Question about 1999 Chevrolet Blazer

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When i start the 1999 blazer the code p758 and code p1860 comes up and it wont shift gears it says shift circuit electrcal where do i look 4 the shift solenoid at?

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I have a 1998 chev blazer when I start and push on the gas it makes this high loud sound but once I hit30 its goes away i know its not the brake

Posted on May 20, 2014

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Shift solenoids are located inside the transmission and are serviced and replaced as part of the rebuild process.

I would recommend that one tries to look for another transmission that doesn't have this problem, or rebuild the transmission through a local transmission shop.

Posted on Sep 09, 2010

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2001 Chevy S10 4x4 4L60E transmission works perfectly until 50MPH then I lose 3rd and 4th gear, 1st, 2nd and reverse are normal. Never happenend before, been parked since. Fluid is clean. Any ideas?


Are there any DTC's - diagnostic trouble codes ?in the PCM / BCM ? You have third an fourth below 50 mph but above 50 it down shifts to 2nd gear ,is this what your saying or you don't have 3rd or 4th gears at all ? Which engine did yours come with ? 2.2 L or 4.3 L You trans can set several DTC'S an not all will turn on the check engine light .
DTC B2722 (4.3 L) DTC P0218 (2.2 L) DTC P0218 (4.3 L) DTC P0502 (2.2 L) DTC P0502 (4.3 L) DTC P0503 (2.2 L) DTC P0503 (4.3 L) DTC P0705 (2.2 L) DTC P0706 (4.3 L) DTC P0711 (2.2 L) DTC P0711 (4.3 L) DTC P0712 (2.2 L) DTC P0712 (4.3 L) DTC P0713 (2.2 L) DTC P0713 (4.3 L) DTC P0719 (2.2 L) DTC P0719 (4.3 L) DTC P0724 (2.2 L) DTC P0724 (4.3 L) DTC P0740 (2.2 L) DTC P0740 (4.3 L) DTC P0741 (4.3 L) DTC P0742 (2.2 L) DTC P0742 (4.3 L) DTC P0748 (2.2 L) DTC P0748 (4.3 L) DTC P0751 (2.2 L) DTC P0751 (4.3 L) DTC P0752 (4.3 L) DTC P0753 (2.2 L) DTC P0753 (4.3 L) DTC P0756 (2.2 L) DTC P0756 (4.3 L) DTC P0757 (4.3 L) DTC P0758 (2.2 L) DTC P0758 (4.3 L) DTC P0785 (2.2 L) DTC P0785 (4.3 L) DTC P1810 (2.2 L) DTC P1810 (4.3 L) DTC P1860 (2.2 L) DTC P1860 (4.3 L) DTC P1870 (2.2 L) DTC P1870 (4.3 L) DTC P1875 (4.3 L) .
Shift Pattern This category contains the following topics:
?€¢
One forward gear only


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Two forward gears only


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Gear missing or slipping


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No upshift or slipping upshift


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No downshifts


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Non-First gear start


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Refer to First Gear Range Only - No Upshift .


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Refer to Third Gear Only .


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Refer to Second/Third Gear Only or First/Fourth Gears Only .


?€¢
Refer to Slips in First Gear .


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Refer to Slipping or Harsh 1-2 Shift .


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Refer to No 2-3 Shift or 2-3 Shift Slips, Rough or Hunting .


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Refer to No 3-4 Shift, Slips or Rough 3-4 Shift .


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Refer to No Part Throttle or Delayed Downshifts .


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Refer to Second Gear Start .

Feb 18, 2016 | Cars & Trucks

1 Answer

P1860 engine code


What make , model an year truck ?

Sep 13, 2017 | Cars & Trucks

1 Answer

Automatic transmission wont shift 2001 saturn receiving codes P0753 P0758 & P1860


those are all codes for the shift solenoids in the transmission. very easy to get at.12_1_2012_10_36_37_pm.gif

Dec 01, 2012 | 2001 Saturn L-Series

1 Answer

1999 Chevy Malibu, not shifting right. It will drive and go in reverse but it will not upshift (or downshift) while driving. ATF and Filter are good. Also trying to manually shift doesnt work. Got a few...


code p 0753 refers to shift solenoid (SS) A ---electrical===causes --wiring ---shift solenoid ---ECM/TCM
code p 0758 refers to Shift solenoid (SS) B -- electrical===causes -- same as for p 0753
code p 0452 refers to evaporative emission (EVAP) pressure sensor---low input===causes wiring short to ground ---EVAP pressure sensor ---ECM
code p1860 refers to TCC / PWM solenoid circuit breaker
the first 2 are solenoid problems in the transmission
the p1860 is the torque converter clutch solenoid / servo code p 0113refers to intake air temp (IAT) sensor --circuit malfunction===causes--wiring open circuit/ short to positive ---wiring short to ground ---ground wire defective --IAT sensor ---ECM

Jul 20, 2017 | 1999 Chevrolet Malibu

1 Answer

OK i have seen my question asked several different times on here, and have seen several different answers, from a simple electrical problem to a complete transmission rebuild. 1997 Chevrolet S-10...


if you have a modulator valve on your tranny it may be bad,the vacum could be restricted on it,the mod. valve controls shifts smoothly.lucas trans. additive helps with stuck valves in trannys,

Aug 12, 2010 | 1997 Chevrolet Blazer

1 Answer

1997 transmission Slow Acceleration


not sure if this is the answer yet but i have the same problem with the same codes i work at an auto parts store and a few of the techs that are customers have lead me in the direction of changing the ignition switch, i am doing it today will let you know if it solves the problem

Jan 01, 2010 | 1997 GMC Jimmy

1 Answer

P0740, p0753, p0758, p0785, p1860 all of them lit up on me


PO740 IS TCC SOLENOID CIRCUIT MALFUNCTION CONDITIONS.CHECK TRANSMISSION FUSE - PO753 IS A/T 1-2 SHIFT SOLENOID CIRCUIT MALFUNCTION CONDITIONS.THE 1-2 SHIFT SOLENOID HAS FAILED - PO 758 IS A/T 2 -3 SHIFT SOLENOID CIRCUIT CONDITIONS. CHECK THE ERLS FUSE - PO1860 IS TCM PWM SOLENOID CIRCUIT MALFUNCTION CONDITIONS.CHECK TRANSMISSION FUSE+ IGNITION FUSE.

Aug 02, 2009 | 2002 Dodge Ram Maxi

1 Answer

1997 blazer sluggish in drive reverse is fine


P0740 is TCC circuit malfunction P0753 is shift solenoid A circuit electrical P0758 is shift solenoid B P1406 is EGR pintle position and P01860 is TCC circuit.

Feb 03, 2009 | 1997 Chevrolet Blazer

1 Answer

Shifting when warm


take your s-10 to a reputable trans' shop NOW!!
you have an internal problem,BUT if you'r lucky,it may just be the "range switch"on the side of the trans(hair dryer needed to heat the "goo"-sealer on the harness plug)

the trans' is in "limp(default)mode,just to keep you moving!!
driving it this way for a month WILL destroy the transmission!!

Dec 15, 2008 | 1999 Chevrolet Blazer

1 Answer

Trouble codes


You might want to check for a mouse nest under the Underhood fuse block, seen them chew up wiring under there many times.

Nov 04, 2008 | 2002 Chevrolet Silverado

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