Eschroth

Same issue on 2008 silverado 1500. Dealer said wrong code 2138. Now won't duplicate so won't fix. I got stranded twice with same symptoms

Bettychick23456

How did you pm her?

Sal71

On Saturday my 2010 Tahoe had the engine light come on. The error code was P0121, throttle system control not reading quite right is what on-star told me. Truck didn't seem to drive differently. I turned my tahoe on after being shut off at home for 4 hours and the light was gone. Diagnostics ran and came up clean. Has this happened to anyone? Should I just replace my TPS? I found info on a recall of this product but my vin doesn't show being covered. Is this a hard DIY fix?

titantn24

Had this happen on my 2007 Suburban LTZ. Began back in November of 2013. Would come and go intermittently over the course of a year or so until it finally stayed on for good. Truck never ran differently, but wife hated not being able to use remote start because the engine light was on. Finally fixed it the other day. Check my posts here: https://chevroletforum.com/forum/tah...e-39344/page4/ Should cover everything. Cheers!

jpatterson0201

I've been having this same problem with my 2007 Chevy Malibu since May 2014. I don't understand if this is a common problem why are they not doing a recall on ALL VIN#s? I just took my car in yesterday to get a quote & it's crazy.

Rickgonzalez09

I have a 2010 gmc sierra sle with 33k miles and current date today is 02/26/2015. Bumper to bumper expired and possibly the power train warranty also. Wife drove my pickup today and called saying traction control light, stabilitrak, reduce engine speed and check engine light all came on as she's leaving work going 5 mph. Today was extremely cold around 22° and 5° with wind chill. All lights came on and wouldn't let her go passed 20mph. I came home from work and hooked scan tool up reading code p2135 which means throttle body sensor A/b voltage correlation. Only check engine light was on but truck ran fine. Drove normally came home then I cleared the code and restarted it drove it for about 15 minutes alternating speeds never came back on. Of course the question is does warranty cover being the 5 year power train is about expired or is even though it only has 33k miles. General Motors posted a "Special Coverage Adjustment" for the throttle position sensor for a 10yr/120,000 miles from original service date. Also the throttle body itself is actually covered under the 7 year/70,000 California emission control system warranty. Hope this helps someone

snoxman16

same happened to me, i pulled over shut my truck off for 5 mins and started it back up and all lights were gone. 5 miles later it did it again, same code as you. I have a 2011 chevy silverado, I called the local chevy dealer and there is a recall on it.

Thissenx2

2011 with 84xxx miles. Getting service stabilitrack and traction control off lights....then =rough idle!!
Can someone provide me with recall bulletins or #s so I can show my dealership to look up?

in2pro

Welcome to the forum...

If there is any service bulletins related to your particular issue, the service department will be able to make that determination once the cause is identified.
The stabilitrac error can cover a myriad of issues from something simple as a loose wheel speed sensor connector to a failed and collapsed lifter...
There is no blanket bulletin to the best of my knowledge, you will need to take it in and have the problem diagnosed and go from there..

Jobryhar

I called my local GMC and they said they only do full throttle replacements, not replacement of just the sensor kit. Is there some confirmation from GMC not to replace the whole throttle only the kit as I don't think my dealer would take suggestions from a forum without some sort of GMC validity. It costs $525 for full replacement! Thanks

QUOTE=MDTAHOE;241455]They were lying to you p2135 and reduced engine light are the exact symptoms for the code. Here is a copy of the service bulletin however if you have over 100,000 or past 5 years I do not think your covered.

Bulletin No.: 11-06-04-007B

Date: April 16, 2012

Subject: Diagnosis and Repair - Malfunction Indicator Lamp (MIL) Illuminated, Reduced Engine Power Message Displayed, DTC P2135 Set

Models:
2008-2011 Cadillac Escalade, Escalade ESV, Escalade EXT
2009-2011 Cadillac Escalade Two-Mode Hybrid
2008-2009 Chevrolet TrailBlazer
2008-2011 Chevrolet Avalanche, Colorado, Express, Silverado, Suburban, Tahoe
2008-2011 Chevrolet Tahoe Two-Mode Hybrid
2009-2011 Chevrolet Silverado Two-Mode Hybrid
2008-2009 GMC Envoy
2008-2011 GMC Canyon, Savana, Sierra, Sierra Denali, Yukon, Yukon Denali, Yukon XL, Yukon XL Denali
2008-2011 GMC Yukon Two-Mode Hybrid
2009-2011 GMC Sierra Two-Mode Hybrid
2008-2009 HUMMER H2
2008-2010 HUMMER H3
Equipped with Engine RPO LFA, LY2, L20, LMG, LC9, LH6, LMF, LH8, LH9, L76, LS2, LY5, LY6, L92, L96, LZ1, L94 or L9H

Attention:
If a vehicle is encountered with this condition, DO NOT replace the throttle body. Instead follow this procedure below. Model Year 2008-2010 vehicles MUST have the engine control module (ECM) reprogrammed with the latest software calibration as indicated in Step 35 of the procedure AFTER the installation of the throttle position (TP) sensor cover. Model Year 2011 vehicles DO NOT need to have the ECM reprogrammed.
Supercede:
This bulletin is being revised to add California Emission Coverage to the Warranty Information. Please discard Corporate Bulletin Number 11-06-04-007A (Section 06 - Engine/Propulsion System).
Condition

Some customers may comment on an illuminated malfunction indicator lamp (MIL), with a Reduced Engine Power message displayed.

The technician may observe on a scan tool DTC P2135: Throttle Position (TP) Sensor 1-2 Correlation set as Current or in History.

Cause

This condition may be caused by the difference between the TP Sensor 1 and TP Sensor 2 exceeding a calibrated value for more than 2 seconds.

Part Information

Important
The initial inventory for P/N 19259452 (Sensor Kit) will be distributed via RIM through a special stocking policy. The dealership parts department personnel will need to approve the stocking policy in order to receive the initial shipment. Subsequent replenishment will also be via RIM. If the parts department is out of inventory of P/N 19259452 (Sensor Kit), then to complete the repair utilize the throttle body assembly.


Warranty Information

- For 2008-2009 vehicles repaired under the 5 year/100,000 mile (160,000 km) Powertrain Coverage (Code P) warranty, use:
- For 2010-2011 Cadillac vehicles repaired under the 4 year/50,000 mile (80,000 km) Bumper-to-Bumper warranty (in Canada, Base Warranty Coverage), use:
- For 2010-2011 Chevrolet, GMC or HUMMER vehicles repaired under the 3 year/36,000 mile (60,000 km) Bumper-to-Bumper warranty (in Canada, Base Warranty Coverage), use:


- For 2010-2011 Chevrolet, GMC or HUMMER vehicles repaired under the 3 year/50,000 mile (80,000 km) California Emission Coverage (Code E) warranty, use:[/QUOTE]