Not changing gears? - 2009 CHEVROLET MALIBU

does the low power light illuminate in the dash? these cars have an issue with water leaks, and it shorts out the connector under the driver side dash.... most common right after it rains.... I have also seen the input shaft speed sensor cause this issue as well here is a the location of the sensor so you can check it out.

Lets read the codes first

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.

I had a new TCM put in my car and had it programmed this morning. I'm still having shifting issues (car shifts sometimes, stays at 3,000 RPM's at approx. 70 mph. Also, my check engine light is on, dash says "service traction", the doors unlock by themselves, and my side view mirror doesn't work. I'm pretty sure I need a new BCM but I'm wondering what may be causing my transmission to not shift properly.

first check your battery for condition including load test. tha tmay be the cause of all your issues. replacing parts like modules isn't the problem all the time even if it says so by code. low battery causes all kinds of problems. then have atrans guy look at your car for no shift it may be a clutch/seal problem or bad converter as well as a valvebody problem.

I was told that, since my TCM went out, it could have caused other modules to go out as well. I was sure I needed a BCM since my service traction light was on and the doors were unlocking themselves. I'll have the battery checked and have them look at the service engine code today. Thanks!

if thecode is in the700 range it's trans problem also because one module goes out means any other ones will. the service traction may be an abs problem so a pro will need to scan that and for door locks. auto parts can't scan that.

Thank you! It's actually P0036 which is for an O2 sensor; however, it could also mean the ECM is not working. I'm either going to take it to a trans shop or just replace the ECM. If the ECM is out can it cause fake error codes for things like the O2 sensors? I don't think it's just the O2 sensor because I'm still having some issues with shifting.

I doubt that its the ecm have a professional diagnose this as it can be a bad O2 or a short in the wiring. replacing parts on todays vehicles is the wrong way to go. Besides a pro would have to program it anyhow if the ecm was bad. You must think that all mechanics are thieves trying to fix this stuff your self or we are all out to rip people off to do what you are doing. You'll end up wasting more time and money trying to fix it only to have other problems due to incorrect diagnosis.

Thanks! I'm actually going to take it to a transmission shop. I'm actually just trying to save a little money and time since this is my only vehicle and now I'll have to drop it off there and get a rental car. I'm also losing time from work due to this, so I'd rather do it myself if I can save money and time. The tranny shifts a little so it's fine to drive home and to the shop in the morning now. They said it could be a number of things. The TCM had to have been bad anyway because it did fix the power steering and some other things. I just have a lot going on with it right now. If it's a wiring issue I may just get a new car because I'm sure that will likely be a lot to fix. Thanks for all your help!

Put car into Park like normal & shut off engine. Shifter felt mushy when I did so & I noticed doors didn't unlock like they normally do when it's put in Park. Able to shut off engine & remove key, but vehicle will roll without e-brake engaged. Brake pedal also seems to be not returning to normal position when released. Have tried moving shifter knob through all gears, but it only registers being in L (I can make it change from L1-L5 using the manual shift button, but that doesn't change anything I can see). I was driving in D of course, not L.

you will have to check your shift cable on the transmission to see if it's moving properly. dont sound like it.

Check the gear linkage and park/neutral switch

Shift cable was broken. First shop said transmission was also stuck in D & L though so had it towed to another shop that works on transmissions. They replaced shift cable & said nothing wrong with transmission at all.

It Makes A Sound Like If Its Forcing ItSelf To Move But It Wont Shift Out Of Second Gear. I Waste Gas Like Crazy And My Car Starts To Over Heat When I Pass 65 On The Freeway Please Help Find Out What Is Wrong With My Car... A Couple Of Months Back I Did A Recall For The Gear Transmission And Since Then I Been Having This Problem... I Just Took It Back To Chevy And They Said Thats Not The Problem Soo Now Im Clueless. ..

it's in limp mode , have a trans guy scan for codes but may need a rebuild.

I don't have that amount of money to rebuild So I replaced the input shaft speed sensor which fixed it BTW.

