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Old 06-29-2017, 05:21 AM   #1
paintinx
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suburban 1979 - noise from automatic transmission

good morning.

I have a question regarding a very quiet noise when I start driving with my 1979 chevy suburban big block / TH 400.

It happpens not in N or P, only in D

I have checked the automatic transmission oil level. In P.
Hot engine. It is full.

Not when the car is running ... only when I start running ... driving.
also when I drive uphill.

Very quiet, sounds like "sucking oil" ...

Any suggestions?

Thx in advance, Stephan
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Sub79 - 7.4 ltr big block
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Old 09-21-2017, 04:51 AM   #2
paintinx
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Re: suburban 1979 - noise from automatic transmission

solution: check the oil level ...
__________________
2 kids, 2 cars
Sub2k - 5.3 ltr vortec
Sub79 - 7.4 ltr big block
Das Schiff ist im Hafen sicher,
aber dafuer nicht gebaut.
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Old 09-22-2017, 12:22 AM   #3
kwmech
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Re: suburban 1979 - noise from automatic transmission

You may have to pull the pan and make sure the tube did not come out of the filter or the center bolt holding the filter up has allowed the filter to drop off
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Old 11-05-2020, 07:55 PM   #4
malc1080
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Re: suburban 1979 - noise from automatic transmission

Anyone own a factory 454 1979-1980 suburban? I really need a picture of the emission sticker diagram please! Thank you
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Old 11-12-2020, 04:08 AM   #5
paintinx
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Smile Re: suburban 1979 - noise from automatic transmission

Quote:
Originally Posted by malc1080 View Post
Anyone own a factory 454 1979-1980 suburban? I really need a picture of the emission sticker diagram please! Thank you
Me!

Good morning.

I got - a few years ago - a very helpful link from "hatzie"
and hope it is ok to relink his great work to you:

1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts

http://67-72chevytrucks.com/vboard/s...d.php?t=545416

Best, Stef
__________________
2 kids, 2 cars
Sub2k - 5.3 ltr vortec
Sub79 - 7.4 ltr big block
Das Schiff ist im Hafen sicher,
aber dafuer nicht gebaut.
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