It's dragging to shift to 2nd, 3rd, & 4th gear even if hold my feet on the accelerator. The RPM goes up to nearly 4 & it still won't hardly shift to a higher gear.

Automatic transmission with 198,742 miles. I changed my A & B transmission control sensors, 1-2 & 2-3. And I put in a new 3-2 down shift solenoid. I put in a new filter and 6 quarts of IV transmission fluid.

What else could be the problem.

198,742 miles

 

Open up a can of Whoopass>>>>>TRANS-TUNE TRUSTED BY MECHANICS SINCE 1942
Also check fluid level(at operating temp running) & color.

 

If your Trans has never been rebuilt or replaced, you are past the (miles) life expectancy of your 4l60E. The work you did before put a band-aid on it.

 

The 4l60e can easily surpass 300k without abuse and proper maintenance!

 

Except when they don't get beyond 100k. The H3 is a heavy FT 4X4/AWD and that AT life is shortened. Add a heavy foot, off road tires, towing, and you'd be hard pressed to see 125k before a rebuild. 199k is good living darn right lucky.

 

Exception, not the rule.

 

The exception proves the rule!