GM Service Manual Online
For 1990-2009 cars only

Troubleshooting Hints

    • Check condition of CRNK circuit breaker. If circuit breaker is open, locate and repair cause of overload. Replace circuit breaker if necessary.
    • Check that G101 is clean and tight.
    • Check that the ether cylinder is properly charged.
    • These diagnostics assume that the engine does crank. If engine will not crank, refer to Starter Solenoid Does Not Click for AT automatic transmission Starter Solenoid Does Not Click for manual transmission.
    • If the ether start system is operating at temperatures above -5°C (23°F), replace the ether injector engine coolant temperature switch.
    • Check for a broken (or partially broken) wire inside the insulation which could cause system malfunction but prove good in a continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitering for a voltage drop with the system operational (under load).
    • Check for proper installation or aftermarket equipment which may affect the integrity of other systems.