freeman Posted July 29, 2008 Report Share Posted July 29, 2008 my check engine light came on when driving home along with "reduce engine power" message. after checking everything I started it back up and was able to drive it home, with the check engine light still on, stopped by autozone and got the codes read. All 3 codes were for the TAC Module. I found all the info fireman posted about it from a differnt thread, and plan on taking it to the dealership tomorrow. (btw thx fireman) What im wondering if anyone can tell me where this is at so I can check it, and also if anyone has had it replaced how long does it take? My truck is my DD and I gotta work. Im guessing the dealership is the only one that carries this part. Quote Link to comment Share on other sites More sharing options...
brobradh77 Posted July 30, 2008 Report Share Posted July 30, 2008 Its is on the firewall drivers side...little black box with a harness that plugs into it....I am looking for one ....Since i'm so modded i cant use my warranty...i wouldnt any way..I'll find one at a salvage yard or a parted out truck...the wires insude are prone to cracking i've been told and that probably what happened to you and me..P2101 and 2104 FTL Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted July 30, 2008 Report Share Posted July 30, 2008 I found all the info fireman posted about it from a differnt thread, and plan on taking it to the dealership tomorrow. (btw thx fireman) glad the info I provided helped you out, good luck with the fix Quote Link to comment Share on other sites More sharing options...
freeman Posted July 30, 2008 Author Report Share Posted July 30, 2008 took it in today, they called me and said I need a new TAC module and throttle body, with labor and everything it was about $900 Quote Link to comment Share on other sites More sharing options...
detjoe Posted July 30, 2008 Report Share Posted July 30, 2008 ouch! $900!!! did they warranty it? Quote Link to comment Share on other sites More sharing options...
freeman Posted July 30, 2008 Author Report Share Posted July 30, 2008 ouch! $900!!! did they warranty it? I guess not, because I asked him to check if it had a transferable warranty and he said he would. Quote Link to comment Share on other sites More sharing options...
brobradh77 Posted July 30, 2008 Report Share Posted July 30, 2008 Go to a junk yard....There was one for sale on here the other day for $125 shipped harness and all. Quote Link to comment Share on other sites More sharing options...
04CHASE Posted July 30, 2008 Report Share Posted July 30, 2008 if you ok'd that i feel ba dfor you the amount of labor involved is honestly less than 30 minutes and i can get the parts for about 200-300 max you can find some one selling an old tac that upgraded to the 90mm on pt.net and imo id bet your tb is fine. they are not known for going bad , only if they are improperly ported. , but those to you can find on the net for under 100 bucks. Quote Link to comment Share on other sites More sharing options...
freeman Posted July 30, 2008 Author Report Share Posted July 30, 2008 (edited) if you ok'd that i feel ba dfor youthe amount of labor involved is honestly less than 30 minutes and i can get the parts for about 200-300 max you can find some one selling an old tac that upgraded to the 90mm on pt.net and imo id bet your tb is fine. they are not known for going bad , only if they are improperly ported. , but those to you can find on the net for under 100 bucks. yea im not really sure, they said they thought it wasnt closing all the way when let off the throttle, whats pissed me off now is he told me theyve replaced the parts but the reduce engine power message followed by disengaging the throttle is still happening. they were suppose to be done with it today but they arent because they dont know whats going on. i let them go ahead and do it because i thought they would have it done by tonight because i needed my truck to get to work tonight Edited July 30, 2008 by freeman (see edit history) Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted July 31, 2008 Report Share Posted July 31, 2008 yea im not really sure, they said they thought it wasnt closing all the way when let off the throttle, whats pissed me off now is he told me theyve replaced the parts but the reduce engine power message followed by disengaging the throttle is still happening. they were suppose to be done with it today but they arent because they dont know whats going on. i let them go ahead and do it because i thought they would have it done by tonight because i needed my truck to get to work tonight Since these trucks are drive by wire, I don't think the TBs close all the way.....if you pull your intake off when the truck is not running, the blade in the TB is not closed all the way. Have you had any tuning work done lately?......sounds to me like there is a TP(throttle position) calibration issue......... Quote Link to comment Share on other sites More sharing options...
04CHASE Posted July 31, 2008 Report Share Posted July 31, 2008 another common problem with these trucks or gm trucks and suvs with this tb setup is one of the wires that plug into the tb will break , it however will not break the insulation just the copper inside so it will appear to be fine but the wire will not be making contact. you can pull back the convaltued tubing and e tape. it should have either 6 ot 8 wires. and the most common wire is either green or yellow . but start from the connector and slowly pull it from the connector and slide back firther on the wire. dont use alot of force to where it would pull i tout of the connector but enough to where it will break just the covering . it usually happened within 6-8 inches from the connector. this very well could be your problem it happened to my ss and a few others i have seen . the new pigtail is not cheap somewhere in the 65-80 dollar range and it comes with all white wires which is just not smart imo because it makes swapping htem a little tougher but if you do end up doing it use either solder or the non insulated crimp connectors with heat shrink . Quote Link to comment Share on other sites More sharing options...
freeman Posted July 31, 2008 Author Report Share Posted July 31, 2008 (edited) the truck is all stock. I didnt sign the repairs yet so Im gonna tell them to put the old one back on, definitely not worth $900. Edited July 31, 2008 by freeman (see edit history) Quote Link to comment Share on other sites More sharing options...
brobradh77 Posted July 31, 2008 Report Share Posted July 31, 2008 Freeman what were the codes thrown any way? do you know the numbers? Quote Link to comment Share on other sites More sharing options...
freeman Posted July 31, 2008 Author Report Share Posted July 31, 2008 (edited) Freeman what were the codes thrown any way? do you know the numbers? P1515 U0107 P2108 had them all read at autozone. all except the u0107 showed a TAC fault, autozone couldnt find anyting for the u0107 and I looked up the u0107 up on here and it was also a TAC problem. Edited July 31, 2008 by freeman (see edit history) Quote Link to comment Share on other sites More sharing options...
brobradh77 Posted July 31, 2008 Report Share Posted July 31, 2008 Interesting...my codes are p2101 and p2104 wich 2104 isnt even a code for the trucks..but i get both a few times a day.... Quote Link to comment Share on other sites More sharing options...
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