| Tranny fluid check via modulator question [message #276261] |
Mon, 20 April 2015 07:39  |
Tilerpep
Messages: 404
Registered: June 2013
Location: Raleigh, NC
Karma:
|
Senior Member |
|
|
I found an old post with the attached...but the second question I share and didn't see an answer. I don't want to crawl under while running, but it seems that would be necessary...
Also, I would assume moderator is threaded in...do I use a sealant or something going back in?
Start the engine and let it run until warm. Remove the vacuum modulator and
let the fluid run out until the level is as high as the bottom of the
modulator opening. Replace the modulator. Check for leaks. Calibrate
dipstick while you are at it. Should read full when fluid is at the bottom
of the modulator hole.
Jim Hupy
Salem, OR
78 GMC Royale 403
To do the modulator spill over test, how much time do we have after key off to get an accurate level before the converter drain down comes in to play and you end up under filled? Also is this test at full operating temp, like 20 min driving?
John Lebetski
Woodstock, IL
77 Eleganza II
Source America First
1975 Glenbrook, 1978 Royale rear bath
Raleigh, NC
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
