Starting System Check. GMC Truck GMC P42 Commercial Chassis 1998

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC P42 Commercial Chassis 🢒 Engine 🢒 Engine Electrical 🢒 Starting System Check

Step	Action	Normal Result(s)	Abnormal Result(s)*
1	Place the automatic transmission in PARK or manual transmission in NEUTRAL with the brakes applied and clutch depressed. Turn the ignition switch to RUN, leaving the engine off.	The voltmeter shows approximately 12 V.	Charging System Check
2	Turn the ignition switch to START.	The engine cranks normally and the starter does not make unusual noises.	Starter Solenoid Does Not Click Starter Solenoid Clicks, Engine Does Not Crank Starter Motor Noise Diagnosis
* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.

Step

Action

Normal Result(s)

Abnormal Result(s)*

Place the automatic transmission in PARK or manual transmission in NEUTRAL with the brakes applied and clutch depressed.
Turn the ignition switch to RUN, leaving the engine off.

The voltmeter shows approximately 12 V.

Turn the ignition switch to START.

The engine cranks normally and the starter does not make unusual noises.

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.