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Chevrolet Camaro: , I'm Henry from Germany. here is a 1999…

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Hi, I'm Henry from Germany...
Hi, I'm Henry from Germany. here is a 1999 Chevy Camaro 3.8 V6 with DTC P1221. we allready change the Throttle body but the DTC is the same. GM service bulletin checked and all seems to be right. where could be the mistake?
Submitted: 3 years ago.Category: UK Car
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Answered in 7 hours by:
6/10/2015
UK Auto Mechanic: Dan, Technician replied 3 years ago
Dan
Dan, Technician
Category: UK Car
Satisfied Customers: 25,965
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
Verified

Hello, my name is***** can only mean throttle body, wiring, or throttle control module. So next step is checking wire between throttle body and module, each wire should have under 5 ohms resistance. If all are good replace the module. Here is a wire diagram to help with testing. Let me know if you have more questions, thanks.

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https://www.dropbox.com/s/86j1tok4lb4hwt7/wdtb.png?dl=0

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Customer reply replied 3 years ago

Dan thanks for you reply. will check that. I think this wiring is allready here. will inform you soonest. but I think our mechaninc tested allredy all wire. BTW the DTC is only sometimes possible to delete.

does I need the new throttle body to activate or learn?

UK Auto Mechanic: Dan, Technician replied 3 years ago
The face DTC is only sometimes possible to delete points toward intermittent wiring problem. There is no relearn that needs to be done. I'm not sure how he checked wiring but if he is sure wiring is good that leaves module as only possibility but I still think wiring is the problem. Let me know how it goes or if you run into questions, thanks.
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Customer reply replied 3 years ago

Okay will do, but today all mechanics are off. we allready closed. 6:15PM

tomorrow. you have a email? my is hentzschel70gmail.com

UK Auto Mechanic: Dan, Technician replied 3 years ago
I'm not able to email but you can come back to this website and reply with more questions at any time without additional fees. Let me know how it goes, thanks!
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Customer reply replied 3 years ago

Dan

how I sayd, the wiring is good. we doublecheck it and every wire is about 2,5 Ohm.

now is the only possibilty the accelerator module!? its only possible to buy direct at GM?

UK Auto Mechanic: Dan, Technician replied 3 years ago
Yes you will need to buy directly from GM or get a used vehicle. If wiring is good then the module is the only possible problem. Let me know how it goes, thanks.
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Customer reply replied 3 years ago

ordered allready!

but need some days, also shipping to Germany!

will send you an reply soonest.

UK Auto Mechanic: Dan, Technician replied 3 years ago

Sounds good, thanks.

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