You will need to know your vehicle’s engine size to use this table. Once you know, you can determine your Geo timing belt interval by using the first table and the reference key. Be sure to look at the second table to see whether or not the engine is interference-fit.
| 1.0L | {1} |
| 1.3L | Replace Every 100,000 Miles |
| 1.5L | Replace Every 60,000 Miles |
| 1.6L (Prizm) | {26} |
| 1.6L (Storm) | Replace Every 60,000 Miles |
| 1.6L (Tracker) | {30} |
| 1.8L | {26} |
Interference/non-interference
| 1.0L | Interference |
| 1.3L | Interference |
| 1.5L | Interference |
| 1.6L DOHC (1989-92 Prizm GSI) | Free-Wheeling |
| 1.6L DOHC (1989-97 Prizm Except 1989-92 GSI) | Interference |
| 1.6L DOHC (Storm) | Interference |
| 1.6L SOHC (Prizm) | Free-Wheeling |
| 1.6L SOHC (Storm) | Free-Wheeling |
| 1.6L SOHC 8 Valve Engine (Tracker) | Free-Wheeling |
| 1.6L SOHC 16 Valve Engine (Tracker) | Interference |
| 1.8L DOHC (Prizm) | Interference |
| 1.8L DOHC (Storm) | Interference |
Reference key
{1} – Manufacturer does not recommend a specific maintenance interval.
{26} – On 1989-95 engines operated under normal service, manufacturer does not recommend a specific maintenance interval. On 1996-97 engines operated under normal service, replace every 90,000 miles or 72 months. On all engines operated under severe conditions, replace at 60,000 mile intervals.
{30} – On 1989-94 models, manufacturer does not recommend a specific maintenance interval. On 1995-2001 models, replace every 100,000 miles.
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