1996 GMC Jimmy Transmission

Chevy_Boy · #1 07-03-2005, 01:45 AM

I have a big issue with my 1996 Jimmy, In overdrive or drive it will take forever to shift up, and my little light that shows what gear im in keeps going off and on. At first when the light went out then that meant so did my transmission. Anyway if i shift up from first to drive manually if shifts okay but on its on it seems like it isnt getting any power. I changed the fluid and filter an nothing happend... Im pretty sure im going to hae to dump a grand on a new tanny but i just needed some help

96JimmySLE · #2 07-03-2005, 03:10 PM

How many miles do you have on the truck? Also, the shift indicator has nothing to do with the operation of the tranny. The lights just tell you what gear position you are in. I would check the fluid level on a level surface and when the truck is hot. Shift all through the gears slowly, go from park to reverse to nutral and down through the drive gears. Then check the fluid.
If the fluid is good, it sounds to me like your clutches are worn. Have it checked at a tranny shop. I had mine rebiult last summer for $1400.00. But that was after 187000 miles. Good luck.

Chevy_Boy · #3 07-03-2005, 06:56 PM

My truck has 97,000 miles, the fluid is good... When i go through the gears you can feel it switch and lock in.. I think what you said about the clutches may be right? If and when i get it checked how much does replacing the clutches cost and what should i do to prepare my self from gettin ripped off at the shop.. lol thanks for helping anyother tips will be greatly appreciated

blazee · #4 07-03-2005, 07:03 PM

Is the check engine light on?

Chevy_Boy · #5 07-06-2005, 09:27 PM

The check engine light is on, i goes on and off

blazee · #6 07-07-2005, 07:37 AM

Go to autozone and get the codes read for free then come back and post them. There is a good chance that there is nothing wrong with your tranny.

Chevy_Boy · #7 07-07-2005, 07:12 PM

When i Do get this code what could possibly be wrong, im just curious thats all, i should be able to go get them later today

blazee · #8 07-07-2005, 08:54 PM

It sounds as though it is in limp mode, which is the tranny's natural reaction when certain codes are set.

Here's a list of the different codes and what the tranny does when one is set:
http://www.automotiveforums.com/vbul...d.php?t=425725

It could be something as simple as a loss of power to the tranny, which could caused by a blown fuse....damaged wire....ignition switch....remote start......
http://www.automotiveforums.com/vbul...d.php?t=423437

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