05 Envoy TAC Module Location - GMTNation

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• Forums
• TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
• Technical Discussion

05 Envoy TAC Module location

• Thread starter Thread starter JohnScarfiJr
• Start date Start date May 12, 2019

J

JohnScarfiJr

Member Joined May 12, 2019 Posts 7 Location Clearwater,FL Would someone kindly inform me where the Throttle Actuator Control Module (TAC) is located? I own an 05 Envoy Denali 5.3 AWD. Have a replacement unit but can't locate that pesky sucker. Thanks in advance.

Mounce

Member Joined Mar 29, 2014 Posts 13,667 Location Tuscaloosa, AL Built into the electronic throttle body is it not? J

JohnScarfiJr

Member Joined May 12, 2019 Posts 7 Location Clearwater,FL

Mounce said: Built into the electronic throttle body is it not? Click to expand...

No sir a 4x3 box with two multi pin connectors.

Mooseman

Moderator

Moderator Joined Dec 4, 2011 Posts 27,057 Location Ottawa, ON Picture? And part number? Need GMT360/370 Service Manuals? Get them Here! Need Full Size Truck Service Manuals? Get them Here! FAQ Threads '02 TB EXT 4.2L '06 Saab 9-7x 5.3L '07 TB LS 4.2L '11 Caprice PPV 6.0L '08 Avalanche LTZ 6.0L 2021 Sierra Elevation 3.0L Duramax This site is funded by you! If you have saved some money from help you received, please consider becoming a supporter or donating. All proceeds go to supporting the site. Thank you! Better a little which is well done, than a great deal imperfectly - Plato J

JohnScarfiJr

Member Joined May 12, 2019 Posts 7 Location Clearwater,FL 2005 GMC ENVOY ACDelco Throttle Actuator Control Modules 12588923

Mooseman

Moderator

Moderator Joined Dec 4, 2011 Posts 27,057 Location Ottawa, ON That part is not for our platform at all.

ACDELCO 12588923 Throttle Control Actuator | Shop Now at RockAuto

ACDELCO Fuel & Air Parts and More for Your Vehicle at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty. www.rockauto.com Clicking on the part number brings up vehicle it's for:

CADILLAC	ESCALADE	2003-2005
CHEVROLET	AVALANCHE 1500	2003-2005
CHEVROLET	AVALANCHE 2500	2003-2005
CHEVROLET	SILVERADO 1500	2003-2005
CHEVROLET	SILVERADO 2500	2003-2005
CHEVROLET	SILVERADO 3500	2003-2005
CHEVROLET	SUBURBAN 1500	2003-2005
CHEVROLET	SUBURBAN 2500	2003-2005
CHEVROLET	TAHOE	2003-2005
GMC	SIERRA 1500	2003-2005
GMC	SIERRA 2500	2003-2005
GMC	SIERRA 3500	2003-2005
GMC	YUKON	2003-2005
GMC	YUKON XL 1500	2003-2005
GMC	YUKON XL 2500	2003-2005
HUMMER	H2	2003-2007

Need GMT360/370 Service Manuals? Get them Here! Need Full Size Truck Service Manuals? Get them Here! FAQ Threads '02 TB EXT 4.2L '06 Saab 9-7x 5.3L '07 TB LS 4.2L '11 Caprice PPV 6.0L '08 Avalanche LTZ 6.0L 2021 Sierra Elevation 3.0L Duramax This site is funded by you! If you have saved some money from help you received, please consider becoming a supporter or donating. All proceeds go to supporting the site. Thank you! Better a little which is well done, than a great deal imperfectly - Plato

Mounce

Member Joined Mar 29, 2014 Posts 13,667 Location Tuscaloosa, AL Ah yeah I know in the full size models that's right by the booster. And I know the 6cyl guys don't have it. But with you having the v8 I could see you having it like the full size. Should still be near the booster/fuse block though as they'd use a very similar harness layout.

