Eddie Posted December 17, 2013 Report Share Posted December 17, 2013 Here's the deal 2005 Silverado SS RWD. I was driving to the last truck meet cruising at 75mph. I started going up hill when I started slowing down. I tried to give it more gas and the engine rev-ed up. Eventually the truck slowed and would only do 30 mph in second gear. I drove it home. Slowly. The disconnected the battery for about 1 hr. Then the truck drove fine. I thought the problem was fixed. The next time I drove it it shifted fine thru the gears 1 time then repeated the 30 mph 2nd gear issue. Next, I changed the filter and oil. I also Ohm-ed all the solenoids, PSA, PCS, TCC, etc. Every thing checked good. The truck ran fine about 3-4 more time then started missing 3rd gear. If I got on it I could almost power thru and catch 4th gear. The whole time I kept scanning the truck, and it wasn't throwing any codes. So I went ahead and replaced the shift valves solenoids thinking may the coil opened up after it warmed up. The same thing repeated. Now the truck does 3rd-ish gear but will go up to 60 mph. I don't think it's the gears or clutches. I think its a other solenoid i.e. the control solenoid or maybe a grounding issue? I think I'll probably replace the control solenoid next. Any ideas? Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted December 17, 2013 Report Share Posted December 17, 2013 I would talk to a Trans shop, they would know and Im sure have heard of this before. It would sure beat throwing money at until its fixed. Quote Link to comment Share on other sites More sharing options...
Downeast Johnny Posted December 17, 2013 Report Share Posted December 17, 2013 What a head scratcher! Good luck man. Quote Link to comment Share on other sites More sharing options...
5752 Posted December 17, 2013 Report Share Posted December 17, 2013 (edited) I would talk to a Trans shop, they would know and Im sure have heard of this before. It would sure beat throwing money at until its fixed. I've been told a bad ignition switch may cause a loss of voltage to the transmission solenoid power supply circuit. But, don't throw your money away....talk to a tranny shop. Edited December 17, 2013 by TSA (see edit history) Quote Link to comment Share on other sites More sharing options...
AugustBurnsRed19 Posted December 17, 2013 Report Share Posted December 17, 2013 Mine was acting similar. Turned out to be the clutch packs and the sprag one more thing forgot what it was though. Your trans is more than likely coming out man. Quote Link to comment Share on other sites More sharing options...
2bfast Posted December 17, 2013 Report Share Posted December 17, 2013 Mine was acting similar. Turned out to be the clutch packs and the sprag one more thing forgot what it was though. Your trans is more than likely coming out man. If a sprag goes, it will only have manual low and reverse. This isnt a sprag issue Quote Link to comment Share on other sites More sharing options...
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