When warm transmission has a shifting problem

Good afternoon.

If it were a solenoid, it would code. Do you have any codes stored? Is the check engine light on?

I would start by changing the oil/filter in the transmission. It sounds like a valve body issue.

Roy

It is on the side of the transmission. If that is the issue, it needs to be confirmed before replacing.

Is the check engine light on?

Roy

1. Remove air cleaner (ACL) assembly.
2. Disconnect battery ground cable and positive battery cable.
3. Remove battery and battery tray.
4. Disconnect digital Transmission Range (TR) sensor and trans-axle harness electrical connectors and reposition engine wire harness.
5. Place digital TR sensor manual lever in "park" position.
6. Install Three Bar Engine Support 303-D063 (D88L-6000-A) or equivalent with Engine Lifting Brackets 303-050 (T70P-6000) and support engine assembly.
7. Remove main control cover upper retaining bolts.
8. Raise and suitably support vehicle on hoist.
9. Remove LH front wheel tire and wheel assembly.
10. Remove LH front fender splash shield.
11. Remove LH engine support and insulator.
12. Position drain pan under trans-axle main control cover and remove remaining lower trans-axle main control cover bolts and remove trans-axle main control cover and gasket.
13. Disconnect Transmission Fluid Temperature sensor (TFT sensor) from main control valve body and solenoid electrical connectors.
14. Remove trans-axle wiring harness from chain cover.

15. Caution: Do not remove pump assembly cover bolts.

Valve Body Bolt Removal
image Open In New TabZoom/Print

Remove main control valve body retaining bolts, disconnect manual linkage and carefully slide pump assembly and main control valve body off of pump shaft and remove from trans-axle.