Nice work, we are here to help, please use 2CarPros anytime.

When driving my car I can can accelerate to around 50 miles per hour and after that I can't accelerate any further. The engine makes a revving up noise and I start to lose speed. Once I slow down I can accelerate again but it only goes up to around 45 or 50 and it starts all over again. Is it the transmission or hopefully something cheaper?

It sounds like the transmission is shifting into neutral rather than the next available gear. Has the check engine light come on?

when cold only, car hesitates badly to shift out of 1st, but once warmed up, runs perfect. no check engine light is on. please help

[quote:e2ec6b2f50="eric77437"]Transmission problem
2004 Chevy Malibu 4 cyl Front Wheel Drive Automatic 69028 miles
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when cold only, car hesitates badly to shift out of 1st, but once warmed up, runs perfect. no check engine light is on. please help[/quote:e2ec6b2f50]
have tranny fluid checked and adjusted
or you can change tranny filter and fluid

Engine Performance problem
2003 Chevy Malibu 6 cyl Front Wheel Drive Automatic 145k miles

Every time I got to accelerate my vehicle acts like its not getting fuel, the rpms will raise and stay raised till it jolts into the next gear. this happens around 30+ mph..I am also experienceing a strange whistling noise which i assume is a vacuum problem from a hose or gasket but that is not my main problem.

my mileage has dropped significantly, the vehicle wont shift properly and shudders into the next gears or stays at a high rpm and wont shift into the next gear.

Hi there,

Thank you for the donation,

This problem can often be a faulty TPI or MAF, i would also investigate the possible vacuum issue as well as this may have some baring on the problem, check for any unresolved fault codes with a scan as well, start here.

mark (mhpautos)

My car will not shift past what I believe is 2nd. I take off and it shifts once, then all it does is rev my engine up. I can continue to pick up speed but of course the faster I go the higher the rpm's go and the louder my engine gets so i don't go over 30. It doens't leak anything. Just started 2 days ago. Doesn't even get hot. All fluids have been checked and topped off from the dealership within the last couple weeks. Where should I start to see about getting this fixed. I have an hour drive to work and some is interstate driving and going 30 isn't an option. Help!

Trans in fail safe mode is check engine light on? need to have trans scanned to see what has failed a shift solenoid or speed sensor will cause condition.

I think my check engine light has been disconnected. I has never been on. I have taken it to auto zone to hook it up to a computer and it had 7 codes and they said they don't mess with that many and then deleted them. My other question is how can you tell how much transmission fluid is in the car and if it needs more? There is no dip stick. Also can you put to much transmission fluid in the car?

my 2001 malibu is not changing gears right and my engine light justed came on what could that be

Hello
Thanks for the donation



You will need to get the trouble codes retrieved for the Check Engine light. You can do this by using a diagnostic scanner. Most local part stores will do this service for free. Post the trouble codes and I will follow up. As for the tranny issue, inspect the fluid to ensure it is at proper level and make sure it does not have a burnt smell to it. Replace the tranny fluid and filter if necessary.







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tranny fluid is full and good, trouble codes came up as 1-2 and 3-4 shift solenoid, no signal to speed sensor, and torque converter solenoid. replaced vehicle speed sensor still nothing, before I start replacing part after part any ideas?

