FAQs—GMC 1000 Series
What are the common problems usually encountered by owners of the GMC 1000 Series?
Them GMC 1000 Series' transmission is designed to be heavy duty and powerful. However, it is still not free from some faults and lapses. A GMC 1000 Series owner may encounter electrical problems in the transmission. The electrical system is complex is composed of multiple electrical solenoids and sensors as well an intricate wire harness. Excessive heat and vibration can sometimes cause these electrical components to go short and fail. When the truck is often used for heavy hauling and towing, the transmission can also become more prone to overheating and damage. Therefore do exceed the set cargo limit of the truck to avoid the gearbox and clutches from becoming strained. To make the transmission system last longer, following the regular maintenance schedule is in order. Always inspect the quality of the transmission fluid and replace when found to be contaminated. Installing a deep pan or using an aftermarket transmission cooler will help keep the transmission from overheating.
My GMC 1000 Series truck has been a dependable partner for my business for years now. My question is, how do I know if its time to change the belts and hoses?
Ideally, the hoses and belts should be changed every 35,000 to 60,000 miles that should take around 3-5 years. However, if you notice that the truck is emitting more exhaust than usual or that it is starting to shake and vibrate, then it's time to take the truck to a mechanic and have the belts checked. Examine the timing belts and fan belts. Do not allow it to reach the point when the belt breaks. This will cause the truck to breakdown and unable to even start. A timing belt break could also affect other engine parts and cause valve damage. Once you replace the timing belt, then also consider replacing other usually affected parts such as the water pump, belt tensioner, thermostat, and camshaft seals.
How often do I need to change my GMC 1000's spark plugs and how do I keep it in good condition?
Servicing the spark plus is an easy thing to do, even at your own garage. However, before you start operating on the engine, please refer to your truck's engine manual. Turn off the engine and use safety rubber gloves before proceeding. The recommended replacement interval for your truck's spark plugs is indicated in the manual. In general, the recommended interval is every 30,000 miles. However, there are a few telltale signs that indicate if the time is up for the spark plugs. High gas consumption is usually an indicator that the spark plugs might already be corroded or worn. Engine misfiring, difficulty starting, lack of acceleration, and a rough idle are common signs. Like the oil filters and tires, spark plugs would need regular replacement. A helpful way to make it last longer is examine them every month. Clean them using a rag and a carburetor/injector cleaner. You can also use pressurized air and a wire brush for this task. Make sure you reinstall them properly with the correct torque.