GMC Jimmy 2003 Owner's Manual
![GMC Jimmy 2003 manual cover](/images/qFOxpzNHUuKTqaFpGpJSmaAO/thumbs/thumb175x175.webp)
To replace the headlight bulb, open the hood and locate the back of the headlight assembly. Disconnect the electrical connector from the bulb, remove the retaining clip, and gently pull out the old bulb. Insert the new bulb, secure it with the retaining clip, and reconnect the electrical connector.
The recommended oil for a 2003 GMC Jimmy is 5W-30. It is important to use oil that meets GM's specifications. Check your owner's manual for more details.
If the ABS light is on, check the ABS fuse and inspect the wheel speed sensors for dirt or damage. Use an OBD-II scanner to read any trouble codes for further diagnosis.
The recommended tire pressure for a 2003 GMC Jimmy is typically 30 PSI for both front and rear tires. Refer to the sticker inside the driver's door for exact specifications.
To reset the 'Check Engine' light, use an OBD-II scanner to clear the code. If you don’t have a scanner, disconnect the battery for 15 minutes, then reconnect it. Note that this may also reset other electronic settings.
To change the transmission fluid, first lift the vehicle safely. Remove the transmission pan bolts and drain the old fluid. Replace the filter, clean the pan, and reinstall it with a new gasket. Refill with the appropriate transmission fluid.
Possible causes for overheating include a faulty thermostat, low coolant levels, a leaking radiator, or a failing water pump. Check these components and ensure the cooling system is functioning properly.
To replace the serpentine belt, locate the belt tensioner and use a wrench to rotate it, releasing tension on the belt. Remove the old belt and install the new one, following the belt routing diagram found in the engine bay.
Symptoms of a failing fuel pump include difficulty starting the engine, sputtering at high speeds, loss of power during acceleration, and a whining noise from the fuel tank area.
To check the brake fluid level, locate the brake fluid reservoir under the hood. Ensure the vehicle is on a level surface, and check that the fluid level is between the "MIN" and "MAX" marks on the reservoir.