Question about 1993 GMC Yukon

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I have a 93 GMC Yukon and when i get on the highway i can be in third or fourth gear and my transmission will just drop back into first gear i can kill it for a minute start it back and its fine whats the deal

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CHECK THE SENORS TO IT IT HAS TWO OF THEM

Posted on Mar 12, 2011

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My 2005 Pontiac Bonneville GXP will not shift into 4th gear I was to it was a fourth gear band but is that the only problem that will cause itI'notto shift into 4th gear


Which transmission does yours have 4T65-E or 4T80-E ?

4T80-E
No Fourth Gear

Checks

Causes

1-2 Shift Solenoid Valve
?€¢
Inoperative
?€¢
Debris
?€¢
Pinched wires

3-4 Shift Valve Bore Plug

Misassembled

4th Band

Burned, slipping, missing

4th Servo Cover

Cracked

4th Servo Pin

Broken, seized

4th Servo Piston

Damaged

4th Servo Seals

Rolled, cut or damaged
4T65-E
Slipping or No Fourth Gear
Slipping or No Fourth Gear Checks
Cause

DEFINITION: A large engine RPM increase is noted in fourth gear, Drive range, with little or no vehicle forward speed increase. First, second, and third gear operation are normal. Shifts into fourth gear are soft or do not occur. Fourth gear ratio is 0.705:1.

Automatic Transmission Fluid Level
Low fluid level

Transmission Main Line Pressure
Low transmission main line pressure

Oil Filter Assembly
• The oil filter assembly (100) is missing, plugged, or damaged.
• The oil filter seal assembly (101) is missing or is damaged.

Control Valve Body Assembly
• The 3-4 shift valve (362) or the 4-3 manual downshift valve (360) is stuck or binding.
• Debris is found in the passages of the control valve body (301) or of the control valve body spacer plate and gasket assembly (396)

Case Cover Assembly
Distortion or damage occurs at the manual valve (404) or at the case cover (401), causing PRN oil leak.

Driven Sprocket Support Assembly
A plugged third clutch oil passage in the driven sprocket support assembly (609)

Fourth Clutch Assembly
• The clutch plates (500-502) are worn, damaged, or misassembled.
• A missing or not seated fourth clutch spring retaining ring (601)
• A damaged spring assembly (602) or piston (603)
• Worn or damaged fourth clutch piston seals (604, 605)

Third Clutch Sprag Assembly
• The sprag (720) was misassembled or backwards on the inner race (661).
• A damaged third clutch sprag assembly (653, 661, 719-721)

Dec 06, 2015 | Pontiac Cars & Trucks

1 Answer

How do I fix automatic transmition in 2002 GMC ENVOY 4x4 shifts hard into third will not shift into overdrive already replaced the two solenoids in front before it would not shift to third


How To Rebuild A 4L60E Automatic Transmission - YouTube

? 13:19
https://www.youtube.com/watch?v=JpmJtuVrdWk
Mar 16, 2011 - Uploaded by Nick Stageberg
How To Rebuild A 4L60E Automatic Transmission ... Also here is a link to some common break/fixes that may require a rebuild:... GMC canyon, envoy, safari savana, sierra Sonoma, Yukon, ....Great video, my 96 sierra 4x4 when shifting into high gear motor races as if nothing is there........................always ...

30 Common 4L60E Transmission Problems & Repair ...

www.twincharlotte.com/transmission-repair.../30-Common-4L60E-Trans...
Mar 18, 2011 - The 4L60-E is an automatic shift, four-speed overdrive, longitudinally...... 4l60e 2002 gmc 4x4 was not driven for 1 year,will not shift into 3rd or ... I have a 2005 GMC envoy 4x4 6 Cylinder I assume it is a 460LE Transmission.

Nov 24, 2015 | GMC Cars & Trucks

1 Answer

My 1999 gmc yukon was running fine then all of sudden wont go into gear at all if you accelerate it justs revs up and wont go


It's an obvious transmission problem, If you throttle down and it Does NOT move that's the problem

Apr 19, 2013 | 1999 GMC Yukon

1 Answer

I got a 1999 gmc yukon. The transmission is hanging up in third gear and wont downshift. What could be wrong with it. It has two new selinoids in it...


VSS,On the transmission at the tail shaft is the vehicle speed sensor this sensor tends to get contaminated and give wrond sppe signal and thus wrong gear engaement

Nov 05, 2012 | 1999 GMC Yukon

1 Answer

When my 2001 GMC Yukon tries to shift into 3rd gear or overdrive - it is like it goes into nutral. It never shifts to 3rd. 1st and 2nd gears does just fine.


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.

Sep 27, 2010 | 2001 GMC Yukon

2 Answers

2003 honda civic you drive on the street with D or


Drive the vehicle in "D". The D selection is the overdrive. You can consider the overdrive as a fourth gear. The D3 is simply third gear, and if driven in D3, the transmission will never shift into overdrive when needed.

Apr 02, 2010 | 2003 Honda Civic

1 Answer

My Yukon has 226,000 mostly highway miles on it.


hate to say it but your tranny is shot..this is a common transmission,check your local junk yard for a good used one..

Dec 12, 2009 | 1999 GMC Yukon

3 Answers

Will a stock transmission fit on a 305 small block engine?


Not a stock 1991 GMC Sonoma transmission. They're made to fit a V6, not a V8.
(With a 4.3Liter V6 engine)

Sep 01, 2009 | 1991 GMC Sonoma

1 Answer

2001 Yukon XL SLT 4 speed Auto Transmission shift problem!


Sam,

I would start with a transmission fliud and filter service.

I would then have the trasnmission checked out by a transmission shop. The transmission most of the time has the direct drum band is starting to go. The shops can rebuild it no problem, This is a very common failure wiith the trasnmission.

Good Luck

Aug 16, 2009 | 2002 GMC Sierra 1500

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