2004 GMC sierra 2wd
5.3 V8
Repairs = Haven't made any attempts at repair yet.
Asked a question here before
tech = mw
question = 2004 GMC Sierra 2wd 1/2 ton 4L60 trans. Transmission
shudders going from reverse to drive when cold. After it warms up some it
doesn't do it as bad if at all. It has started to slip in reverse and
forward gears, usually at slower speeds, around corners or starting uphill.
It was starting to act up prior to a filter and fluid change about
3,000 miles ago. The trans pan looked fairly normal as far as the amount of
clutch sediment for a 100k service interval. The fluid level is good
and no apparent or visible leaks. The fluid also smells/looks normal.
With the theft of my scanner, I have no means of pulling any diagnostic
codes out of it. Any ideas? Pretty frustrating. Never had any trouble
out of it before this.
MW:
Sounds like a possible problem in the forward accumulator in the valve
body. Possibly binding, or a seal has rolled.
Or a problem in the forward clutch or forward clutch piston.
There is also a service bulletin for a failed reaction sun shell, gear and or
bearing. But this usually will be a no reverse condition. Although the
problems you are having may be a pre-cursor to it failing.
Would need to be disassembled and inspected for these areas.
5.3 V8
Repairs = Haven't made any attempts at repair yet.
Asked a question here before
tech = mw
question = 2004 GMC Sierra 2wd 1/2 ton 4L60 trans. Transmission
shudders going from reverse to drive when cold. After it warms up some it
doesn't do it as bad if at all. It has started to slip in reverse and
forward gears, usually at slower speeds, around corners or starting uphill.
It was starting to act up prior to a filter and fluid change about
3,000 miles ago. The trans pan looked fairly normal as far as the amount of
clutch sediment for a 100k service interval. The fluid level is good
and no apparent or visible leaks. The fluid also smells/looks normal.
With the theft of my scanner, I have no means of pulling any diagnostic
codes out of it. Any ideas? Pretty frustrating. Never had any trouble
out of it before this.
MW:
Sounds like a possible problem in the forward accumulator in the valve
body. Possibly binding, or a seal has rolled.
Or a problem in the forward clutch or forward clutch piston.
There is also a service bulletin for a failed reaction sun shell, gear and or
bearing. But this usually will be a no reverse condition. Although the
problems you are having may be a pre-cursor to it failing.
Would need to be disassembled and inspected for these areas.
