Question about 1997 GMC Jimmy
Nothing can be done other than what your already doing. 3-4 clutches are gone. thats something i seen everyday for 7 years working in a trans shop. only other option besides buying one is a rebuild. sorry.
Posted on Jan 04, 2014
Are you sure its slipping and not going into a lower gear? the passing gear linkage may be too tight..check that too
Posted on Jan 04, 2014
SOURCE: Transmission 1999 GMC Jimmy
Modulator Adjustment, Trans repair shops will tell you that you need it rebuildt just be FIRM and Ask for a Service and Adjustment
may involve 1 part
Posted on Jan 13, 2009
you have worn 3rd gear, hate to say it but mine did it in 2nd and had to get a new trans. try pulling your dipstick a smell it to see if it smells burnt or it is black in color
Posted on Jul 02, 2009
I assume that we are talking about an auto tranny here. If you have manual transmission, then you likely have to replace the gear box.
If you have automatic transmission:
If it doesn't switch to the upper gears at all, then a possibility is that one or more gear shift solenoid switches located in the valve body are probably defective. The solenoid pack is an array of switches located inside the transmission, behind the valve body cover. When one solenoid in the pack is defective, the transmission will never switch to that determined gear.
Each solenoid can be tested by reading impedance at its contacts with an Ohm meter. If the solenoid is defective it will read Open (Ohms infinity).
Other common problem that may result in the symptoms described is a faulty TPS. The TPS is the throttle position sensor. This is located in the throttle body, under the hood. When the TPS is defective, the TCM, which is the electronic control module managing transmission, get an incorrect input, and the result is no shifting or shifting at the wrong time. The TPS is tested reading impedance or volts at its contacts while slowly pressing the accelerator pedal. If there are gaps in volts reading, or if voltage does not decrease/increase smoothly, then the TPS is bad.
If the above are OK, check the knock sensor. That is also used by the TCM to decide when to shift.
If all the rest is OK you have either a bad TCM or a problem with the gear box.
Posted on Jan 10, 2011
Two things: #1 someone has overfilled it by mistake thinking they were putting oil in the engine. Yes I have seen this.
#2 The transmission cooler in the radiator could be leaking antifreeze into the transmission through the cooling line raising the fluid level. I would look for milk shake foam on the dip stick and make sure you check trans in park and not neutral.
Posted on Jan 15, 2012
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