DTC P0753 1-2 Shift Solenoid Circuit Electrical (2.4L) Circuit Description The 1-2 Shift Solenoid Valve (1-2 SS Valve) controls fluid flow acting on the 1-2 shift valve. The solenoid is a normally-open valve that, in conjunction with the 2-3 Shift Solenoid Valve (2-3 SS Valve), allows four different shifting combinations (Refer to the 4T40-E Shift Solenoid State Table). The 1-2 SS Valve is attached to the valve body, within the transmission. The solenoid receives ignition voltage through the fused circuit. The Powertrain Control Module (PCM) commands the solenoid ON or OFF by providing a ground path through circuit 1222. When the PCM detects a continuous open, short to ground, or short to power in the 1-2 SS Valve circuit, then DTC P0753 sets. DTC P0753 is a type A DTC. Conditions for Setting the DTC • The ignition switch is in the RUN position. • The system voltage is 9-16 volts. • The PCM commands the solenoid ON, and the voltage remains high for 4.3 seconds. Action Taken When the DTC Sets • The PCM illuminates the Malfunction Indicator Lamp (MIL). • The PCM commands maximum line pressure. • The PCM commands a soft landing to 2nd gear. • The PCM inhibits TCC engagement. • The PCM freezes shift adapts from being updated. • DTC P0753 is stored in the PCM history. Conditions for Clearing the MIL/DTC The PCM turns OFF the MIL after three consecutive trips without a failure reported. A scan tool can clear the DTC from the PCM history. The PCM clears the DTC from the PCM history if the vehicle completes 40 warm-up cycles without a failure reported. The PCM cancels the DTC default actions when the fault no longer exists and the ignition is OFF long enough in order to power down the PCM. Diagnostic Aids • An open in circuit 1039 will cause multiple DTCs to set. • Inspect the wiring at the PCM, the transmission 20-way connector, the 1-2 SS Valve 2-way connector, and all other circuit connecting points for the following conditions: - A bent terminal - A backed out terminal - A damaged terminal - Poor terminal tension - A chafed wire - A broken wire inside the insulation - Moisture intrusion - Corrosion • When diagnosing for an intermittent short or open condition, massage the wiring harness while watching the test equipment for a change. Refer to Shift Solenoid Valve State and Gear Ratio . Test Description The numbers below refer to the step numbers on the diagnostic table. DTCs P0758 and P1860 will also set if the power circuit is open. This step tests the electrical operation of the solenoid. This step tests the PCM and the wiring to the transmission. This step tests circuit 1222 for a short to battery power. This step verifies that the circuit has the correct resistance. DTC P0753 1-2 Shift Solenoid Circuit -- Electrical (2.4L) Step Action Value(s) Yes No 1 Were you sent here from the Powertrain On-Board Diagnostic (OBD) System Check? -- Go to Step 2 Go to Powertrain On Board Diagnostic (OBD) System Check 2 Install the Scan Tool . With the engine OFF, turn the ignition switch to the RUN position. Important: Before clearing the DTCs, use the scan tool in order to record the Freeze Frame and Failure Records for reference. Using the Clear Info function will erase the stored Freeze Frame and Failure Records from the PCM. Record the DTC Freeze Frame and Failure Records, then clear the DTCs. Are DTCs P0758 and P1860 also set? -- Go to Step 3 Go to Step 8 3 Remove the AUTO TRANS fuse. Inspect the fuse for an open. Did you find the condition? -- Go to Step 4 Go to Step 6 4 Inspect circuit 1039 for a short to ground. Refer to General Electrical Diagnosis Procedures . Did you find and correct the condition? -- Go to Step 25 Go to Step 5 5 Inspect circuit 839 for a short to ground. Refer to General Electrical Diagnosis Procedures . Did you find the condition? -- Go to Step 22 -- 6 Inspect circuit 1039 for an open. Refer to General Electrical Diagnosis Procedures . Did you find and correct the condition? -- Go to Step 25 Go to Step 7 7 Inspect circuit 839 for an open. Refer to General Electrical Diagnosis Procedures . Did you find the condition? -- Go to Step 22 -- 8 Use the scan tool in order to command the solenoid ON and OFF 3 times. Listen at the transmission side cover. Does the solenoid click when commanded ON and OFF? -- Go to Diagnostic Aids Go to Step 9 9 Turn the ignition OFF. Disconnect the