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Thread: Won't shift when cold out.
12-22-2009, 10:58 PM #1
- Join Date
- Oct 2009
Won't shift when cold out.
Now that it's gotten colder outside, my 2000 Silverado has been shifting differently. Up until now, it always shifted at normal RPMs. Now, it shifts at a normal RPM from 1-2, but it will hold 2 and 3 up to a much higher than normal RPM before shifting.
In the morning, I start out on a 25mph road and it will stay in 2nd gear up to 30mph (2500-3000rpm I think) and never shift. Even when I let off of the gas when I get up to a red light, it will stay in 2nd and actually engine brake like a manual.
It only does this when it is below about 20 degrees out. When I leave work, it shifts normally as it usually warmer outside by then. And if I hit a warm morning it will be fine also. It's got a 5.3 with the AutoTrak 4wd if that matters. Anyone else experiencing this? Of do I have a problem?
12-23-2009, 12:40 PM #2
That's probably normal operation but to be on the safe side get your PCM scanned for trouble codesJim
2004 SILVERADO 2500HD LS
Pro Comp Leveling Kit
285-75-16 Cooper ST All Terrains
Pro Comp Programmer
Linux Bed Liner
1967 Landcruiser <350 Chevy>
1990 Geo Metro Convertible
2007 FJ Cruiser
12-23-2009, 01:14 PM #3
yeah it will rev at higher rpm to keep the fluids warm and flowing smoothly. unless you get a engine light or anything like that i wouldnt worry. 20 degrees out is freaking cold. im in souther cali and originally from florida so i never encountered anything like that.1997 K1500 Silverado 4X4. Black Exterior, grey/black interior. 35X12.50X15 wheels and rubber, ProComp 6inch lift 6 shocks in the front 2 in the rear, 3 inch body lift, a few cosmetic mods. Nothing major. Custom leather interior, and stereo upgrade is the future mods.
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