BlueThunder58 Posted February 17, 2012 Report Share Posted February 17, 2012 so today, i filled my 2006 silverado z71 up with gas, and started my drive about half an hour out of the city to meet up with some friends. the transmission was running good, no high temps to worry about. i parked my truck for about 5 hours. started it up and i thought i had the parking break on. i didnt and kept driving. almost felt like converter is pooched. so i kept driving and about 10 minutes down the road, an engine light came on and my tranny went right to 3rd. and i didnt have my scan tool to check so i had to limp it home. i just called a buddy who is still where my truck was and said there was no fluid on the ground. Im almost possitive the converter went..since i had to keep the truck around 2800 rpm to do 100km(60mph) and when i let off the rpms just slowly started to go back down towards idle...and then i would almost have to feather it back up to 2800 rpm to start to get any forward momentum...its kinda hard for me to explain...but any ideas? anyone? thanks Ryan Quote Link to comment Share on other sites More sharing options...
BlueAKSSS Posted February 17, 2012 Report Share Posted February 17, 2012 I would start off by checking the codes since you got a CEL so something isn't right for sure. Does it still shift though the gears or was it acting like it was stuck in 3rd from a stop light? That would cause the feeling of having a bad torque converter I would imagine.... Report back with codes, also after writing them down clear them and see if it returns to normal. Quote Link to comment Share on other sites More sharing options...
BlueThunder58 Posted February 17, 2012 Author Report Share Posted February 17, 2012 (edited) ya thats what i figured too...my buddys allison behind his duramax did the same thing and went right into limp mode...ill write the codes down, report back and clear it just like you said and see what happens...looks like ill be gentle to it for a bit until i can save up for a new transmission...any suggestions? haha and yes it felt like it was stuck in 3rd... thanks ryan Edited February 17, 2012 by Willy (see edit history) Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted February 17, 2012 Report Share Posted February 17, 2012 If it is a torque convertor problem, driving it could take out the transmission. I had a convertor issue and it ended up taking the trans out with it. If it is I wouldnt drive it or you might be buying both. Quote Link to comment Share on other sites More sharing options...
Cramer Posted February 17, 2012 Report Share Posted February 17, 2012 Can you manually shift in 2nd and 3rd? If you can shift into only 2 and 3 and reverse, but no 1st or 4th, it is in limp mode due to a possible loss of electrical signal from the pcm. Check your trans fuses for being blown and your wiring connector going to the trans for being plugged in all the way. If they are ok it could be a stuck shift solenoid or vehicle speed sensor. Quote Link to comment Share on other sites More sharing options...
BlueThunder58 Posted February 18, 2012 Author Report Share Posted February 18, 2012 Can you manually shift in 2nd and 3rd? If you can shift into only 2 and 3 and reverse, but no 1st or 4th, it is in limp mode due to a possible loss of electrical signal from the pcm. Check your trans fuses for being blown and your wiring connector going to the trans for being plugged in all the way. If they are ok it could be a stuck shift solenoid or vehicle speed sensor. you are a hero right now! haha thanks by the way! ill run the codes on it tommorow morning and report back...currently moving some bails and fixing a fence. your info should save me from hours of heart ache Quote Link to comment Share on other sites More sharing options...
BlueThunder58 Posted February 18, 2012 Author Report Share Posted February 18, 2012 so i plugged in my code reader...holly codes. i got.. -P0753 shift solenoid A electrical -P0758 Shift solenoid B electrical -P0785 Shift/timing solenoid -P2761 Torque converter clutch pressure control solenoid control circuit/open -P0740 Tourque converter clutch solenoid circuit/open i ended up clearing them and now to trace the plugs/fuses that could be problematic Quote Link to comment Share on other sites More sharing options...
BlueThunder58 Posted February 21, 2012 Author Report Share Posted February 21, 2012 So...after many days of banging my head against the wall and relentless hours with a test meter in my street...i think i finally nailed it... I go to a trade school here in calgary, and they have a GM specific program. I walked into a class and talked to one of the instructors about my problem..he told me that its highly unlikley for all 5 solenoids to fail at once. that its most likely my ignition switch module. Since those solenoids get power from that ignition switch..same with my tail lights. (forgot to mention my buddy thought it was a good idea to cross the connections on my brand new led tail lights, as soon as i drove it after he did this..chaos insued) anyways he said by replacing that 81$ module that everything should go back to normal. and i should probly do a filter and fluid change anyways and just to check the A and B solenoids. any advice? also in the shop is a 2006 silverado ss intimidator...with 450km...got donated to the school from one of the dealers since it got a slight dent in the box during transport. sad it will never see the road Quote Link to comment Share on other sites More sharing options...
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