Kia carnival wont change into top gear and puts out code for shift solenoids D & B could the control module have something to do with that? In 2004 model

SOURCE: Fuel Filter location on a Petrol 2004 Kia Carnival

The fuel filter is located in the fuel tank, pump removal is required to replace. There is an inspection cover behind the front seats on the floor to gain access to the pump. stupid idea. but whats not stupid about kia.

SOURCE: Hi my name is Kevin, and I just had a motor put

make sure the troque converter is good and all the sensors on the transmission are ok and check the linkage first

SOURCE: WHAT DOES THE HOLD BUTTON ON THE AUTOMATIC SHIFT

the hold buttion on the auto is just like a overdrive button on other autos when you press it a orange light will glow saying hold this will stop it from going into 4th this is recommended when you are not doing speeds over 60kph/40mph
the only reasion why i am so shaw of this is my sister owns one lol

SOURCE: 1991 Chev 1500 pickup, 5L,

Vacuum Modulator -(THM 400 only) REMOVAL & INSTALLATION NOTE: This applies to the THM 400 only.

1. Raise and support the front end on jackstands.
2. Disconnect the vacuum line at the modulator.
3. Remove the screw and retaining clamp. Fig. 1: Vacuum modulator on the THM400
   
   
4. Remove the modulator. Be careful, some fluid may run out. To install:
   
5. Install the modulator.
6. Install the vacuum line. Be careful not to kink the vacuum line during installation. Replace any lost fluid.

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The Governor is used in newer transmissions:

HYDRAULIC CONTROL SYSTEM The hydraulic pressure used to operate the servos comes from the main transmission oil pump. This fluid is channeled to the various servos through the shift valves. There is generally a manual shift valve which is operated by the transmission selector lever and an automatic shift valve for each automatic upshift the transmission provides. NOTE: Many new transmissions are electronically controlled. On these models, electrical solenoids are used to better control the hydraulic fluid. Usually, the solenoids are regulated by an electronic control module. There are two pressures which affect the operation of these valves. One is the governor pressure which is effected by vehicle speed. The other is the modulator pressure which is effected by intake manifold vacuum or throttle position. Governor pressure rises with an increase in vehicle speed, and modulator pressure rises as the throttle is opened wider. By responding to these two pressures, the shift valves cause the upshift points to be delayed with increased throttle opening to make the best use of the engine's power output. Most transmissions also make use of an auxiliary circuit for downshifting. This circuit may be actuated by the throttle linkage the vacuum line which actuates the modulator, by a cable or by a solenoid. It applies pressure to a special downshift surface on the shift valve or valves. The transmission modulator also governs the line pressure, used to actuate the servos. In this way, the clutches and bands will be actuated with a force matching the torque output of the engine.
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At any rate, if the auto transmission shifts roughly, try to have it flushed out and refilled with new transmission fluid for $100 or so.

If this doesn't solve the problem, the transmission will have to be rebuilt to original specifications, or replaced with a transmission that doesn't have this problem (used or another rebuilt).

SOURCE: 2003 Ford Focus: Pulls Codes P0751, Shift Solenoid

i have hard time shifting from 1st gear to 2nd gear please help me