Question about 2006 Chevrolet Trailblazer Ext

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Trailblazer help codes po60e po121 p2135 has new pcm with updates new tb has reduced power any info

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: p2135 code reduced power light

Thats a throttle body code p2135 that and p2101 unfortanatly are saying that the whole throttle body needs to be replaced do to an electronic malfuntion that is not a serviceable part or sensor.

Posted on Jan 04, 2011

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SOURCE: i have a 04 hd2500

try wiggling the wires in the accelorator sensor connector.sometimes the wires break inside the insulation and it is real hard to find.they usually break from 1 to 4 inches from the connector.if you dont find the problem there i would disconnect the computer and see if there is corrosion in the connectors.i have seen this happen to.hope this helps.good luck.

Posted on Mar 30, 2011

  • 560 Answers

SOURCE: code p1221 on 2002 Chevy Trailblazer

its drive by wire system you need a new throtlebody/ acuator

Posted on Jun 15, 2012

skychief2001
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SOURCE: engine won't start and shows trouble code P1516 and reduced engine power light is on

Here is the definition of the code.

Possible causes - Faulty Throttle Actuator Control (TAC) module
- Throttle Actuator Control (TAC) module harness is open or shorted
- Throttle Actuator Control (TAC) module circuit poor electrical connection (loose or broken wires)

P1516 CHEVROLET Description The Throttle Actuator Control (TAC) module contains data which is essential for proper TAC operation. The TAC module continuously test the integrity of this data. When the TAC module is unable to write or read data to and from Random Access Memory (RAM), or the TAC module is unable to correctly read data from the flash memory or and internal TAC module processor fault is detected and the Detected Trouble Code (DTC) is set.
Read more: http://engine-codes.com/p1516_chevrolet.html#ixzz286Gl3cSo

Posted on Oct 02, 2012

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I have a 2004 gmc envoy. I have replaced the throttle body and all sparks plug or core packs . Now I have a reduce power engine Light that comes on when it wants to when it comes on you have no power


Do you know what drive by wire is ? electronic throttle control ? Reduced power light on , DTC'S - diagnostic trouble codes stored in the PCM Chevy GMC Code P2135 TPS Problems Watch a few videos on these systems , the gas pedal has sensors , the throttle body does as well , have seen broken wires at connectors . Drive by Wire Function and diagnostics by Wells

Oct 20, 2016 | GMC Cars & Trucks

1 Answer

Can someone help with the P2135 code?


DTC P2135: Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation
Probable cause:
  1. Sensor or solenoid faulty
  2. Connector terminal contact damaged or corroded
  3. Wire harness fault. Check for correct voltage, open, short to ground or short to voltage
  4. Update control unit software - Check for the latest control unit update
  5. PCM or ECM faulty

Jun 21, 2017 | Chevrolet Suburban Cars & Trucks

1 Answer

P2101 and p1516


1. This engine uses the Throttle Actuator Control (TAC) system. Thoroughly clean the throttle bore and throttle plate.

2. Inspect the air intake system for a missing or contaminated air filter

there is also a tsb on it TSB 07-06-04-003 for p1516 that involves replacing the pcm

Subject:LSJ, L61, LK5, L52, LL8 Engine -- Reduced Engine Power, MIL/SES Light, DTC P1516, P2135, P2138 (Replace PCM)

Models:2005-2006 Chevrolet Cobalt, Cobalt SS, Malibu
2006 Chevrolet Colorado, TrailBlazer
2006 GMC Canyon, Envoy
2006 HUMMER H3
2005-2006 Saturn ION, ION Red Line
2006 Saab 9-7X
with ECOTECTM 2.0L, 2.2L I-4 Cylinder Engine (VINs P, F-- RPOs LSJ, L61) or
VORTECTM 2.8L I-4, 3.5L I-5, 4.2L I-6 Cylinder Engine (VINs 8, 6, S -- RPOs LK5, L52, LL8)



Attention: The following bulletin information is only to be used if the customer has returned for REPEAT repairs for DTCs P1516, P2135 and/or P2138.



Condition

Some customers may comment on engine operation in the Reduce Engine Power mode with the MIL/SES light illuminated. This condition may be repeated and upon investigation, the technician may find the following DTCs set as current or in history:

• DTC P1516 Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
• DTC P2135 Throttle Position (TP) Sensor 1-2 Correlation
• DTC P2138 Accelerator Pedal Position (APP) Sensor 1-2 Correlation
Cause

This condition of a repeat DTC P1516, P2135 and/or P2138 may be caused by an internal concern with the PCM.
Correction



Attachments are only available to registered users.

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Attachments are only available to registered users.

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Important: DO NOT replace the APP sensor. Inspect the PCM build date first.

Before following the diagnostic information in SI on DTCs P1516, P2135 and/or P2138, an inspection of the PCM serial number year and Julian (PCM build) date will be necessary to determine if the PCM will need to be replaced to correct the repeat DTC P1516. Refer to Engine Control Module Replacement in SI in order to remove the PCM. Refer to the above graphic illustration (1) for the location of the PCM serial number.

