94 chevy 3500 w/ 265,000 miles wont shift

DaveF · 08-16-2008, 03:03 PM

I have a 94 chevy 3500 2 wheel drive with 265,000 miles and it only has 2nd and 3rd gear. It starts off the line in 2nd and shifts to 3rd but won't go into overdrive. What might be the problem? Trans was last serviced around 257,000 miles.

junior3382 · 08-16-2008, 03:05 PM

it has 265,000 miles. Simple. LOL Welcome to the site, just curious, when was the last time you had the tranny serviced? Fluid changed, new filter etc?

DaveF · 08-16-2008, 03:16 PM

trans was last serviced around 257,000 miles. Any other suggestions?

junior3382 · 08-16-2008, 03:20 PM

This is automatic? If so, is the shift linkage loose by chance? Do you tow with the truck?

DaveF · 08-16-2008, 03:27 PM

Yes this is an automatic and I do occasionaly tow a trailer.
It was acting up for a little while shifting into overdrive sometimes
and now it doesn't go into overdrive at all. Input and Output speed sensors have been changed but didn't make a difference.

junior3382 · 08-16-2008, 03:31 PM

does this have a sperate spot on the shifter for the overdrive like P~R~N~OD~D~2~1...etc.... OR does it have a button to engage it, like on the end of the shift lever?

DaveF · 08-16-2008, 03:32 PM

There is a seperate spot on the shifter for overdrive.

junior3382 · 08-16-2008, 03:43 PM

Acting up for a while and with 265,000 miles on it, it may actually be time to consider the tranny either needs replaced or rebuilt.... If the sensors are new, the linkage is tight, the fluid is full and clean and this has been a growing issue... that would be my guess... Sorry... i wish I could help more.

75K30 · 08-16-2008, 06:14 PM

4L80E's have electronic shift solenoids that go bad and do not permit them transmission to shift.
Easily removed from the outside of the transmission, and the pan does not have to be romoved.
Should solve the problem, but that is quite a few miles on an automatic.
Consider yourself one of the few that has obtained this many miles.

08-16-2008, 03:03 PM	#1
DaveF Junior Member Join Date: Aug 2008 Posts: 4	94 chevy 3500 w/ 265,000 miles wont shift I have a 94 chevy 3500 2 wheel drive with 265,000 miles and it only has 2nd and 3rd gear. It starts off the line in 2nd and shifts to 3rd but won't go into overdrive. What might be the problem? Trans was last serviced around 257,000 miles. Last edited by DaveF; 08-16-2008 at 03:15 PM.

08-16-2008, 03:05 PM	#2
junior3382 Senior Member Join Date: Mar 2007 Location: Currently, I live in Lancaster county, Pennsylvania. Posts: 3,040	it has 265,000 miles. Simple. LOL Welcome to the site, just curious, when was the last time you had the tranny serviced? Fluid changed, new filter etc? __________________ *Parts have been found, tools are collecting, tensions are rising, the weather is changing...look out.... the SAS is comming!*

08-16-2008, 03:20 PM	#4
junior3382 Senior Member Join Date: Mar 2007 Location: Currently, I live in Lancaster county, Pennsylvania. Posts: 3,040	This is automatic? If so, is the shift linkage loose by chance? Do you tow with the truck? __________________ *Parts have been found, tools are collecting, tensions are rising, the weather is changing...look out.... the SAS is comming!*

08-16-2008, 03:31 PM	#6
junior3382 Senior Member Join Date: Mar 2007 Location: Currently, I live in Lancaster county, Pennsylvania. Posts: 3,040	does this have a sperate spot on the shifter for the overdrive like P~R~N~OD~D~2~1...etc.... OR does it have a button to engage it, like on the end of the shift lever? __________________ *Parts have been found, tools are collecting, tensions are rising, the weather is changing...look out.... the SAS is comming!*

08-16-2008, 03:43 PM	#8
junior3382 Senior Member Join Date: Mar 2007 Location: Currently, I live in Lancaster county, Pennsylvania. Posts: 3,040	Acting up for a while and with 265,000 miles on it, it may actually be time to consider the tranny either needs replaced or rebuilt.... If the sensors are new, the linkage is tight, the fluid is full and clean and this has been a growing issue... that would be my guess... Sorry... i wish I could help more. __________________ *Parts have been found, tools are collecting, tensions are rising, the weather is changing...look out.... the SAS is comming!*

08-16-2008, 03:16 PM	#3
DaveF Junior Member Join Date: Aug 2008 Posts: 4	trans was last serviced around 257,000 miles. Any other suggestions?

08-16-2008, 03:27 PM	#5
DaveF Junior Member Join Date: Aug 2008 Posts: 4	Yes this is an automatic and I do occasionaly tow a trailer. It was acting up for a little while shifting into overdrive sometimes and now it doesn't go into overdrive at all. Input and Output speed sensors have been changed but didn't make a difference.

08-16-2008, 03:32 PM	#7
DaveF Junior Member Join Date: Aug 2008 Posts: 4	There is a seperate spot on the shifter for overdrive.

08-16-2008, 06:14 PM	#9
75K30 Senior Member Join Date: Jul 2006 Posts: 2,630	4L80E's have electronic shift solenoids that go bad and do not permit them transmission to shift. Easily removed from the outside of the transmission, and the pan does not have to be romoved. Should solve the problem, but that is quite a few miles on an automatic. Consider yourself one of the few that has obtained this many miles.

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