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GM trouble code p1807

Shifts hard after going 70mph

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6ya6ya
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Posted on Jan 02, 2017

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REDOIL
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SOURCE: my 98 legacy outback has a trouble code p1807, i

well i looked up on at my shop and that code dose not exist what i would do erase code and see if it come back hope this helps

Posted on Sep 30, 2009

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ftw1952
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SOURCE: gm 700r shifting 1 to 2 hard, adg tv cable gov,

What year it?

Posted on Oct 02, 2011

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1 Answer

Speedometer and rpm gauge not working and the car shifts just fine


You will need to pull your instrument cluster and have it repaired. Kind of common problem on GM vehicles of that era. There are plenty of places that repair and rebuild clusters, Ive even seen them on e bay .

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Cruise Control drops out andTransmission shifts hard in all gears


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My 2005 siverado z71 has an ABS light that comes on when you hi a big bump, it also kicks off the cruise control but if you hit the resume it goes back to the correct speed. Also I occasionally get a...


Have a factory or professional scanner hooked up , check for DTC'S - diagnostic trouble code's .GM had problem with stepper motors in side the instrument cluster ,model years 2003 to 2006 . Stepper motor's control the gauge needles .
How to repair GM Instrument Cluster Speedometer Gauge Stepper

The ABS an service brake message or probably related , have it checked for code's !

Jan 05, 2018 | 2005 Chevrolet Silverado

1 Answer

I have a 1993 chevy blazer and it shifts hard in every gear.I think it mihgt be vacume but not shur.please help


Not vacumm controlled anymore.Hard shifts are caused by high line pressure. you may have a trouble code stored in the computer and transmissions code back then did not always turn the check engine light on.A stored code will trigger high line pressure.You could have a bad force motor and this was common for 93 and 94, infact gm changed the solenoid and you will need to buy the late design if needed.I would start by having a shop pull the codes.

Feb 28, 2011 | 1993 Chevrolet S-10 Blazer

1 Answer

CAR RUNS FINE BUT WHEN I DRIVE FASTER THEN 70 MPH THE CHECK TRANSNISSION LIGHT TURNS ON THE TRANS HAS A BANGING SOUND. IT GIVES A INCORRECT GEAR CODE. PLZ HELP


Don't drive faster than 70Mph! That is over 115 feet per second! Anyway, it's 4WD, correct? Check the fluids in the tranmission and transfer case. You transmission may need to be serviced. Limit your speed to 50-60 MPH and don't shift hard...with a lot of RPM's, when taking off and going through 1st 2nd and 3rd. Drive gently until you can have the transmission serviced.

Jan 22, 2011 | 2002 Isuzu Rodeo

1 Answer

I installed a remanufactured transmission from gm. I also installed a shift indicator. My truck will not go into gear when I shift it into drive.


make sure the the adjustment for the shifter linkage is adjusted properly. if your stll having troubles, take it to your local GM service department and have inspected. If there is a internal problem with the transmssion they can fix or replaced it under the GM parts warranty the transmission comes with.

Dec 16, 2009 | 2001 Chevrolet Silverado 1500

1 Answer

Stalls out intermittently at high speed Even if travelling at 70mph the car will stall and i have to shift to neutral and start it up again..


have the electronic engine control system trouble codes checked, bet u will have a trouble code for a crankshaft postion sensor. Kragen and Autozone (and others like them) do this for free except in california here the courts don't like parts tech's diagnosing cars, so an injunction was issued to cease and desist..

Nov 21, 2009 | 2001 Cadillac DeVille

1 Answer

My 98 legacy outback has a trouble code p1807, i have haynes book for the car but the code is not listed pleas help


well i looked up on at my shop and that code dose not exist what i would do erase code and see if it come back hope this helps

Sep 30, 2009 | 1998 Subaru Legacy

2 Answers

Speedometer quit working and now transmission won't shift right


have u run a trouble code test on the computer control unit? most likely u will find thatthe vehicle speed sensor has failed, it is on the outside of the trans. here is how u run a trouble code test, go to the link for instructions.
http://check-engine-light-codes.blogspot.com/2006/03/gm-1983-95-vehicles-obd1-codes-self.html

Sep 13, 2009 | 1994 Oldsmobile Cutlass Ciera

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