The serial number is read left to right. The last digit of the year is the 9th character and the Julian date is comprised of the 10th, 11th and 12th characters and is used to determine the PCM build date. Refer to the example below to read a build date from the PCM serial number:

* 8 6 Y N AU K 1 5 3 2 5 0 R P N *

If the PCM year and Julian dates are between 5182 and 5304 , replace the PCM. Refer to the Part Catalog to order the correct PCM for your vehicle application, if necessary.

Vehicles with PCM built outside the dates should refer to SI diagnostics for DTCs P1516, P2135 and/or P2138

Dec 13, 2012 | 2006 Chevrolet Cobalt

1 Answer

2004 Trailblazer 6 cyl. idles too low and sometimes will kill but runs great. A scan code of P0606 comes up which relates to the pcm but this has been going on for over a year and it helps idle better...


The low idle could be caused by a dirty throttle body (TB). Take the TB off the intake and clean it thoroughly front and back sides. While doing the cleaning, disconnect the battery to reset the PCM. This will allow it to relearn to the cleaned TB.
As far as the P0606 code, it is possible that the PCM only needs to be reflashed (memory reloaded). This can only be done by a GM dealer.

Aug 26, 2012 | 2004 Chevrolet TrailBlazer

1 Answer

The reduce engine light comes on at 50 mph what could the problem be


DTC P0120 P0220 P1516 P2135 these should be the problem codes.
2003-2006 Chevrolet Avalanche, Corvette, Express, Monte Carlo, Silverado, SSR, Suburban, Tahoe, Trailblazer. for reduced engine power. p0120 is throttle position sensor, ( tps ). p0220 is relates to tps, p1516 tps is out of range. p2135 is a throttle body code, the throttle body needs replaced. but before you do it replace tps first to see if it takes care of the other codes. have a good day !!

Feb 18, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

What are the problems PO601 and PO121? how to solve them. thanks


121 is the throttle position sensor(TPS), 601 is control module memory error.(ECM,PCM)
I would replace the tps and erase the codes and go from there. If your getting crappy gas milage thi is because of the tps. It is located on the side of the throotle body. Opposite of the throotle cables. not hard to replace. Let me know
Randy

Jan 21, 2011 | 2005 Chevrolet Trailblazer Ext

1 Answer

PO121 code still on, replaced o2 sensors, replaced cracked air tube, put seafoam in gas. reset computer, light came back on after 40 miles. same codes. DIAGNOSTIC TROUBLE CODES PO171 System Too Lean...


PO121 : TP Sensor Performance = The PCM supplies 5V to the TP sensor(throttle position). The TP sensor is a variable resistor that drops the voltage to about 4 volts at WOT(wide open throttle) to less than 1 volt at closed throttle. Some TP sensors are adjustable. others have a learn procedure to determine closed throttle. PO171 Fuel Trim System Lean = In closed loop the PCM adjusts fuel delivery based on H2OS 1 readings and is indicated by long & short fuel trim values. If lean the PCM will add fuel (fuel trim above 0%) & if rich the PCM will reduce fuel(fuel trim below 0%) PO128 ECT Below Thermostat Regulating Temperature = possible failed thermostat, low or empty on coolant, Engine Coolant Temp Sensor, Poor connection/Harness/Wires, faulty PCM Connection. I think you hit the nail on the head , the ECT Sensor ( which is different than the temp sensor for the dash gauge)

Jan 18, 2011 | 1999 Kia Sephia

2 Answers

P2135 code reduced power light on. Is it a o2 problem or throttle body.


Thats a throttle body code p2135 that and p2101 unfortanatly are saying that the whole throttle body needs to be replaced do to an electronic malfuntion that is not a serviceable part or sensor.

Jan 04, 2011 | Chevrolet Colorado Cars & Trucks

1 Answer

Check engine light on and reduced engine power i didnt warm my car up could that be the problem once i got home and cut the motor off and restated it the power came back and reduced engine light went off...


Take your TB to Autozone or a parts store that offers a free check engine light check. All they do is tell you what code your check engine light is throwing. Get this code, and we can help from there.

Dec 14, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

Engine power reduced . it just came on come home from work . 5 hr leter i went to go to the store the car would not go over 10 mph 2006 cobalt


you may need to take this to a dealer
you need to find out if
CODES P1516,P2135 and/orP2138 are set in HISTORY
check the julian date on the PCM
under the hood drivers side just in front of the POSITIVE post there is a cover remove that cover that is the PCM
on there there will be a sticker with a bar code and numbers
look something like this * 8 6 Y N AU K 1 5 3 2 5 0 R P N *
the 9th,10 11 and 12th digit
if the PCM has the numbers BETWEEN 5182 and 5304 then the PCM will need to be replaced
see the number i used is NOT EFFECTED it has a 5325
if your is NOT EFFECTED
then mostly will have one of the codes listed
will need to be diag. APP sensor
hopes this helps
and not sure how many miles you have on the car
but they have a POWERTRAIN WARRENTY

Jan 03, 2010 | 2006 Chevrolet Cobalt

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