Why does the serpentine belt make a squeaking noise?
Why does the serpentine belt make a squeaking noise?
Some customers may comment on an accessory drive belt / serpentine belt chirp, squeal or squeak noise from the engine compartment at idle or while driving. This condition may be caused by a misaligned pulley and/or the accessory drive belt creating the noise. Notice: Do not use belt dressing or silicone on the drive belt.
Why is my drive belt making a noise?
Belt dressing may cause the composition of the drive belt to break down. Failure to follow this recommendation will damage the drive belt. Several aftermarket companies offer laser alignment tools for accessory drive systems that can be very helpful in eliminating drive belt noise as a result of misaligned pulleys.
Why does my Gatorback belt squeak when the engine is cold?
Shortly after, the belt started to squeak when the engine was cold, and it was a bit worse if there was moisture in the air. I put a new gatorback belt on and the problem went away for a few months.
When does the belt squeak on a Silverado?
Motodeficient wrote: I’ve got an 09 Silverado 4.3 with just over 30k on the clock. I got it last November. Shortly after, the belt started to squeak when the engine was cold, and it was a bit worse if there was moisture in the air. I put a new gatorback belt on and the problem went away for a few months.
Can a faulty knock sensor cause a 4.8L Vortec to go bad?
On the 4.8 Vortec, the knock sensor is known to go bad or become faulty and throw check engine lights. When you have a faulty knock sensor, the engine thinks it needs to alter timing despite there being no timing issues, which can lead to a number of performance issues. 4.8L Vortec Faulty Knock Sensor Symptoms
Are there any problems with the Vortec 8.1?
On the Vortec 8.1, the crankshaft position sensor is known to go bad or become faulty. This issue was most prevalent in 2003 and prior vehicles, after which the issue was fixed by GM. A bad sensor is somewhat easy to diagnose as you will get a CEL for it and you’re likely not going to be able to drive your truck.
What causes the idler pulley to make a noise?
This noise is typically caused by a mechanical problem, either a worn auto-tensioner or idler pulley. The Vortec 4.8, 5.3, and 6.0 liter engines have a main accessory drive belt for the water pump, power steering, and alternator. The main belt has a GM auto-tensioner…
Why does my 4.8L Vortec make a ping noise?
If you ever hear a “knock” or “ping” noise on your 4.8 vortec, it’s likely engine knock which is caused by pre-detonation. Fuel burns in pockets, almost like a row of fireworks.
