1998 4.3l chevrolet truck.auto transmission started slipping.
It gave no warning. slips in every gear. is due for recommended scheduled service.fluid level is fine. color and smell seem fine too.thought I'd try fluid filter change first, but don't know what transmission it has or the capacity. (lost owners manual)it's the basic model Cheyenne.is this worth a shot or am I wasting my time and putting off the inevitable rebuild?
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Re: 1998 4.3l chevrolet truck.auto transmission started...
Myself I would give the fluid filter change a shot.
If the fluid still looks good then most likely you haven't smoked any clutches. It could just be the filter is clogged and not picking up fluid properly.
Of course it is possible that it is something more serious.
Parts store should be able to hook you up with correct filter and probably capacity.
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check transmission fluid level when hot,engine running in neutral.fluid should be reddish in color,should not smell burnt. trans fluid & filter should be replaced at +/- 100k miles. possibly transmission shift solenoid.
Yes the transmission is serviceable. Let the engine warm up and then check your fluid level. If the fluid is dark, smells burnt, or feels gritty you should change the fluid and filter. Sounds like a clogged filter making first gear slip. Watch your tach and see if it revs high on take off this will show if you are slipping in first gear.
Check the condition of the fluid. After running the car for 20 minutes, leave it running and check the fluid level. if the level is low, try adding a small amount. Fluid expands at temperature so don't overfill. If the fluid level is okay, check the condition - it should be bright red and not smell burnt. If it leaves a dark streak on a light colored rag or towel, you should change the fluid and have the filter cleaned.
Automatic overdrive and/or torque converter failure. Properly check your trans. fluid level. Might be as simple as that. It should be at proper level, and red in color. Hopefully all you need is a tranny fluid exchange service....do the filter as well. Hope this is helpful.
With the limited information you provided, it would be a good idea to bring your Envoy to a transmission shop for analysis. Most general repair shops and even many dealers do not do this work because it is so specialized. Bringing it directly to a transmission shop yourself will save the "mark up" charged by general repair shops.
You can expect problems with the transmission if you do not have it serviced regularly. Problems can be intensified if you pull a trailer, drive in hot, dusty areas, or do a lot of stop and go driving and do not perform the scheduled maintenance.
Sometimes, low fluid level can be a source of the problem and other times a change of fluid can solve the problem - but not as often as one would hope. Check the fluid level on the dipstick. Add enough fluid to bring it to the correct level. The fluid should be pinkish/red in color, but will likely be darker if it has been in for a long time. Regardless of color, the fluid should not smell burnt. An improperly shifting / slipping transmission coupled with burnt smelling fluid is an indicator of a potential expensive transmission rebuild on the horizon.
sorry to tell you i dont think its a sensor. but i think the transmission will need a rebuild. write me a mesg and let me know how many miles it has on it and also smell the tranny fluid and see if it has a pundgent smell
Just because the tranny fluid is full doesn't really mean that much. More importantly, what does it look and smell like? The recommended interval for trans service is 30,000 miles. It is important that this be done every time. The reason is that the tranny fluid pan has a filter inside. As the fluid loses its viscosity it loses its ability to lubricate. Once this begins to take place the heat and wear inside the transmission increase and can do so very quickly. If there is excessive wear then when you perform the service you will find metallic shavings in the bottom of the pan and in the fluid. If the fluid is not a brighter shade of red, or if it is more of a rust looking color then I would say have it serviced asap. If it smells burnt then that is another warning sign. But I would definitely have it serviced, not just draining and refilling the fluid. But filter, pan gasket and bolts as well. If the fluid looks good and doesn't smell burnt, then it could likely be a shift solenoid type issue. But you would have to have that diagnosed at a shop that has a Consult type computer to check for codes in the TCM.