Question about 1999 Chevrolet Silverado 1500

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1999 silverado shift solenoids were replace and

1999 Silverado 2WD 4,3 V6 transmission problems only second and third gears are working codes say shift solenoids,even after replace every one and clear the code didn't fix anything please HELP!!!
Luis Alonso (919)455-1681 luis_cj98@yahoo.com at any hour...

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  • luis_cj98 Sep 24, 2009

    No towing at all,fluid is in perfect condition,no loosing connections,162,250 miles never have a problem with it before what else should I change that involve to keep coming with code for shift solenoid and the same failure like I say before only second and third gears are working and reverse,park and neutral still good thanks for your help

  • luis_cj98 Sep 24, 2009

    where the speed sensor is located on same silverado 1999

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THe shift solenoids are only part of the shifting system, you still have to have proper pressure and flow. The pump could be failing also. Your ECM controls the the shifting of the trans. SO even if the soleniods are replaced thats not guranteed it will fix the problem if they are not actuating properly. How many miles, hows the fluid, has the truck been worked hard (large trailer towing)? I would start by making sure the speed sensor is working and check the wiring harness to the trans for any loose connections.

Posted on Sep 24, 2009

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Is there anyway you can pull a code? Because it can be solenoid related,for this type of transmission the speed sensor (VSS) is prone to do this,also how is the transmission fluid is it brownish or dark dark burnt , because if it is its a mechanical failure.I can pull a code if in T.O

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1st and 3rd gear only sounds like a broken sun shell he should feel bad... The only real issue on those 96 97 transmissions is the solenoid resistance values so swap ur solenoids with the one u want to put in and it will work fine if u do ur home work first.. U got to know why they wont work thats how u find cheats... But first and third sounds like a stripped or sheared shell...was reverse gone to

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Has the Powertrain Control Module (PCM) been tested for fault codes? if not get this done firs. This transmissions shifting is controlled by a computer via electric shift solenoids inside the transmission pan mounted to the valve body.

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Are you sure its stuck in first gear, Its probably in second.. It sounds like a stuck or open shift solenoid in the tranny (4L60E hydra-matic). Depending on the year and type of tranny this was a default setting to either only second or only third gear, should some electrical or transmission hydraulic fault occur. Another common problem for that year is a faulty ignition switch at the key cylinder. It will fail and not send power to the tranny (thus not powering up the shift solenoids). The default (or limp home mode) is when both solenoids are commanded off. They will be both commanded off in second gear (even when the tranny is operating normally).

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1 Answer

My transmission slips going through second gear if i get my foot in it just a little bit, and it doesnt always go into reverse. if i shift into reverse and it doesnt shift, i have to shift to neutral then...


this problem is a common failure associated with your shift solenoinds inside your tranny. of course a shop is not gonna tell you this because by the time you wanna get it repaired it is usually too late and have already cause damage to your clutch pack and internal parts, thats the main reason why a shop wont mess with just replacing your shift solenoid (aka valve bodie)

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1 Answer

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Feb 22, 2009 | 1999 Chevrolet Silverado 1500

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have the shift solenoid checked out to see if its faulty.

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