Question about 2004 Chevrolet Silverado

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Manual transmission Will not shift into 2nd gear without grinding the first time you try to get into gear.

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Check the magnet drain plug for metal bits. as there may be bearing failure. Check and replace the gear oil with the correct grade for your area. lastly the synchro spring ( bit that spins up the gear for mating speed may be worn or not have any tension left and so is not doing the job. Try slowing down the gear change action because if you are trying to do racing shifts and not depressing the clutch pedal enough then there will be problems.

Posted on Dec 25, 2013

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 1998 chevy k1500 4x4 4

first of all your truck is already in first gear when your going down the road....lol

Posted on Mar 06, 2009

csmock132
  • 4669 Answers

SOURCE: Transmission won't shift!

Does it just not shift up to 3rd or when it shifts to 3rd it is just like neutral?

Posted on Mar 06, 2009

csmock132
  • 4669 Answers

SOURCE: chevy transmission hangs in 2nd,

It just holds 2nd forever. Is the 1-2 shift point high?

Posted on Mar 24, 2009

  • 1 Answer

SOURCE: It's an automatic but it won't shift from 2nd to 3rd.

I would have to say it is the tranny check the fluid make sure it is clean and at the correct level

Posted on Apr 16, 2009

  • 151 Answers

SOURCE: 1995 Chevy 1500 Z71...transmission only shifts

It sounds like a vacumm modulator issue.

Posted on Apr 13, 2010

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1 Answer

Transmission making loud grinding/sucking sound, doesn't go when in drive or reverse


Is it an automatic John? When was the last time you checked the level of your ATF (automatic transmission fluid)?

There are many different types, so make sure you get the right one.

If it is a manual shift, check the gearbox oil level. If that is OK, you need a transmission specialist. Look in Yellow Pages.

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My '03 VW Jetta GLS 1.8T Manual Trans grinds when shifting into second gear?


the synchros are not DIY, when they start to go it will grind when the RPMs are higher like getting on a highway, you can try double clutching and see if that helps.

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Grinding gears when shifting


clutch may need adjusting

Sep 13, 2012 | 1985 Ford Econoline

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2005 mini cooper grinds when going into 2nd gear.


You will;; need to remove the transmission and replace the synchronizers.

Jun 17, 2012 | 2005 Mini Cooper

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My 1999 Chevy Silverado 1500 Z71 makes a clunking noise and feels like it got rear ended if I drive it for an hour or so non stop. It seems to be when it shifts from 1st to 2nd gear. I had the ******...


No one can tell you what it is.This is the operating characteristic of your transmission and customer do object to the noise or clunk and dealer discourage the repair. This is TSB 03-07-29-004G. Let me give you a partial copy. INFORMATION
Bulletin No.: 03-07-29-004G
Date: December 15, 2010
Subject: Manual Transmission Operating Characteristics
Cold Operation
Manual transmission operation will be affected by temperature because the transmission fluid will be thicker when cold. The thicker fluid will increase the amount of force needed to shift the transmission when cold. The likelihood of gear clash will also increase due to the greater time needed for the synchronizer assembly to perform its function. Therefore when the transmission is cold, or before it has reached operating temperature, quick, hard shifts should be avoided to prevent damage to the transmission.
Backlash
Backlash noise is created when changing engine or driveline loading. This can occur when accelerating from a stop, coming to a stop, or applying and releasing the throttle (loading and unloading the driveline). This will vary based on vehicle type, build variations, driver input, vehicle loading, etc. and is created from the necessary clearance between all of the mating gears in the transmission, axle(s) and transfer case (if equipped).
Shift Effort
Shift effort will vary among different style transmissions and synchronizer designs. Usually the more heavy duty the transmission, the higher the shift effort because of the increased mass of the components. Shift effort can also be higher in cold weather because the fluid will be thicker. Medium duty transmissions will not shift as quickly as a Corvette transmission. To reduce shift effort, do not attempt to rush the shift - allow the synchronizers to work as designed. Shifting harder will only increase the chance of rushing past the synchronizer leading to grinding while shifting.
Non-Synchronized Gears
Some light duty truck transmissions in 1st gear (creeper-gear) and reverse gears in various transmissions, along with all gears in some medium duty transmissions, may be non-synchronized. This means there is not a mechanism to match input and output shaft speeds to allow for a smooth shift. This function is left up to the driver. This can be noticed if a shift into 1st or reverse is attempted while the vehicle is rolling or before the input shaft stops rotating leading to a gear grind. The grinding can be reduced by coming to a complete stop and pausing for a moment before shifting into the 1st or reverse gear. Some slight grinding can be expected. In medium duty non-synchronized transmissions, the driver must match input shaft (engine) speed to output shaft (driveshaft) speed with every shift. This can be accomplished by double clutching, or by using other methods. If the driver is not able to perform this function properly, there will be gear grinding with each improperly completed shift. Driver training may be required to correct this condition. Clutch brakes are used in medium duty non-synchronized transmissions to allow a shift into gear at a stop. The clutch brake is used to stop the input shaft from spinning, allowing a shift into gear at a stop without grinding. The clutch brake is activated by pressing the clutch pedal all the way to the floor. When the clutch brake is used, it is possible to have a blocked shift with the vehicle stationary. If this occurs, engage the clutch slightly to rotate the input gear to allow the shift. The clutch brake is intended to only be used while at a stop. Care must be taken to not activate the clutch brake while shifting between gears. This could lead to excessive grinding or a blocked or missed shift.

Aug 29, 2011 | Chevrolet Silverado 1500 Cars & Trucks

2 Answers

I bought a 1995 Nissan 240sx s14 a month ago.(146K milage). It has a manual transmission. It didnt have any problems when i bought it. But right now when i try to up-shift from 1st gear to 2nd gear or 2nd...


The vehicle appears to be suffering from "Clutch Drag". This is often caused by insufficient disengagement of the clutch pack components. On the Manual transmission I would expect 1/4 to 3/8 inches of "Free Play" at the clutch pedal. The distance between the rest position, and when depressed the point of first resistance. Anything in excess of this, requires adjustment to the Pedal stroke linkage, to obtain that measurement.
If this cannot be achieved then, the only alternative is to replace the Clutch Pack and Flywheel Pilot Bearing. At the same time. As the vehicle has covered 140k miles, without positive service records, a Transmission OIl change would be in order too.
Regards,David

Nov 29, 2010 | 1995 Nissan 240SX

1 Answer

91 mazda protege, grinding lower gears?


More than likely the synchronizers are going out,they allow you to move from gear to gear without damaging transmission.

Apr 20, 2009 | 1991 Mazda Protege

1 Answer

2nd gear crunch


first of all you shouldn't be reving that high to change gears. that's too high. secondly if it's grinding only during the change from 1st to 2nd gear you may have a problem with the gears not being aligned anymore...ie synchronizers worn out, bearings worn out, etc. take to reputable transmission shop to get it diagnosed and repaired. it sounds like the synchronizers are a problem there. and you may have metal in your fluid now that it's been grinding which will affect the rest of the transmission. if you are speed shifting as in racing, you are not doing your transmission any good. you probably don't have a transmission built to do that if it's the original factory tranny... meaning you did a major NO NO to your tranny and are tearing it up speed shifting when it isn't built for racing.

Oct 13, 2008 | Hyundai Motor 1996 Elantra

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