I have a 1.5 yr. old GMC Envoy with a rusty transmission dip stick. I can see flakes of rust deposit all along its length, and they are falling off as I pulled the stick out of the tube. I have never seen anything like this. Anyone has similar experience ? I don't know if the tube is also rusted. This car has been well kept in a garage out of rain and moisture.
I've never seen this but it sounds like you may have a leak in the in-radiator cooler that's allowing water to enter the transmission. I would take it back to the dealer and let them check it out under the warranty. Group: alt.autos.gm Date: Sat, Apr 22, 2006, 10:01am From: snipped-for-privacy@xyz.com (DL) I have a 1.5 yr. old GMC Envoy with a rusty transmission dip stick. I can see flakes of rust deposit all along its length, and they are falling off as I pulled the stick out of the tube. I have never seen anything like this. Anyone has similar experience ? I don't know if the tube is also rusted. This car has been well kept in a garage out of rain and moisture.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% "Sometimes, when you're up to your butt in alligators, it's hard to remember that the intial objective was to drain the swamp." ~ Unknown ~
Yes, it has a locking cap which I suppose keeps moisture out. The rust is not just surface rust, but rather like bits of rust that are loosely attached. I think I will take it to the dealer for a look.
Moisture and/or acids in the trans. Better have it looked at before it eats the trans. Common problem in _engines_ that don't get heated up or have leaks. I've never seen that in a trans though.
Is the Blazer version? With the 4.3 v-6 engine? What year is the vehicle?
We had issues with the transmission tubes and dipsticks rusting. Here is an old bulletin that may apply. If your vehicle is only a couple of years old, this should have been addressed by now.
MODELS: 1995-98 CHEVROLET AND GMC S/T MODELS 1996-98 OLDSMOBILE BRAVADA WITH M30 TRANSMISSION
CONDITION:
SOME OWNERS MAY COMMENT ABOUT RUST ON THE TRANSMISSION FLUID INDICATOR.
CAUSE:
CONDITION MAY BE CAUSED FROM WATER ENTERING THROUGH THE INDICATOR UPPER TUBE SEAL.
CORRECTION:
ENGINEERING HAS RELEASED A NEW INDICATOR WITH AN IMPROVED SEAL AND CORROSION RESISTANT METAL INDICATOR. REPLACE THE OLD INDICATOR WITH THE NEW INDICATOR. USE THE PART NUMBER LISTED BELOW.
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