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So I have a 1993 G20 5.7 V8 when I am driving on the highway when it changes to 3rd gear it is reving way higher than it used to and has a bit of a vibration on the stearing wheel any ideas what it might me I am wondering if I should replace the vss or the PCM from what I have reasherched so far or could it be much worse I am a poor snowboard teacher and try to do the work my self to save the bucks

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  • Cars & Trucks Master
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If you feel like the trans is slipping in third or overdrive, you'll need to get a pro to look at the trans. It could be a pressure problem or the clutches, or maybe a solenoid. A pressure problem would usually affect the other gears too.

Posted on Feb 15, 2014

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SOURCE: Front end vibrations at highway speeds

sounds like you may have unbalanced tires. take your vehicle to a tire shop and have them balanced

Posted on Dec 24, 2008

  • 1 Answer

SOURCE: transmission shifts hard down from highway gear only (D>3rd)

I had the same thing! It was a computer issue. It only cost me about $35.00.

Posted on Dec 29, 2008

polarcycle
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SOURCE: 1993 Jeep Grand Cherokee Laredo wont drive when put into gear

No, not with out a lot of work. Electronics are most likely different on the 2 also.

Posted on Mar 11, 2009

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SOURCE: Speedometer does not work changed the vss

Sounds as if the Head Unit is Faulty

Posted on Jul 12, 2009

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SOURCE: Driving my trailblazer I feel a vibration coming

Replace the right front wheel bearing

Posted on Oct 01, 2010

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1 Answer

What is D3 in autogear


it will be more noticeable at highway speeds if you use D3 as the transmission won't use the 4th and 5th gears. This will result in higher engine revving (watch the tach) and will use more gas. The car may feel like it's accelerating faster at these speeds, but at the same time, engine braking will slow it more when you take your foot off the gas.King Scanner G3 for Toyota Tis and Honda Him

D3 exists if you are going up (or down) a mountain and want the engine to be limited to 1st, 2nd, and 3rd gear rather than "searching" for the best of 3rd, 4th, and 5th frequently (although with the grade logic Honda employs this has never annoyed me). ymmv (your mountains may vary).

D3 Doesn't hurt anything; slightly more fuel consumption as the engine will rev higher, but better to be in "D" for normal driving and let the transmission use its full range of gears

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I have a 1995 camaro, should I drive it in overdrive or regular drive.


Overdrive will use more gas and put the car in a higher set of gears for more performance out of the transmission. Drive will just put the car in a regular set of gears for highway and road performance and save you a little bit of MPG, depending on whether you have a 3.4L V6, LT1, or a 5.7L V8 you'll notice a slight difference in power only out of the V6.

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BA Fairlane V8 - will not reach top 'gear' (Automatic) til 70kmh, so all city driving at 60kmh is done in 3rd. Can the computer be reset to reach 4th at 60 kmh ?


there may be a ecm flash that would enable you to lower the 4th gear lockup, but why would you want to do this? Unless you are driving on extended level surfaces the lower speed would 'lug' the engine (not good) and it would probably use more gas-the dealer may be able to do this, using a Tech II or similar device, don't know if they would though. Your overdrive gear is for highway speeds, not around town driving-it's actually better for your trans converter not to go into lockup at low speeds, and is probably suggested in your owners manual to put the selector in '3' for exclusive around-town driving.

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I drive a 2003 VW GTI. Theres a high rev sound after 3rd gear. Sounds like the engine is high reving and gets louder when the car gets faster even when shifting into a higher gear.


It needs rebuilding. The upper gear(s) are not locking in, so your likely wearing out your clutch when you drive fast. Get it rebuilt.

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Sounds like you may have smoked high gear clutches. Check your fluid and see if the color is darker than normal and smells burnt...

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Saturn says and I quote

there transmission fluid is not to be changed after the first change at 6000 miles.

Now I say it should be changed at every 30000 miles. If changing out the fluid doesn't work then you need to go to a transmission repair shop.

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Transmission wont shift into 3rd gear.


I had this exact problem on my 2005 5.3L Suburban... It would shift into 1 and 2 and reverse, but not 3 and 4.

I took it into a transmission shop, and he said the 3-4 shift solenoid was burned up. Wanted 1500 to fix it. Far from home, so I have to pay it.

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1993 mercury tracer


sounds like you have lost over drive. this means your transmission is begining to fail. next you will lose 3rd,or drive. when this happens it will only go to second gear. head strait fo a shop. only a matter of time for a rebuild. no quick fix. sorry,good luck.

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