TIMING BELT INTERFERENCE CAUTION
Note. CAMSHAFT DRIVE BELTS OR TIMING BELTS - The condition of camshaft drive belts should always be checked on vehicles which have more than 50,000 miles. Although some manufacturers do not recommend replacement at a specified mileage, others require it at 60,000-100,000 miles. A camshaft drive belt failure may cause extensive damage to internal engine components on most engines, although some designs do not allow piston-to-valve contact. These designs are often called "Free Wheeling". Many manufacturers changed their maintenance and warranty schedules in the mid-1980's to reflect timing belt inspection and/or replacement at 50,000-60,000 miles. Most service interval schedules shown in this section reflect these changes. Belts or components should be inspected and replaced if any of the following conditions exist
- Crack Or Tears In Belt Surface
- Missing, Damaged, Cracked Or Rounded Teeth
- Oil Contamination
- Damaged Or Faulty Tensioners
- Incorrect Tension Adjustment
| Application | Engine | Replacement Interval (Miles) |
|---|
| Chevette |
| 1976-77 | 1.4L 4-Cyl | (3) 60,000 |
| 1977-87 | 1.6L 4-Cyl | (3) 60,000 |
| 1981-86 | (2) 1.8L 4-Cyl. Diesel | (3) 60,000 |
| Lumina (Exc. Van) |
| 1991-96 | (2) 3.4L V6 | (3) 60,000 |
| Monte Carlo |
| 1991-96 | (2) 3.4L V6 | (3) 60,000 |
| Monza |
| 1975-77 | 2.3L 4-Cyl | (3) 60,000 |
| Nova |
| 1985-88 | 1.6L 4-Cyl | (3) 60,000 |
| Spectrum |
| 1985-89 | (2) 1.5L 4-Cyl | (3) 60,000 |
| Sprint |
| 1985-88 | 1.0L 3-Cyl | (3) 60,000 |
| Sprint (Canadian) |
| 1989-91 | 1.0L 3-Cyl | (3) 60,000 |
| Vega (Exc. Cosworth) |
| 1971-77 | 2.3L 4-Cyl | (3) 60,000 |
| 1975-76 | 2.0L 4-Cyl | (3) 60,000 |
| (1) Other interference engine applications may exist which are not indicated here. (2) Interference engine. Check for possible damage to piston(s) or valve(s) if there has been a timing belt failure. (3) Although the vehicle manufacturer does not recommend a specific scheduled maintenance interval, aftermarket belt manufacturers suggest the belt be replaced at 60,000 mile intervals. |
| (1) | Other interference engine applications may exist which are not indicated here. |
| (2) | Interference engine. Check for possible damage to piston(s) or valve(s) if there has been a timing belt failure. |
| (3) | Although the vehicle manufacturer does not recommend a specific scheduled maintenance interval, aftermarket belt manufacturers suggest the belt be replaced at 60,000 mile intervals. |
TIMING BELT INTERFERENCE VERIFICATION - CHEVROLET/GMC PASSENGER CARS (1)
| Application | Engine | Replacement Interval (Miles) |
|---|
| LUV |
| 1981-82 | (2) 2.2L 4-Cyl. Diesel | 60,000 |
| S10 Pickup |
| 1983-85 | (2) 2.2L 4-Cyl. Diesel | 60,000 |
| Tracker (Canadian) |
| 1989-96 | 1.6L 4-Cyl | (3) 60,000 |
| (1) Other interference engine applications may exist which are not indicated here. (2) Interference engine. Check for possible damage to piston(s) or valve(s) if there has been a timing belt failure. (3) Although the vehicle manufacturer does not recommend a specific scheduled maintenance interval, aftermarket belt manufacturers suggest the belt be replaced at 60,000 mile intervals. |
| (1) | Other interference engine applications may exist which are not indicated here. |
| (2) | Interference engine. Check for possible damage to piston(s) or valve(s) if there has been a timing belt failure. |
| (3) | Although the vehicle manufacturer does not recommend a specific scheduled maintenance interval, aftermarket belt manufacturers suggest the belt be replaced at 60,000 mile intervals. |
TIMING BELT INTERFERENCE VERIFICATION - CHEVROLET/GMC LIGHT TRUCKS (1)
| Application | Engine | Replacement Interval (Miles) |
|---|
| Passenger Cars |
| Acadian (Canadian) |
| 1976-77 | 1.4L 4-Cyl | (3) 60,000 |
| 1976-87 | 1.6L 4-Cyl | (3) 60,000 |
| 1981-84 | 1.8L 4-Cyl. Diesel | (3) 60,000 |
| Astre |
| 1973-77 | 2.3L 4-Cyl | (3) 60,000 |
| Firefly (Canadian) |
| 1985-96 | 1.0L 3-Cyl | 60,000 |
| 1995-96 | 1.3L 4-Cyl | 60,000 |
| Grand Am |
| 1987-89 | 2.0L 4-Cyl | (3) 60,000 |
| Grand Prix |
| 1991-96 | (2) 3.4L V6 | 60,000 |
| J2000 |
| 1982-84 | 1.8L 4-Cyl | (3) 60,000 |
| LeMans |
| 1988-93 | (2) 1.6L 4-Cyl | (3) 60,000 |
| 1988-90 | 2.0L 4-Cyl | (3) 60,000 |
| Sunbird |
| 1976-77 | 2.3L 4-Cyl | (3) 60,000 |
| 1985-86 | 1.8L 4-Cyl | (3) 60,000 |
| 1987-94 | 2.0L 4-Cyl | (3) 60,000 |
| Sunburst (Canadian) |
| 1985-88 | (2) 1.5L 4-Cyl | (3) 60,000 |
| T1000 |
| 1976-77 | 1.4L 4-Cyl | (3) 60,000 |
| 1976-87 | 1.6L 4-Cyl | (3) 60,000 |
| 1000 |
| 1982-87 | 1.6L 4-Cyl | (3) 60,000 |
| 2000 |
| 1982-84 | 1.8L 4-Cyl | (3) 60,000 |
| 2000 Sunbird |
| 1982-84 | 1.8L 4-Cyl | (3) 60,000 |
| Light Trucks |
| Sunrunner |
| 1992-94 | 1.6L 4-Cyl | (3) 60,000 |
| (1) Other interference engine applications may exist which are not indicated here. (2) Interference engine. Check for possible damage to piston(s) or valve(s) if there has been a timing belt failure. (3) Although the vehicle manufacturer does not recommend a specific scheduled maintenance interval, aftermarket belt manufacturers suggest the belt be replaced at 60,000 mile intervals. |
| (1) | Other interference engine applications may exist which are not indicated here. |
| (2) | Interference engine. Check for possible damage to piston(s) or valve(s) if there has been a timing belt failure. |
| (3) | Although the vehicle manufacturer does not recommend a specific scheduled maintenance interval, aftermarket belt manufacturers suggest the belt be replaced at 60,000 mile intervals. |
TIMING BELT INTERFERENCE VERIFICATION - PONTIAC (1)
