Question about 1995 GMC Sierra C1500

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1995 chevy pickup ext.cab with 5.7 v8. Get into truck start it up,the tach.and speedometer and gear shift indicator guages will not move and gear shift indicator light will not light up. I put the truck in drive, the truck will go but will not shift to higher gear.Yet sometimes I will turn off the truck and wait a few minutes and start it up and everything is fine,tach and speed.and indicator are fine and the trans will shift but the trand shift from 1st to 2nd is hard but from 2nd to 3rd is smooth and to overdrive is smooth. I started the first time in the winter and it was everyday and only twice in the summer. I live in Michigan

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Juble

  • 37 Answers

SOURCE: 95 GMC Sierra 4L60E will not shift down to 1st or up to 4th.

no power stuck in 3rd gear electric shop unless youve burnt it up good luck...www.TransmissionGarage.com

Posted on Dec 30, 2009

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george may

  • 31 Answers

SOURCE: my 2003 gmc sierra 1500

could be the switch on the trans or the pump may have went out, or something is wrong with the valve body inside the trans

Posted on Sep 02, 2010

Molson02536

Harvey N Tawatao

  • 3854 Answers

SOURCE: transmision starts out in 1st

Sounds like your transmission is in limp mode. This is a fault mode in which the transmission either loses electrical power or the PCM deactivates all of the electronics. The transmission will default to max line pressure. The driver will have Reverse and 3rd, with manual 2nd available by putting the gearshift in 2 or 1 (doesn't matter). 1st, 4th, and TCC lockup will not be available. It will not hurt the car to drive it like this for short periods, but use manual 2nd to get the car moving, and be aware that the trans will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear.

The other from what you described, trans shifts 2nd to 3rd by itself in D or OD and locks the converter : ShiftA solenoid failed. Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.

Thank you for using fixya and have your Safari scanned for the DTC codes that would indicate what issues your transmission is having to put you in to limp mode.

Posted on Sep 21, 2010

bronci2

  • 64 Answers

SOURCE: When my 2001 GMC Yukon

this sounds like the pressure valve is going bad on third gear. cheap fix try Lucus transmission additive to increase the pressure.
To do it right go to a good transmission shop an have it serviced and flushed.

Posted on Sep 27, 2010

joey themo

  • 1 Answer

SOURCE: 2000 GMC Jimmy 4x4 Switch not working and Shifting hard between 1st and 2nd

Change the switch itself if it drives normal then randomally kicks into 4 lo/4 hi i had the same problem and a transmission shop told me it was the vaccum and the transfer case but one of my mechanic friends told me that it was my switch and shops only tell you other things for the money. Try changing the switch.

Posted on Aug 17, 2012

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