Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1989 P30.
The 1989 Chevrolet P30 is a heavy-duty commercial chassis powered by an engine that takes 4 quarts of 5W-30 API oil and routes output through a 4-speed automatic transmission, returning an EPA-estimated 11 mpg city and 14 mpg highway. This model year saw just one owner complaint—centered on the engine and engine cooling—and three recalls, a remarkably quiet record that aligns with the broader P30 history from 1990 to 1999, where the lowest complaint tally was a single case in 1991, suggesting the 1989 sits at the very start of the platform’s most trouble-free stretch.
Fluid capacities, tune-up values and fuel economy at a glance.
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic 4-spd |
| EPA city / highway / combined | 11 / 14 / 12 mpg |
| Drivetrain | Rear-Wheel Drive |
| Recommended fuel | Regular Gasoline |
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.
| 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 | 5.5 qt |
| Differential Gear Oil | 80W-90 · GL-5 |
| Differential Gear Oil Capacity | 14.0 qt |
| Engine Coolant | ETHYLENE GLYCOL |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The 1989 Chevrolet P30 is not represented in the provided federal record, which spans 1990–1999, making direct complaints and recall data for the target year unavailable. However, the dataset reveals a generation-wide pattern: the early-to-mid 1990s saw the highest complaint and recall activity, with 1990 recording 2 investigations and 3 recalls, and 1994 peaking at 10 complaints—the highest in the dataset—alongside 3 recalls. Complaints then dropped sharply to zero in 1995–1997, while Technical Service Bulletins (TSBs) increased substantially, rising from 1 in 1994 to 7 by 1999, suggesting increased manufacturer-issued guidance rather than field failures. The 1989 model year would have preceded this dataset and likely shares components with the early-1990s models, meaning it may share similar systemic vulnerabilities, particularly in Engine & Engine Cooling, which was the sole complaint area flagged for the target year, with zero crash or fire complaints recorded. The data suggests the 1989 P30 was produced during a period of relative vulnerability before quality refinements reduced complaints, but without specific 1989 recall data, prospective buyers should verify whether any applicable recalls from 1990–1991 also cover the 1989 model year.
All 1 complaints on record, top 1 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 3 campaigns on record for this vehicle.
CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18… Remedy: HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 18, 2006. OWNERS MAY CONTACT FRAM CUSTOMER SERVICE AT 1-800-890-2075 (OPTION…
CERTAIN HONEYWELL FRAM RACING BRAND HP4 AND HP8 OIL FILTERS THAT WERE MANUFACTURED FROM MAY 25, 2006, THROUGH SEPTEMBER 14, 2007, AND SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR VEHICLES LIST ABOVE. THE AFFECTED FILTERS… Remedy: HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING NOVEMBER 2007. OWNERS CAN CONTACT FRAM CUSTOMER SERVICE TOLL-FREE AT 1-800-890-2075.
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
4 qt of 5W-30 API, per the factory manual.
NHTSA lists 3 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 11 city / 14 highway / 12 combined mpg.