Can ODB2 READERS READ THE TRANSMISSION TEMP ON THE

IMHO, Jeep/Chrysler hasn't had a great rep for the transmissions within the past 20 years. In most instances, transmissions should last the entire lifetime of the vehicle when cared for properly. Checking fluid levels regularly, as well as following manufacturer service intervals make the difference. Keep in mind that transmission fluid should be changed just like your oil, but on a very different schedule.The Grand Cherokee being a model plagued with transmission problems especially if you have the four-wheel drive "Quadratrac" transfer-case package. I am not sure sure if this is a "maintenance free" (I hate that term) or "sealed for life transmission" and case. If it is, I feel very sorry for you because like many others, you have been mislead. Transmission fluid does in fact have a service life and the fluid certainly takes a beating. Not only does it lubricate your transmission as oil does for an engine, it acts as a coolant, and it is also a hydraulic fluid to assist automatic shifting in the case of automatic transmissions. Transmission fluid should be changed because old fluid loses viscosity and can become "dirty" due to natural surface oxidation of internal parts. Unfortunately, usually by the time a transmission starts "acting up" or starts making noise the damage is already done. If you have an automatic, the whole transmission will have to be redone or replaced. If it is a manual trans its possible certain components can be replaced. I have had a girlfriend and co-worker who both had these Jeeps with automatic and wound up ditching them because of tranny or xfer-case issues. One jeep started having trans problems at 70,000 miles. :-(

Drain fluid into a clean plastic bowl, check for brass cuttings or metal shavings in sunlight. If present get complete trans overhaul.

i have you inspected the linkage?
Is this an automatic transmission?
Is this 4-wheel drive?
Have you checked the transmission fluid?
Best regards
Ck

Automatic Transmission,45RFE......AP4
Synthetic Multi-Vehicle Automatic Transmission Fluid (ATFQT)
Automatic Transmission,42RE......AP4
Synthetic Multi-Vehicle Automatic Transmission Fluid (ATFQT)
Differential, Rear W/ Vari-Lok......GL-5

If it is an automatic,fill it threw the dip stick for the transmission.

Approx 4-5 quarts when draining pan and replacing filter only.Hope this helps

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3

dextron II or III

In automatic transmissions the second to third syncronizers always seem to go bad first, the syncronizers are worn, bad or gone. This is common in these transmissions. Also you might check your trans fluid level, sometimes a low level will cause the transmission not to shift correctly.

Use Dexron® II or ATF Plus/Type 7176 automatic transmission fluid (or their superceding fluid type).