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gmc sonoma tranny problems Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Truck Repair>> Truck Repair Advice n_webb08 New User Feb 9, 2012, 5:57 PM Post #1 of 4 (6455 views) gmc sonoma tranny problems Sign In i have a 2000 gmc sonoma 2.2L automatic and it has around 171,000 miles on it thats starting to have some transmission problems. i notice about 3 weeks after i got it that after i would be driving it for a good while that shifting from 1st to 2nd it would jerk alittle. not a big jerk but you could notice it if you paid attention. i checked codes on it and it had a transmission component slipping code. well i dont rip on it that hard and it wasnt that bad so i figured it wasnt a big deal. well i started my college classes again this past week which i have to drive on the interstate to get there. so after driving about 45 minutes i noticed that all asudden i was going from driving 65 mph with my rpm between 2500 to 3000 to driving 65 mph with my rpm 3500 to 4000 kinda like overdrive went out or something. im thinking that my trannys getting overheated but idk. fluids good in it. if anyone has any hints please tell me. im hoping it wont be a major repair. Discretesignals Ultimate Carjunky / Moderator Feb 9, 2012, 6:11 PM Post #2 of 4 (6442 views) Re: gmc sonoma tranny problems Sign In What was the code number? What is the condition and level of the fluid in the transmission? Slip codes aren't a good thing and could mean burnt clutches or bands. You'll probably have to swing into a transmission shop and have them diagnose it. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved. n_webb08 New User Feb 9, 2012, 6:22 PM Post #3 of 4 (6432 views) Re: gmc sonoma tranny problems Sign In i think it was p1870. its not really the slipping im worried about its not really that bad even though it still isnt a good thing. but i mean if thats possibly the cause of my problem then idk. Discretesignals Ultimate Carjunky / Moderator Feb 9, 2012, 6:50 PM Post #4 of 4 (6419 views) Re: gmc sonoma tranny problems Sign In p1870 means the PCM is seeing that the torque converter is slipping. When this happens the PCM goes full line pressure, unlocks the converter, and can take the transmission out of 4th gear if it sees the fluid temperature getting too high. You should drop the pan and check for bronze in the bottom of the pan. The stator shaft bushing is bronze and could be allowing pressure to bleed out causing the torque converter clutch to slip. You should take it into a trans shop and have them check it out. The slippage going on can overheat the fluid and take out the rest of the clutches in the tranny if you keep driving it that way. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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