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89 Chevy Silverado issues.

  • wacoeagle
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03 Mar 2019 02:16 #27541 by wacoeagle
Replied by wacoeagle on topic 89 Chevy Silverado issues.
The reason I thought the Engine ecm may be a learning or (adaptive), computer is that the 4l60E transmission is an adaptive transmission system. I think the module inside the transmission may handle this. The transmission monitors the shift conditions, and parameters and tries to duplicate your driving habits. I drive like slow poke gonzales, (speedys cousin), and I can hardly feel it when my transmission shifts. If I drove aggressive and had the rpms up every time it shifted, the transmission would tend to want to shift in that manner.

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03 Mar 2019 13:42 #27555 by Rockyroad
Replied by Rockyroad on topic 89 Chevy Silverado issues.
Your 94’ will learn, the 89’ will not. The 94’ has a few more things in the puter not just the prom. I don’t think the trans went electronic control till about 92’ish. It uses the engine calibrations in combination to know when to shift. Using tps,map, vehicle speed etc. it’s all housed in the ecm,but called pcm as now it controls the powertrain and not just the engine. I through a cb in my 93’ to take a road trip. I just quickly tapped into a 10 amp fuse I believe said cig lighter,well I popped it. The trans was stuck in second, thought I blew the trans. Everything else was fine,I didn’t realize at the time my cb wasn’t working either. It wasn’t till after several hours of dicking around I wanted to at least fix something and changed the fuse and whala,back on the road.

Someday I'll figure this out

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03 Mar 2019 14:50 #27557 by wacoeagle
Replied by wacoeagle on topic 89 Chevy Silverado issues.
good to know, good way to determine what is controlled by what its called, ECM or PCM.,
got a drip coming from rear main seal, have u ever tried a product called AT-205 RESEAL BY ATP.. It has a 4.5 star rating and scotty kilmer said he used it with good results for 20 years. I was told that the clutch was replaced before I got the truck, from the guy I got the truck from but people lie so much Its hard to believe anything anymore, . I couldnt imagine not replacing the rear main when they had the manual tranny off, but hey , its 2019 . im hoping it got a little shrunk from sitting likely a year 0r more. anyone who doesnt change a 10.00 seal that takes 2 minutes or less when they have the transmission out would be amazing to me, I will try the stuff and report how it works. had neck surgery in jan and surely cant be pulling the transmission on it for a while.
also anyone who does a rear brake job, DO NOT use brake best hardware kit, the e clips that hold the E BRAKE lever onto the shoe is defective., Im fixing it permanently, I drilled a small hole thru the pin, pushed it brake pad and lever, put washer on other side, and small cotter pin in. a roll pin could be used as well. what happens is that E CLIP comes off, or breaks, then pin pops out, falls into brake hub, and the E brakes dont work anymore.

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03 Mar 2019 15:20 #27562 by Rockyroad
Replied by Rockyroad on topic 89 Chevy Silverado issues.
I’ve never used at205. I’ve seen plenty of people that “know what there doing” destroy new parts including lots of seals. Even after 6yrs of vocational high school and college specific automotive and heavy equipment knowledge and even a year at mmi for motorsports stuff,I can still get in a rush or be absent minded or sidetracked and ruin a good part, talk about something that really Pisses me off.
I believe those e-clips aren’t like real e-clips, there meant to be bent manually together at the open end to secure it.

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03 Mar 2019 18:02 #27567 by wacoeagle
Replied by wacoeagle on topic 89 Chevy Silverado issues.
the E clips that came with the kit both snapped, like they were made out of the wrong type of metal, I had to go buy a generic e clip Kit, and those failed too, the E clip should have spring to it, and it didnt at all it just broke while trying to push it onto the pin groove. Alot of force pulls down on that Ebrake arm, im amazed the eclips are even used at all, as there is some side to side force being applied as well as up and down. with the hole and the cotter pin in it now, its not going to come off again until I take it off. with the truck being standard, the e brake gets used alot, so it should stay fixed now.

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03 Mar 2019 18:09 #27568 by wacoeagle
Replied by wacoeagle on topic 89 Chevy Silverado issues.
They are C clips,, Cheap Chinese junk!!!! ha you cannot even take for granted that small hardware items are of any quality anymore.. , I also doubt the chinese care even less abt what they send here, with the trade war going on,., they dont give a rats SS if it works or not or abt safety.

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