New to the forum, but searching for answers on a 2007 Tahoe

[tbgrey2007]

2007 Chevy Tahoe developed an intermittent engine/tranny problem. The vehicle cranks and idles fine, but does not seem to respond to the throttle, rpms will not climb and vehicle lurches, like the throttle response is really delayed and limited. Local shop changed the throttle body and it ran fine. I picked it up and did not make it a 1/4 mile before it started again. Took it back and ended up putting in a remanufactured transmission. Vehicle has 230k so I figured that was coming. Picked it up, drove about 10 miles home, no problem. It sat for a day or two. I went to drive it and the same problem started again. Had the vehicle towed back to the shop and it ran fine on a test drive. Mechanic took it home and the next morning the problem started again (at least they see I'm not making it up). I checked the V4-V8 mode while it was misbehaving and it was show in V8 mode, so I don't think it is the AFM acting up. Shop has been looking at it for several days and seems to be stumped. Had a motor mount changed several weeks ago. Wondering if something could have gotten pinched during that process (wiring or a fuel line). Throttle position sensor checks out. I asked them to check the fuel pump and catalytic converter (maybe it is clogged up). No idea where to go from here. Thanks.

 

[Jibber]

We have had many 07-11 models and almost every time we pay to have the 4 cylinder lockdown turned off.

 

[WalleyeMikeIII]

2007 Chevy Tahoe developed an intermittent engine/tranny problem. The vehicle cranks and idles fine, but does not seem to respond to the throttle, rpms will not climb and vehicle lurches, like the throttle response is really delayed and limited. Local shop changed the throttle body and it ran fine. I picked it up and did not make it a 1/4 mile before it started again. Took it back and ended up putting in a remanufactured transmission. Vehicle has 230k so I figured that was coming. Picked it up, drove about 10 miles home, no problem. It sat for a day or two. I went to drive it and the same problem started again. Had the vehicle towed back to the shop and it ran fine on a test drive. Mechanic took it home and the next morning the problem started again (at least they see I'm not making it up). I checked the V4-V8 mode while it was misbehaving and it was show in V8 mode, so I don't think it is the AFM acting up. Shop has been looking at it for several days and seems to be stumped. Had a motor mount changed several weeks ago. Wondering if something could have gotten pinched during that process (wiring or a fuel line). Throttle position sensor checks out. I asked them to check the fuel pump and catalytic converter (maybe it is clogged up). No idea where to go from here. Thanks.

Might get better answers if you posted in the 2007-2014 Forum, vs. the 2021+, although lots of us have had that model too.

I had a 2013 w/ AFM, ran it 115k trouble free miles over 8.5 years:
Maintenance was oil changes about every 5k, rotated tires, bought brakes, a battery, transmission service every 50k, transfer case and differential service every 50k, 2 sets of tires, spark plugs/wires at 100k, Flush and Fill of the Radiator at 5 years.
Repairs were: One Magnaride Air Shock in the back at 45k, Replaced Air Compressor for Rear Leveler at 60K, Transmission cooler lines at 65K, Engine Oil Cooler Lines at 50k, Rear Axel Seals and Pinion Seal around 70K, Front Sway bar links around 80k

Other than that, was completely a pleasure to drive.
Note, I towed a 4000 lb boat for about 35k of those 100K miles.

 

[OR VietVet]

Welcome to the forum

 

[Fless]

Moved to correct year forum.

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

I cannot personally help you with your question; however, other members on this Forum that are much more knowledgeable than me will chime in.

 

[Plimbob]

tbGray - there is a sensor on the gas pedal which communicates with the throttle body may want to check into that. I have an 07 with 309k on it and replaced the TB at about 200k and it was still not responding well so I replaced the pedal sensor and ran fine thereafter. Also, maybe the cam position sensor is acting up?

Just a couple items to think about.

 

[OR VietVet]

Called an Accelerator Pedal Position Sensor.

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