transmission 20-way connector (additional DTCs will set). Install the J 39775 Jumper Harness to the engine side of the 20-way connector. Using the J 35616-A Connector Test Adapter Kit, connect a test lamp from terminal E to terminal A. With the engine OFF, turn the ignition switch to the RUN position. Command the 1-2 Shift Solenoid Valve (1-2 SS Valve) ON and OFF three times. Is the test lamp ON when you command the solenoid ON, and OFF when you command the solenoid OFF? -- Go to Step 17 Go to Step 10 10 Is the test lamp always ON? -- Go to Step 11 Go to Step 13 11 Turn the ignition OFF. Disconnect the C2 (Black) PCM connector (additional DTCs will set). Turn the ignition switch to the RUN position. Is the test lamp ON? -- Go to Step 12 Go to Step 24 12 Inspect circuit 1222 for a short to ground. Refer to General Electrical Diagnosis Procedures . Did you find and correct the condition? -- Go to Step 25 -- 13 Is the test lamp always OFF? -- Go to Step 14 -- 14 Inspect circuit 1222 for an open. Refer to General Electrical Diagnosis Procedures . Did you find and correct the condition? -- Go to Step 25 Go to Step 15 15 Connect a test lamp from terminal A to a good ground. Is the test lamp ON? -- Go to Step 16 Go to Step 24 16 Inspect circuit 1222 for a short to battery power. Refer to General Electrical Diagnosis Procedures . Did you find and correct the condition? -- Go to Step 25 -- 17 Turn the ignition OFF. Disconnect the J 39775 Jumper Harness from the engine side of the 20-way connector. Connect the J 39775 Jumper Harness to the transmission side of the 20-way connector. Using the J 35616-A Connector Test Adapter Kit, connect the J 39200 Digital Multimeter (DMM) from terminal E to terminal A and measure the resistance. Is the resistance within the specified range? 19-31 ohms Go to Step 20 Go to Step 18 18 Is the resistance greater than the specified value? 250 ohms Go to Step 19 Go to Step 20 19 Inspect circuit 1222 for an open. Inspect circuit 1222 for a poor connection at the connector. Inspect circuit 839 for an open. Inspect circuit 839 for a poor connection at the connector. Refer to General Electrical Diagnosis Procedures . Did you find the condition? -- Go to Step 22 Go to Step 23 20 Measure the resistance from terminal A to a good ground. Is the resistance less than the specified value? 1,000 ohms Go to Step 21 Go to Step 23 21 Inspect circuit 1222 for a short to ground. Refer to General Electrical Diagnosis Procedures . Did you find the condition? -- Go to Step 22 -- 22 Replace the automatic transmission wiring harness. Refer to the Transmission Unit Repair Manual, 4T40-E Section. Is the replacement complete? -- Go to Step 25 -- 23 Replace the 1-2 SS Valve. Refer to the Transmission Unit Repair Manual, 4T40-E Section. Is the replacement complete? -- Go to Step 25 -- 24 Replace the PCM. Refer to PCM Replacement/Programming . Is the replacement complete? -- Go to Step 25 -- 25 In order to verify your repair, perform the following procedure: Select DTC. Select Clear Info. Operate the vehicle under the following conditions: - Place the transmission in Park. - Start the engine. - Idle the engine for 5 seconds. Select Specific DTC. Enter DTC P0753. Has the test run and passed? -- System OK Begin the diagnosis again. Go to Step 1

Check for power at the trans fuse. If no power, replace the ignition switch.

i just got a new ignition and my car will start and died and it wont shift gears

You need to do a relearn for the security system.

The following procedure allows for anyone to reprogram the Body Function Controller (BFC) Learned Data Code without any tools (other than the scan tool) when a new Ignition Switch is installed. The following is the auto learn procedure:

The Body Function Controller (BFC) will set the DTC 3031 Controller in learn mode when entering the reprogramming procedure.

Clear all DTCs
Turn the Ignition Switch to the START position.
The vehicle will start and then stall.
Turn the Ignition Switch to the RUN position until the THEFT SYSTEM indicator turns off (approximately 10 minutes ).
Turn the Ignition Switch to the OFF position and wait for 10 seconds , then turn the Ignition Switch back to the RUN position.
The Body Function Controller (BFC) will learn the new data on the next start attempt.


Note: This may work without the scan tool but you should use one.