Mooseman

Moderator

Moderator Joined Dec 4, 2011 Posts 27,057 Location Ottawa, ON AFAIK, nope. Not even the V8 on this platform according to that list. @JohnScarfiJr , did you get a code pointing to something in the throttle system? Need GMT360/370 Service Manuals? Get them Here! Need Full Size Truck Service Manuals? Get them Here! FAQ Threads '02 TB EXT 4.2L '06 Saab 9-7x 5.3L '07 TB LS 4.2L '11 Caprice PPV 6.0L '08 Avalanche LTZ 6.0L 2021 Sierra Elevation 3.0L Duramax This site is funded by you! If you have saved some money from help you received, please consider becoming a supporter or donating. All proceeds go to supporting the site. Thank you! Better a little which is well done, than a great deal imperfectly - Plato J

JohnScarfiJr

Member Joined May 12, 2019 Posts 7 Location Clearwater,FL Have repeatedly had a P2101 (TAC Module) out of range. A clearing of th the codes solves it for a week or so. Sourced the part through Summit Racing and it's listed there. As a V8 I think it should be the same as other applications ie., pickup truck. I will go to the local Dick Norris GMC dealership and get an answer. Let you all know. As a retired aircraft mechanic I seldom get a true challenge so off on a treasure hunt I go. Toodles! B

budwich

Member Joined Jun 16, 2013 Posts 2,325 Location kanata ... can't find any reference in GM si. Denali not really broken out... just motor options. None of which show any seperate module from the throttle body itself. picture of a tahoe shows it in the top right corner of the fire wall (looking at the engine). an actual picture of your particular motor / thottle body will likely clear up the issue quickly. Last edited: May 15, 2019 2008 TB 4.2l J

JohnScarfiJr

Member Joined May 12, 2019 Posts 7 Location Clearwater,FL First place I looked. B

budwich

Member Joined Jun 16, 2013 Posts 2,325 Location kanata "passing ships in the night".... no problem. If you post a picture of the throttle body on your truck, the forum will likely solve this for you. NOTE: the P2101 code doesn't actually mean you have a seperate TAC module from the throttle body. 2008 TB 4.2l

Mooseman

Moderator

Moderator Joined Dec 4, 2011 Posts 27,057 Location Ottawa, ON P2101 Throttle Actuator A Control Motor Circuit Range Performance Nothing about a TAC module. More an issue with the throttle motor, which is built into the throttle body itself. Need GMT360/370 Service Manuals? Get them Here! Need Full Size Truck Service Manuals? Get them Here! FAQ Threads '02 TB EXT 4.2L '06 Saab 9-7x 5.3L '07 TB LS 4.2L '11 Caprice PPV 6.0L '08 Avalanche LTZ 6.0L 2021 Sierra Elevation 3.0L Duramax This site is funded by you! If you have saved some money from help you received, please consider becoming a supporter or donating. All proceeds go to supporting the site. Thank you! Better a little which is well done, than a great deal imperfectly - Plato

• 

Reactions: Mounce

Reprise

Lifetime VIP Donor Supporting Donor Member Joined Jul 22, 2015 Posts 2,724 Rock lists it for the '03-'04, with same picture. BUT - when I search Google images (5.3, year irrespective), everything points to the throttle body. Here's the part listing from Rock:

BUICK	RAINIER	2004
CHEVROLET	SSR	2003-2004
CHEVROLET	TRAILBLAZER	2003-2004
GMC	ENVOY	2003-2004
ISUZU	ASCENDER	2003-2004

I will take a look later today, when I'm near my Voy. From the pics I see on Rock, I'm guessing it's an 'outside' part (e.g.; somewhere in the engine compartment). But that's ONLY a guess. Will post back later. '03 Envoy XL 5.3 w/ 3.73; '03 Sierra 1500HD Quadrasteer w/ 4.10 & Traction Ctrl (1 of 237 made) Did you get an issue resolved, your GMT back on the road, or save by using this site? Consider purchasing a supporting membership - if you saved a trip to a dealership / garage, you're already money ahead! ALL proceeds go ONLY to maintaining the website. Tech2 owner, covering N. IL / S. WI areas. "Good judgement comes from experience. Experience comes from bad judgement."

Reprise

Lifetime VIP Donor Supporting Donor Member Joined Jul 22, 2015 Posts 2,724 Think I found it. Look over at your brake booster, up / to the right, under the cowl (about '1 o'clock') I'll post pics later (directly from my phone would be ginormous) '03 Envoy XL 5.3 w/ 3.73; '03 Sierra 1500HD Quadrasteer w/ 4.10 & Traction Ctrl (1 of 237 made) Did you get an issue resolved, your GMT back on the road, or save by using this site? Consider purchasing a supporting membership - if you saved a trip to a dealership / garage, you're already money ahead! ALL proceeds go ONLY to maintaining the website. Tech2 owner, covering N. IL / S. WI areas. "Good judgement comes from experience. Experience comes from bad judgement." J

