Hello all,
My wife's Tahoe has given her a scare a couple of times now. When sitting at a stop light, she says it acted like it was in neutral when she let off the brakes and stepped on the gas to go. It eased into gear, but took a few seconds to go. I checked the fluid and it was slightly above the full mark and was clear with no signs of being burnt (smell or discoloring). It is a 2001 with 43k miles, 5.3 with (I think) the 4l60e (you can correct me if I'm wrong), 4x4.

Thanks in advance for any help anyone can provide! DDD.

have had some valve body problems with the 4l60e and if i'm not mistaken there is a reprogram for that problem.

Incorrect Transmission Shifts, Poor Engine Performance, Harsh 1-2 Upshifts, Slips 1st and Reverse, Torque Converter Clutch (TCC) Stuck Off/On, DTC P0730, P0756, P0757, P0741, P0742 #02-07-30-013D - (Mar 31, 2005)
Incorrect Transmission Shifts, Poor Engine Performance, Harsh 1-2 Upshifts, Slips 1ST and Reverse, Torque Converter Clutch (TCC) Stuck Off/On, DTC P0730, P0756, P0757, P0741, P0742 (Clean Transaxle Valve Body and Case Oil Passages of Debris)

2001-2005 Cars and Light Duty Trucks

2005 Saturn Relay

with 4T65E Transmission (RPOs M15, MN3, MN7, M76)

This bulletin is being revised to include additional diagnostic information for 2005 model year vehicles and add a model. Please discard Corporate Bulletin Number 02-07-30-013C (Section 07 -- Transmission/Transaxle).

Condition

Some owners may comment on any one or more of the following conditions:

<TABLE border=0><TBODY><TR><TD vAlign=top>• </TD><TD vAlign=top>The SES lamp is illuminated. </TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top>• </TD><TD vAlign=top>The transmission slips. </TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top>• </TD><TD vAlign=top>The transmission does not shift correctly, is very difficult to get the vehicle to start moving or the engine lacks the power to move the vehicle. </TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top>• </TD><TD vAlign=top>Poor engine performance. </TD></TR></TBODY></TABLE>
Cause

The most likely cause of the various conditions may be chips or debris:

<TABLE border=0><TBODY><TR><TD vAlign=top>• </TD><TD vAlign=top>All years--Pressure Reg. Valve (Bore 1) or Torque Signal Valve (Bore 4) stuck. </TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top>• </TD><TD vAlign=top>On 2001 - 2002 vehicles, a plugged orifice on the case side of the spacer plate. </TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top>• </TD><TD vAlign=top>ON 2003 - 2005 vehicles, restricted movement of the 2-3 shift valves in the valve body. </TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top>• </TD><TD vAlign=top>On 2003 - 2005 vehicles, restricted movement of the 3-4 shift valves in the valve body. </TD></TR></TBODY></TABLE>