Cooling, researchers should prioritize this system when determining where this model year sits within the vehicle's overall reliability history.

Model year1991 1990 1989 1988 1987 1986 1985 1984 1983

Quick specs

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

Engine oil capacity4 qtOEM · verified

Engine oil type5W-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 12737090. Note the factory fuel filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known.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	12737090 alt 25012305
Engine air filter	25043317 alt 25043119
Fuel filter	25121970 discontinued
Spark plug	19354418 alt 05614046
Front wiper blades	15184702
Serpentine belt	19244954 alt 10041195
Thermostat	19435095 alt 10207373

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length	193.3 in
Overall width	72 in
Overall height	53.9 in
Wheelbase	104.7 in
Curb weight	3168 lb

Service quick specs OEM factory data

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

This engine holds 4 qt of 5W-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	3.8 qt
Engine Coolant	ETHYLENE GLYCOL
Engine Oil	5W-30 · API
Engine Oil Capacity	4 qt
Engine Oil	5W-30 · API
Engine Oil Capacity	4 qt

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter at 7,500 mi; spark plugs every 30,000 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 7,500 mi	Engine Oil Filter (replace) · Throttle Body (torque) · Tire & Wheel Assembly (rotate)
Every 7,500 mi	Axle Shaft Oil Seal (inspect) · Body Latches, Locks & Hinges (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · Engine Oil (drain & refill) · Exhaust System (Complete) (inspect)
Every 15,000 mi	Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 30,000 mi	Accessory Drive Belt (inspect) · EGR System (inspect) · Engine Coolant System (drain, flush & refill) · PCV System (inspect) · Spark Plug Wires (inspect) · Spark Plugs (replace)
Every 100,000 mi	Transmission Fluid & Filter (replace)

Reliability & federal safety record

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

The 1991 Pontiac 6000 shows a notable improvement in reliability compared to its 1990 predecessor, with complaints dropping from 11 to 6 while maintaining the same number of recalls (2) and investigations (2). This suggests that Pontiac addressed some of the prior year’s issues, though the introduction of a technical service bulletin (TSB) in 1991 indicates lingering concerns requiring dealer-level attention. The complaint distribution for 1991 is diffuse, with no single issue dominating—engine/cooling, seats, brakes, and unspecified problems each account for just one report—unlike some model years where a pattern emerges. The absence of fire-related complaints and only one crash-related report further distinguishes 1991 as a relatively stable point in the generation’s lifecycle. However, the persistence of two recalls and investigations implies that while fewer owners reported problems, unresolved safety or engineering risks remained. **Takeaway:** The 1991 model year is a comparatively strong choice within this generation, but verify recall completions and prioritize a pre-purchase inspection to confirm no lingering issues from the TSB or prior recalls.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

1 involved a crash · 0 a fire

Owner complaints filed with NHTSA, by component

All 6 complaints on record, top 6 components.

Engine & Engine Cooling1

Seats1

Unknown Or Other1

Service Brakes, Hydraulic1

Power Train1

Wheels1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

92V124000Seats:Front Assembly:ReclinerReported 01/09/1992

THE POWER SEAT OR RECLINER WIRING HARNESS CAN BE PINCHED OR CAN CHAFE ON THE SEAT FRAME OR SPRING SUPPORT ROD, WEARING THROUGH THE WIRE INSULATION AND CAUSING AN ELECTRICAL SHORT. Remedy: REPAIR ANY ABRADED WIRING AND REROUTE THE WIRING HARNESS USING A WIRING HARNESS CLIP.

95V173000Seat Belts:Front:AnchorageReported 15/09/1995

THESE VEHICLES WERE ASSEMBLED WITH REAR OUTBOARD SAFETY BELT ANCHORAGES THAT MAY NOT WITHSTAND THE REQUIRED LOAD. THIS DOES NOT COMPLY WITH FMVSS NO.210, "SEAT BELT ASSEMBLY ANCHORAGES." Remedy: DEALERS WILL REPLACE THE EXISTING ANCHOR BOLTS WITH A NEW SHOULDER BOLT AND THREAD LOCKING ADHESIVE. ADDITIONALLY, NOISE CONTROL PATCHES WILL BE APPLIED AT EACH ANCHORAGE.

Technical service bulletins NHTSA · verified

Showing 1 of 1 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
130089009	2013-09-01	Engine And Engine Cooling	Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420

Catalyst system efficiency below threshold — Bank 1

P0300

Random / multiple cylinder misfire detected

P0171

System too lean — Bank 1

P0455

Evaporative emission system leak detected — large leak

P0128

Coolant thermostat below regulating temperature

P0442

Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN

Decode a VIN to confirm the transmission and build data for a specific 6000. OEM

Build data

Plant, GVWR class, engine and body data for any 17-character VIN.

Recalls

Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Vehicles taking 4 qt Engine oil filter 12737090 Engine air filter 25043317 Fuel filter 25121970 Spark plug 19354418

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBs OBD-II trouble codes Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 1991 6000 take?

4 qt of 5W-30 API, per the factory manual.

Does the 1991 6000 have open recalls?

NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.