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Old 04-06-2007, 11:52 AM   #1 (permalink)
brianteel
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P0735

this is the second time i have gotten this code. both times i was getting on the highway and it was alittle rough. I do run efilive with a mild economy tune. is this due too much power or is it tires or soemthing else
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Old 04-06-2007, 11:58 AM   #2 (permalink)
Bodysurfer
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That's a limp code, if I recall....

Here is the DieselPlace DTC lookup tool:
http://www.dieselplace.com/forum/dtc.php


Code:P0735
Modules:TCM
Description:Incorrect 5th Gear Ratio
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Old 04-06-2007, 01:40 PM   #3 (permalink)
brianteel
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i know what the code means. i have the SI manual and can look up all the info on it
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Old 04-06-2007, 02:23 PM   #4 (permalink)
Mike L.
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Quote:
Originally Posted by brianteel;1702587;
i know what the code means. i have the SI manual and can look up all the info on it
Then you know what's causing it.
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Old 04-06-2007, 02:28 PM   #5 (permalink)
RI Chevy Silveradoman
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DTC Information
Code: P0735
Modules: TCM
Description: Incorrect 5th Gear Ratio

Use the handy DTC Trouble code looker upper in the 2006-2007 engine section set up by this site master!
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Old 04-06-2007, 02:29 PM   #6 (permalink)
astieg
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Quote:
Originally Posted by brianteel;1702587;
i know what the code means. i have the SI manual and can look up all the info on it
Well then share with us... what does it tell you........ Are you also asking for recomendations as for how to prevent this from happening again???? If so ask.... and the gurus will chime in....
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Old 04-06-2007, 02:35 PM   #7 (permalink)
brianteel
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DTC P0735
Circuit Description

The transmission control module (TCM) uses input from the input speed sensor and output speed sensor (OSS) to determine gear ratios. The TCM then compares the known gear ratio to the calculated gear ratio for the current range.

DTC P0735 is a type A DTC.
DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0735 Incorrect 5th Gear Ratio
Conditions for Running the DTC

* DTCs P0716, P0717, P0721, P0722, P0875, and P0876 are not active.
* The components are powered and ignition voltage is greater than 9.0 volts and less than 18 volts.
* Output speed exceeds 200 RPM.
* Fifth range is selected and attained.

Conditions for Setting the DTC

DTC P0735 sets when the calculated fifth range ratio, steady state, differs from the known fifth range ratio.
Action Taken When the DTC Sets

* The TCM illuminates the malfunction indicator lamp (MIL).
* The transmission defaults to 4th range while diagnostic response is active.
* If the shift selector is moved to NEUTRAL, the transmission will shift to NEUTRAL.
* If the shift selector is moved to REVERSE, the transmission will shift to REVERSE, unless the transmission is compromised by a direction change. In that case, the transmission will shift to NEUTRAL.
* If the shift selector is returned to a forward range and the transmission is compromised by over speeding or direction change, the transmission will lock in NEUTRAL.
* DTC P0735 will be stored in TCM history.
* The TCM freezes shift adapts.
* The TCM inhibits torque converter clutch (TCC) engagement.

Conditions for Clearing the DTC

A scan tool can clear the code from TCM history. The TCM automatically clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without failure.
Diagnostic Aids

* Incorrect ratio codes typically indicate mechanical conditions with specific clutches, such as 4th and 5th clutch and 3rd, 5th, and Reverse clutch, for 5th range.
* Incorrect ratio code could indicate a hydraulically failed solenoid. Observe DTC information for specific solenoid.
* Clutch test mode can be used to observe stall speed.
* You may have to drive the vehicle in order to experience a condition.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

3.

This step tests ignition voltage.
5.

This step tests for turbine speed not remaining at zero in fifth range.

Step


Action


Value


Yes


No

Schematic Reference: Automatic Transmission Controls Schematics

1


Did you perform the Diagnostic System Check - Vehicle?


--


Go to Step 2


Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2


Measure the transmission fluid level. Refer to Transmission Fluid Checking Procedure .

Is the transmission fluid level correct?


--


Go to Step 3


Go to Transmission Fluid Checking Procedure

3


1. Install the scan tool.
2. Turn ON the ignition, with the engine OFF.

Important

Before clearing the DTC, use the scan tool in order to record the Freeze Frame and Failure Records for reference. The Clear Info function will erase the data.
3. Record the DTC Freeze Frame and Failure Records.
4. Clear the DTC.
5. Using the scan tool, measure ignition voltage.

Is the voltage within the specified range?


9-18 V


Go to Step 4


Go to DTC P0562 for low voltage or DTC P0563 for high voltage

4


1. Drive the vehicle under normal operating conditions.
2. Using the scan tool, monitor engine, turbine, and output speed readings.

Is speed sensor data erratic?


--


Go to the appropriate speed sensor DTC


Go to Step 5

5


Refer to Transmission Stall Test Notice in Cautions and Notices.

Conduct a clutch test for fifth range. Refer to Clutch Test .

Did turbine speed remain at zero?


--


Go to Diagnostic Aids


Go to Step 6

6


1. Remove the transmission oil pan. Refer to Automatic Transmission Fluid/Filter Replacement .
2. Inspect for contaminated fluid and excessive material in the pan.

Is fluid contaminated or excessive material found in the pan?


--


Go to Step 7


Go to Step 8

7


Remove the transmission for overhaul or replacement. Refer to Transmission Replacement .

Did you complete the replacement?


--


Go to Step 10


--

8


Inspect for a stuck or sticking trim valve.

Refer to Control Valve Body Cleaning and Inspection .

Did you find and correct a condition?


--


Go to Step 10


Go to Step 9

9


Replace pressure control (PC) solenoid A. Refer to Control Valve Solenoid Replacement .

Did you complete the replacement?


--


Go to Step 10


--

10


Perform the following procedure in order to verify the repair:

1. Clear the DTC.
2. Start the engine.
3. Using the scan tool, operate the vehicle under normal operating conditions.
4. Select Specific DTC.
5. Enter DTC P0735.

Has the test run and passed?


--


System OK


Go to Step 1
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Old 04-06-2007, 02:36 PM   #8 (permalink)
brianteel
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what i am asking is this definitly to much power and have i messed up my trans. is it spinning tires getting onto the highway due to bumps
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Old 04-06-2007, 03:00 PM   #9 (permalink)
lakingslayer
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I'd say any of those situations but mainly getting on it with too much power. Lower your power level on your tune. A "mild economy tune" is how much rwhp?
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Old 04-06-2007, 03:05 PM   #10 (permalink)
Mike L.
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Incorrect ratio means slip. You hurt C3 and if you damaged it enough you will limp it even without a power programmer. Time for an upgrade.
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