multiple codes only when slick or snowing

[blkvoy22]

so this winter is my first winter with my envoy 06 slt black on black, anyhow the last couple times it has snowed (basically last couple weeks) my check engine light has come on but shuts off after a day. Well today i finally caught it on and in time to get into advanced.

Now when light comes on it in 2wd with stabilitrac and traction control all on.. also at times when i park even if light is not on the idle becomes rough, but if i shut it off and turn back on it becomes normal again...?! Here is the list see what we can get figured out and possible solutions:

b0244
u1000
u1064
u1016
u1026
p0030
p0506
p0135


think i need to clean out some sensors and throttle body and that should take care of most of them but not sure... let me know thanks

[freddyboy61]

The "u" prefix codes are related to the serial data bus communications, you might have an intermittent connection somewhere.
B0244 is related to the ABS system and could be a wheel speed sensor going bad.
P0030 & P0135 are related to the heater circuit for the Oxygen sensor
P0506 is a low idle speed issue and cleaning the throttle body will probably get rid of that.

[08 trailb]

We can't stop here! This is BAT COUNTRY!

I got some of the same codes
C0455,C0196,U1064,U1017,U1026