2003 Pontiac Grand Am Logo
Salomon Cordova Posted on Dec 25, 2013
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Replaced head gasket on 2003 grand am,right after when shifting from neutral to drive or reverse it clanks and jerks and little rough shifting into 2nd when moving, replaced motor mounts and didn't h

After replacing head gasket it clanks and jerks when shifting fr:neutral to drive or reverse,replaced motor mounts still does it

  • john dawkins
    john dawkins Nov 12, 2017

    Hi, my brother is having the same issue on a 2001 alero. replaced the top end gaskets and after, had a clunking when shifting from park into drive or reverse. Did you happen to ever get this issue resolved? If so, could you assist me?

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John Ware

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  • Expert 145 Answers
  • Posted on Dec 25, 2013
John Ware
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Sounds like bad trans mount,

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Anonymous

  • 106 Answers
  • Posted on Mar 24, 2009

SOURCE: 2001 Pontiac Grand Am Rough Idle In Drive Only

has it had a tune up?

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Mike LaPres

  • 757 Answers
  • Posted on Feb 27, 2010

SOURCE: replace thermostat on 2003 grand prix gtp with

The thermostat housing is located in the upper radiator hose. You will see a metal elbow secured by two bolts into what I remember is the upper intake manifold...don't quote me on that but you will see it regardless of whatever I call it. Anyways, GM decided it was a good idea to put stainless steel bolts in there but that makes it easy to strip the threads in the bolt hole so I think it's best when you put your wrench on the bolt to just tap on the handle till you vibrate it loose, then turn it.
When you pull off the housing you'll lose a little coolant and it will create an air pocket which we'll address. It's a 50/50 chance that the thermostat housing gasket will either stick to the housing or the engine...it may be torn, cracked or flaking in either case clean both contact surfaces before you replace the gasket. I recommend an oil impregnated poly material gasket.
Note the position of the thermostat in the hole and place the new one in as such.
I recommend a 180 degree thermostat...stock is 195 but the GTP runs better with the 180.
Put on gasket and reinstall the hose/housing assembly, alternate from one bolt to the other so the housing mates flat and cannot cause a leak.
Next, fill the coolant overflow bottle to the "HOT" mark. If the bottle is dirty and hard to see just put a light on top of the bottle...GM didn't mark it very well so if it's not squeaky clean you can hardly see a damn thing.
*IMPORTANT** if your car still has Dexcool in it, DUMP IT. It will eventually destroy the motor.
If not...continue on. Start the car. Go back to the thermostat housing and place a rag on top of, and twist the peacock valve on top of it to let the air out until it starts to get coolant on the rag. Done.

Anonymous

  • 4 Answers
  • Posted on Nov 19, 2012

SOURCE: Everytime I put my car i park it goes into reverse.

Ive been having the same problem with my Ford Taurus, its probably the parking gear is broken

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1990 Suzuki Escudo 4 wheel drive

As far as I know the procedure should go something like this...

Stop the vehicle, engage the parking brake and if applicable, get out and turn the hubs on the front wheels from Free, to Lock.(You may not have these on a Suzuki, they may be auto-lockers)

Get back in the vehicle and put the transmission shift selector into Neutral.

If you have a manual transfer case, move the selector-shaft to 4x4-High, or 4x4-Low -- whichever is desired. Now, putting the vehicle in gear with the transfer case is sometimes somewhat difficult. As long as the vehicle's transmission is in neutral, don't worry, the gears inside the transfer case are big and beefy -- Don't be afraid to be rough -- Again as long as the transmission is in neutral. You may also have to disengage the parking brake and slightly let the vehicle roll forward or back with your foot-brake to get the Transfer case to lock into place.

Once 4x4 of the selected High, Or Low range is selected, usually indicated by the vehicle jerking slightly with a slightly loud clank/thud. Move the Transmission selector out of neutral into your desired gear (Drive if Automatic, if Manual, whichever gear you pull out from). and voila! You should now be in 4-Wheel-Drive.

To disengage 4-Wheel-Drive. Just reverse the steps.
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