JohnScarfiJr

Member Joined May 12, 2019 Posts 7 Location Clearwater,FL Here is the TB. No good on the booster area. Again it's a 5.3 AWD Denali

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Mooseman

Moderator

Moderator Joined Dec 4, 2011 Posts 27,057 Location Ottawa, ON I may have found something however may not help. Looking at GMPartsDirect, I found this: But man that looks a LOT like a PCM. Need GMT360/370 Service Manuals? Get them Here! Need Full Size Truck Service Manuals? Get them Here! FAQ Threads '02 TB EXT 4.2L '06 Saab 9-7x 5.3L '07 TB LS 4.2L '11 Caprice PPV 6.0L '08 Avalanche LTZ 6.0L 2021 Sierra Elevation 3.0L Duramax This site is funded by you! If you have saved some money from help you received, please consider becoming a supporter or donating. All proceeds go to supporting the site. Thank you! Better a little which is well done, than a great deal imperfectly - Plato B

budwich

Member Joined Jun 16, 2013 Posts 2,325 Location kanata

JohnScarfiJr said: Here is the TB. No good on the booster area. Again it's a 5.3 AWD Denali Click to expand...

while the throttle body looks like the "normal" throttle actuated control motor system. I doubt there is another seperate module. Just follow the cable leave the throttle body and see where it goes... most likely to the PCM. where is your pcm mounted? Last edited: May 15, 2019 2008 TB 4.2l

Reprise

Lifetime VIP Donor Supporting Donor Member Joined Jul 22, 2015 Posts 2,724

JohnScarfiJr said: Here is the TB. No good on the booster area. Again it's a 5.3 AWD Denali Click to expand...

Well, I don't have the fancy-pants Denali, but my '03 XL *is* a 5.3, friend. That's why I jumped in the post. Anyway, here's what mine looks like...and it looks like they changed things up in '05, based on your pics. Oh, and gentle admonishment... it should be a 4WD, not an AWD. If you want me to snap my TB, let me know (sorry it's not visible in the wide shot) (only the one plug is visible here, but there's a second one behind it - I checked.) On edit: Quoth @Mooseman - 'But man that looks a LOT like a PCM.' It is...there are two part #4's listed, same 8-digit part #. I guess what they're trying to show is that the TAC is integrated (?) into the PCM -? GM doesn't usually list parts that way, though. Last edited: May 15, 2019 '03 Envoy XL 5.3 w/ 3.73; '03 Sierra 1500HD Quadrasteer w/ 4.10 & Traction Ctrl (1 of 237 made) Did you get an issue resolved, your GMT back on the road, or save by using this site? Consider purchasing a supporting membership - if you saved a trip to a dealership / garage, you're already money ahead! ALL proceeds go ONLY to maintaining the website. Tech2 owner, covering N. IL / S. WI areas. "Good judgement comes from experience. Experience comes from bad judgement." J

JohnScarfiJr

Member Joined May 12, 2019 Posts 7 Location Clearwater,FL That's it and as you can see mine isn't situated there....sigh. Thanks however.

Reprise

Lifetime VIP Donor Supporting Donor Member Joined Jul 22, 2015 Posts 2,724 NP. FWIW, I don't think it's a case of 'yours being located somewhere else', but rather 'the '05-up don't have them' (external modules) '03 Envoy XL 5.3 w/ 3.73; '03 Sierra 1500HD Quadrasteer w/ 4.10 & Traction Ctrl (1 of 237 made) Did you get an issue resolved, your GMT back on the road, or save by using this site? Consider purchasing a supporting membership - if you saved a trip to a dealership / garage, you're already money ahead! ALL proceeds go ONLY to maintaining the website. Tech2 owner, covering N. IL / S. WI areas. "Good judgement comes from experience. Experience comes from bad judgement."

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Reactions: Mooseman

littleblazer

Member Joined Jul 6, 2014 Posts 9,274 Iirc the 360 platform adopted things as test runs before the rest of the lineup got it. (Side curtain air bags, auto diming mirrors etc.) The 07+ full size trucks have the module integrated and I would believe the same goes for your 05. "By perseverance, study, and eternal desire, any man can become great." - GENERAL GEORGE S. PATTON "You write your own book, and what does the next page say?"-Myself Oh no.... I've.... caught.... the.... mod.... bug.... Sometimes I drive an envoy. Miles: 181,000 The build/mod thread: Situation normal, for now.... You must log in or register to reply here. Share: Facebook Bluesky LinkedIn Reddit Pinterest Tumblr WhatsApp Email Share Link

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