Why would my rpms run real high only when driveing

30

Asked by Jun 18, 2015 at 12:51 PM about the 1999 Chevrolet Silverado 1500

Question type: Maintenance & Repair

No matter what gear it's in rpms
staying right around 5000-6000

13 Answers

52,135

Transmission / clutch slipping. If it is a 4X4 maybe it is low range.

1 of 1 people found this helpful.
30

It's an automatic trans

100,485

With those RPM's it won't last long. Does it sound like it is revving that high or is the tach just stuck? Does it idle normally?

2 of 2 people found this helpful.
30

It idles fine and seems to be shifting fine just screams when u get on gas

1 of 1 people found this helpful.

Bob is right, but does it sound like it's really running that fast..or maybe tachometer is faulty? I looked at a forum and they say 6k is red-line. Going to red-line to shift is fine but cruising with it running that fast is not good

I type so slow your guy's posts were not there I was off looking for what red-line is on that truck

30

It definitely not a faulty tach it's running high as I said it automatic trans not sure if that makes a difference

52,135

Is it a 4 wheel drive? If so it may be stuck in low range.

30

It's not 4x4 beginning to think trans is just about shot not sure how one can go so quick one day running fine next day bam lol

19,295

Please don't run your engine like that long. Sounds like the trans is toast. It could be stuck in 1st gear which could indicate a tps or vss problem

1 of 1 people found this helpful.
30

Ya I thought maybe tps too I'm not sure what vss stands for but at this point think best thing to do is let my mechanic take a look

52,135

VSS=Vehicle Speed Sensor

1 of 1 people found this helpful.
30

Thanks bob and rest u guys ur suggestions gave some good place to start looking but nothing I checked or changed worked I'm good at fixing things but am no mechanic

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