***IMPORTANT*** GM 4L60E (Auto. Tranny) Maintenance Tip
Thread Starter
Melting Slicks
Joined: Jun 1999
Posts: 2,263
Likes: 48
From: NJ
***IMPORTANT*** GM 4L60E (Auto. Tranny) Maintenance Tip
The pressure regulator boost valve & it's sleeve should be replaced every 40,000 miles to avoid major damage that occurs when accumulated wear in the boost sleeve causes insufficient pressure to be made available in reverse. GM dealers are seeing numerous major repairs of the 4L60E at around 50,000 plus miles being traced to this boost valve & sleeve. The valve & sleeve can be replaced easily during a routine service of the tranny at an additional cost of about $50.00. This should be considered a must do maintenance procedure on the 4L60E.
Burning Brakes
Joined: Apr 1999
Posts: 947
Likes: 1
From: Lake Worth. Fl.,USA Fl
Re: ***IMPORTANT*** GM 4L60E (Auto. Tranny) Maintenance Tip (LIGHTNING)
Thanks for the tip!. Do you have a picture or drawing of this valve and sleeve.? Need info on how to replace it.. need to find it first. Thanks for any help.
Racer
Joined: Aug 1999
Posts: 307
Likes: 0
From: Barnwell, SC USA
Re: ***IMPORTANT*** GM 4L60E (Auto. Tranny) Maintenance Tip (LIGHTNING)
Just curious if this is unique to the Vette. The 4L60E in my Roadmaster has 163,000 miles with no problems. (knock on wood!) :)
Thread Starter
Melting Slicks
Joined: Jun 1999
Posts: 2,263
Likes: 48
From: NJ
Re: ***IMPORTANT*** GM 4L60E (Auto. Tranny) Maintenance Tip (LIGHTNING)
JCR,
Sorry, i don't have any pic's of the valve & sleeve. but i'm sure there is a diagram in the shop manuals for c5...or any GM car w/ the 460LE Tranny.
Robbie,
This problem is NOT unique to the vette. A lot of guys who have Impala SS & Caprice ('92-'96) have this problem...and yes, that would include your Roadmaster. May be a good idea to replace the valve & sleeve...before you have to replace tranny
:U
Sorry, i don't have any pic's of the valve & sleeve. but i'm sure there is a diagram in the shop manuals for c5...or any GM car w/ the 460LE Tranny.
Robbie,
This problem is NOT unique to the vette. A lot of guys who have Impala SS & Caprice ('92-'96) have this problem...and yes, that would include your Roadmaster. May be a good idea to replace the valve & sleeve...before you have to replace tranny
:U
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Instructor
Joined: Jul 2002
Posts: 100
Likes: 0
From: Staten Island NY
Re: ***IMPORTANT*** GM 4L60E (YELLOWDREAMZ)
This mod is as easy as they come if you have the right tools, in this case it's a small snap-ring plier. I reccomend buying the aftermarket piece from SONNAX industries, I use it in all my customers transmissions regardless of stock and up to full race. While your in there you may also want to consider a new manifold pack, GM only, this pack sends a verification signal to the computer after it has commanded a shift, if it gets old lazy the computer will start playing with line pressures and even sometimes cause erronious downshifts.... :chevy
Frank Fernandez@RPMdragracing.com
Frank Fernandez@RPMdragracing.com
