| Re: 2001 Dts 27,000 Miles Service Transmission Code?
I don't know. I did read somewhere that there was an TSB on them though. I think I also read that this was a relatively common problem with these cars, although I have to say this is the first time I've heard of it directly if that's what it is.
Maybe this will help. Thjis is from AllData
A/T - Firm Shifts/Chuggle/No Decel Downshift/DTC P0742
Bulletin No.: 02-07-30-039F
Date: July 27, 2005
TECHNICAL
Subject:
Firm Transmission Shifts, Shudder/Chuggle, Transmission Won't Downshift On Deceleration, Service Engine Soon Light Illuminated, DTC P0742 Set (Perform Diagnostics and Replace TCC PWM Solenoid)
Models:
2003 Buick Century, LeSabre, Park Avenue, Regal, Rendezvous
1999-2002 Cadillac Eldorado
1999-2003 Cadillac DeVille, Seville
2003 Chevrolet Cavalier, Impala, Malibu, Monte Carlo, Venture
1999 Oldsmobile Aurora
2001-2003 Oldsmobile Aurora
2003 Oldsmobile Alero, Silhouette
2003 Pontiac Aztek, Bonneville, Grand Am, Montana, Sunfire
2003-2004 Pontiac Grand Prix
with 4T65E Transaxle (RPOs MN3, MN7, M15, M76), 4T40E/4T45E Transaxle (RPOs MN4 or MN5) or 4T80E Transaxle (RPO MH1)
with PWM Solenoid Manufacturing Julian Dates Between 219 and 3048
Supercede:
This bulletin is being revised to change the statement of Transmission Release Pressure to Torque Convertor Clutch (TCC) Release Pressure. Please discard Corporate Bulletin Number 02-07-30-039E (Section 07-Transmission/Transaxle).
Condition
Some customers may comment that the transmission shifts hard, a shudder/chuggle is felt on deceleration or the Service Engine Soon (SES) light is illuminated.
A technician may find DTC P0742 set.
Customers with 4T80E transaxles may also comment on a "bump" feeling at approximately 61-68 km/h (38-42 mph) when they lift and then tip into the throttle. There may also be a concern of whine noise in 3rd or 4th gear with or without the Service Engine Soon light/message displayed and with DTC P0742 set.
Correction
DO NOT REPLACE THE VALVE BODY AND PUMP ASSEMBLY.
Important: This test is not applicable to the 4T80E transmission. Instead, replace the TCC PWM solenoid on vehicles with a 4T80E transmission using published procedures for the vehicle being serviced.
Last edited by codewize; 02-18-07 at 12:53 AM.
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