1995 Chevy Blazer Transmission Speed Sensor

ORTUBE

MEMBER
1995 CHEVROLET BLAZER
6 CYL
2WD
AUTOMATIC
18,100 MILES

My Blazer had a leak from the speed sensor. I bought a new one. When I installed & go reverse & foward start to making a noise. I pull it back & I do not see anything else inside there. The old one has a silver grease, but I do not see no difference from the new one. Please, help me to solve this issue.

Thanks

updated 3-9-09
I DID INSTALL THE OLD ONE & MAKE THE SAME NOISE NOW. MY UNCLE TOLD THEY SUPPOSE TO HAVE A PLASTIC GEAR, BUT I DON`T SEE ANYTHING THERE. PLEASE, HELP ME TO SOLVE THIS ISSUE.
THANKS

updated 3-11-09
Thanks. I figure out, is a magnetic speed sensor. I changed the O Ring to the old one & works perfect. Thank you. The Fuccillo Chevrolet service technician asked me for 78.98 to do that. I only spend $35.00 in the VSS.

2 Replies

IMPALASS

MECHANIC
3,112 POSTS

Hello -

When you put the old one back in do you have the same problem?

Is it seated properly?

I would jack the rear end up, put it in gear and slowly turn the drive shaft with your hand on the VSS and see if you can feel if something is hitting it?

I don't see any TSBs on this problem.

Are you sure the part looks exactly the same?

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Sunday, March 8th, 2009 AT 7:32 PM

IMPALASS

MECHANIC
3,112 POSTS

Hello -

Sorry so long to get back with you..... Having some computer problems - major ones, so please bear with me as I limp along here. Also your post somehow got lost in the system.

Okay, I don't' believe there is a gear on it..... The one I looked at doesn't. Some do but on this one no. But, you should have a part on the side, a spline looking that something would fit into and should be lined up.

Remove the old and new, drive it forward and in reverse and see if you hear the noise. If not you are not installing it correctly and the splines are not lining up.

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Tuesday, March 10th, 2009 AT 6:55 PM