help!! throttle control malfunction/power failure/traction control problem

[Hummer eh!]

gas is always a concern up here, but why would the error show up after i was already driving and disappear after i turned it off? in better weather i'd take it for a drive and try a cpl things, but right now if the vehicle fails, i'll freeze my you know whats off.

[Hummer eh!]

onstar gave me the diagnostic codes:
as of now:
P1516
P2101
P2119

[algy]

Here is a link to the Diagnostics Trouble Codes:

http://www.hummeranswers.com/files/DTC_File_H3.htm

[algy]

P1516: Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance

P2101: Throttle Actuator Position Performance

P2119: Throttle Closed Position Performance

[Hummer eh!]

thanks algy
earlier today there were 3 separate issues, now it's just down to the throttle control i guess. i will continue my online search. some say i can drive it, others say no because it may go into reduced power mode again and then shut down. guess it's time to call the rental car companies. i'm very interested in finding out the how and why of this problem, time will tell.

[pdsq99f4]

Sounds like you had some moisture in your throttle body that froze and TAC motor had trouble moving the throttle. Not sure how to remedy the problem at -30c. That's freakin cold!!

[Hummer eh!]

with the weather the way it is, i had to wait a cpl days for a tow truck and the dealership is dealing with it now. unfortunately, also due to the weather the only info i've got from the dealership is that they have my vehicle and they're working on it. i was able to find alot of good info on the net so i decided not to drive it anymore as the module freezing may have destroyed it, or it may thaw out and be great again. my desire not to be stranded beat out the ego on this one.

[justforfun]

Originally Posted by Hummer eh!

thanks algy
earlier today there were 3 separate issues, now it's just down to the throttle control i guess. i will continue my online search. some say i can drive it, others say no because it may go into reduced power mode again and then shut down. guess it's time to call the rental car companies. i'm very interested in finding out the how and why of this problem, time will tell.

It's under warranty, so take it to the people that "know" - your dealer (once the roads are clear mind you).

Do NOT rent a car.... that's what your dealer is there for - your truck ain't working, they fix it and give you a loaner... probably just a sensor issue - let us know how it goes!

Cheers
JFF

[Hummer eh!]

got it fixed. it seems that due to the cold the sensors went a little wacky and they ended up rhaving to reprogramm the engine control module, which there is a service bulletin for. they also replaced an onstar battery, not sure what that is but apparently that's why i got so many diagnostic codes and error display messages. that made sense, as my check engine light came on and off quite frequently over the past 6 months. they also had to replace the throttle body and associated connectors, which i have read dysfunction due to vibration (driving through snow drifts/banks like a teenager) and due to extreme temperature changes. anyway, once they did all of that, she's good as new. and apparently should have a better idle.
as far as the loaner car, not up here. they use rental car agencies instead of having their own loaners and they'll only pay for the rental car when they're actually turning wrenches on your vehicle. so for me that meant my car was out for 8 days, but since they only worked on it for one day, they only cover one day of the rental.
since they are the only hummer approved service center in our city, the h3 will be replaced this summer. now comes the tough decision of what to drive next. my choices won't prob be popular on this site, but i'll let you know anyway. tahoe/yukon, cayenne s, range rover sport.

thanks for all your help