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You are in the Chevrolet Silverado & GMC Sierra
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Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Silverado 2500, GMC Sierra 2500, Chevrolet Silverado 3500, GMC Sierra 3500, Truck
#65 of 403 2001 Silverado jerking at 45-50 mph
Jan 28, 2007 (7:03 pm)
Good evening, I just started to have a problem with my '01 Silverado, 6.0L V8, 2500, 4.10 rear. When I start out up a hill from a dead stop, the engine goes through its gears while accelerating normally.
But, when the speed levels out at 45-50 mph and the tach shows a drop to a lower gear (while still going uphill) the truck feels like it's jerking. As soon as I give it a little gas to get out of that gear, it goes away. Also, if I stomp on the gas to get into passing gear, it goes away.
A friend says two other chevy's he knows of had this same problem and it was the fuel filter under the driver's side of the truck. While I hope this is all it is, I also hope it is NOT a transmission problem, as I tow a 27' 5th wheel. Any suggestions?? Thank you very much.
#66 of 403 Re: 2001 Silverado jerking at 45-50 mph [shutterbug3]
Feb 01, 2007 (6:30 pm)
I forgot to add the fact that when the speed is between 45-50 mph, the tach is at 1500rpm. This is when it starts to jerk.
#67 of 403 Re: 2001 Silverado jerking at 45-50 mph [shutterbug3]
Mar 26, 2007 (5:24 am)
I have the same problem with my 99. Mine does it when I let off the throtle and get back on it. I think it is a transmition problem. Like you, if I step on it, it goes away. What I usually do is manually shift down a gear(automatic tranny) and the shutter goes away. We also tow a large travel trailer with ours. I've just gotten used to down shifting.....the tranny is too expensive to open up.
#68 of 403 Re: 2001 Silverado jerking at 45-50 mph [nelsonsrick]
Mar 26, 2007 (5:34 am)
I took the truck to the dealer. I had 1 TOTALLY fouled spark plug and 2 CRACKED plugs!!!! They also replace the wires. That did the trick. A week later, I traded in for a new 2007 3/4 ton Silverado. Have someone check your plugs and wires. I had 69,000 miles at the time.
#69 of 403 Re: 2001 Silverado jerking at 45-50 mph [shutterbug3]
Apr 01, 2007 (8:10 pm)
I was just about to tell you to check your plugs!!
I had a tranny service, and the guy told me it was an ignition problem. So today I did the wires and plugs....problem solved too!!
I also changed my fuel filter....I have 314,000 km
#70 of 403 2000 Silverado belt/pulley squeal.
Mar 14, 2007 (3:05 am)
#71 of 403 2000 Silverado belt/pulley squeal.
Feb 13, 2007 (4:58 pm)
2000 GMC Silverado extcb 4x4 5.3l 120,000km
I have had a major (super loud) howl/squeal coming from the belt area of my truck. It happens at idle and varies with throttle position. It used to only happen when it was cold back in November and then go away as the truck warmed up but now it is persistent every time I start it and doesn't go away. I don't know if it is "cold" dependent or if the problem has just finally come to a head as we haven't had a day over -10 for quite sometime for me to check to see if the sound goes away once it warms up.
I started it one cold morning and let it howl. I oulled off the splash gaurd and proceded to hit all the pulley bearings I could see with kroil to see if I could find the problem bearing or pulley. No dice, it didnt stop.
Its impossible to tell where the sound is coming from with the naked ear with all the noise of a running motor. I havent taken the belt off and run the truck for a bit to see if if that stops the noise.
The alternator went south on me about a month ago so I replaced it and the battery and belt. I figured I might as well when I was under the hood anyways. All is well with the charging system now, so I think this should eliminate the alternator and the belt from the equation.
I'm going to get a mechanics stethoscope and try to pinpoint the problem. What should I be listening for and where should I be listening with the probe of the stethoscope????
Waterpump/pulletys/AC pulleys etc...???
#72 of 403 Re: 2000 Silverado belt/pulley squeal. [gholde]
Mar 12, 2007 (7:21 pm)
My buddy has the same truck... 2000 gmc Z71 4x4 200 km. He has the same symptoms as your truck. I am sure that it is a noisy power steering pump. You can feel vibrating when running and touching the power steering pump cap. You can try to drain the oil with a turkey baster or large syringe and replace with a synthetic fluid and a additive.
#73 of 403 2000 Silverado belt/pulley squeal. by gholde
Mar 14, 2007 (3:05 am)
If the noise is coming from the belt friction. A simple test is to spray water on the belt while it is running. If the problem is belt friction, the noise will stop immediately!
#74 of 403 starting problem
Mar 10, 2007 (4:53 pm)