FAQs—GMC Savana 1500
My GMC Savana 1500 takes a lot of brunt everyday as I load it with heavy cargos. How can I make sure it keeps good performance and safe travels?
Savana is great for commercial use. The size of its cargo area is its biggest asset, but it can also be the cause for the vehicle to pose danger. How? When weight is beyond payload and if improperly distributed, the engine, the stability, and the braking performance will all suffer.
Weight, for instance, is directly associated with speed and power. Subsequently, the engine has to work harder when loaded with heavy cargo, especially when climbing slopes. Stability is also put in jeopardy when going through corners and curves. In just one wrong turn, your van can roll-over and endanger everything inside it and everyone in the area. Weight also puts heavy burden on the performance of the brakes, allowing them to exert more effort and increasing the possibility for these parts to fail. Nonetheless, safety and performance can both be kept by means of spreading the weight of the cargo evenly across the vehicle.
I'm hearing a lot of hammering from under my hood, and I think it's coming from the engine. What could be causing it?
Hammering noise characterizes an engine problem known as rod knock. This happens when the engine bearing of your GMC Savana 1500 is already worn or damaged. If the bearings finally fail, it will seize either the engine or the rod. It may also lock up the engine or break the rod. On both situations, the engine will suffer major damage and require you a costly repair or replacement.
High-mileage engines of heavily loaded cargo vans are more vulnerable to rod knock. The cause can be traced back to oil and oil-dependent engine parts. Oil can be dirty or does not have the right viscosity. It can also be due to oil breakdown, not enough oil pressure, or unhealthy oil filter. Other reasons can be as bad as worn rings and cylinders, bearing misassembly, or improperly or broken connecting rod bolts. But with proper maintenance done on strict schedule, your engine will be saved from suffering major damage.
Aside from using the right antifreeze for my coolant, what do I need to make sure that the coolaing system doesn't fail the engine?
So you are already using the right antifreeze. Have you made sure the coolant is of enough amounts? This is very vital since the fluid is where the engine trusts its safety against the excessive temperature that is produced during the combustion process. Check the fluid level both in the reserve tank and the radiator itself, and then add as necessary.
Another reason why the cooling system fails is the dirt that clogs the radiator. Remember that bringing back the capability of the coolant in absorbing high temperature basically depends on the air that the radiator sucks in. However, unwanted dirt, insects, and even leaves can still make their way to the radiator. They affect the radiator fins, and prevent air flow as they accumulate. The problem can be prevented by cleaning the fins and the external part of the radiator after every 12 months. Also, don't forget to flush the radiator on regular interval.