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2005 trailblazer 4.2 surges in cruise speed - 2005 Chevrolet TrailBlazer

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Posted on Jan 02, 2017

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SOURCE: 2006 Trailblazer with the 4.2 L. At cruising

SCAN IT FOR VSS CODES AND. TRANSMISSION CODES.FOR TORQUE CONVERTER FAULT CODES OR SHIFT VALVES CODES.IF ALL IS GOOD TRANSMISSION GOVERNOR COULD BE CAUSING PROBLEMS.

Posted on Sep 14, 2009

  • 95 Answers

SOURCE: 2005 Trailblazer EXT. Blower speed control not working...

Problem with blower motor is the blower motor resistor. They are usually located next to the blower motor, a couple of screws and a couple of plugs and your done. Autozone sells them for around $30 each. Wipers you may want to check for relays under the hood in the fuse block. There may be 2 relays 1 for low and 1 for high. I have switched relays from other working accesories and got wipers to work. Sometimes bad connection.

Posted on Mar 19, 2010

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2005 trailblazer cruise control not working or the cruise control light not working


Which engine does your trailblazer have 5.3 or 4.2 L
Cruise Control Description and Operation (5.3L)
Cruise Control Description and Operation (4.2L)
makes a difference ! The best way to start diagnostic's is with a scan tool . May have DTC'S diagnostic trouble codes .
DTC P1574 Stop Lamp Switch Circuit
DTC P0568 Cruise Control Set Switch Circuit
DTC P0567 Cruise Control Resume Switch Circuit
Plus with a scan tool you can see if the cruise control switch is inputing to PCM. Data list .
The cruise control resume/accel switch is an input to the powertrain control module (PCM). The PCM uses the cruise control resume/accel switch signal circuit in order to detect when the driver has requested to accelerate the set vehicle speed or to resume the cruise control system. The PCM detects a voltage signal on the cruise control resume/accel switch signal circuit when the switch is applied. This DTC sets if the PCM senses voltage on the cruise control resume/accel switch signal circuit for longer than 90 seconds.
Cruise Control Indicator Inoperative (4.2L)
Turn OFF the ignition.
Install a scan tool.
Turn ON the ignition, with the engine OFF.
With the scan tool, Command the Cruise Control Lamp Test parameter ON, in the instrument panel cluster (IPC) Output Controls.
Does the Cruise indicator illuminate in the IPC?
YES - Go to Step 3
no - Go to Step 4
3
Inspect for poor connections at the harness connector of the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
YES - Go to Step 7
NO - Go to Step 6
4
Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
YES - Go to Step 7
NO - Go to Step 5
5
Replace the IPC. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
YES - Go to Step 7
--
6
Replace the PCM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
Go to Step 7
--
7
Operate the system in order to verify the repair.
Does the system operate properly?
System OK
Go to Step 2

Cruise Control Inoperative/Malfunctioning (4.2L)

Install a scan tool.
Turn ON the ignition, with the engine OFF.
Press the cruise ON/OFF switch OFF.
With the scan tool, observe the Cruise ON/OFF switch parameter in the powertrain control module (PCM) Cruise Control Data list.
Does the Cruise ON/OFF switch parameter display OFF?

Your best bet mite be to take your vehicle to the dealer .

Dec 24, 2016 | Cars & Trucks

4 Answers

2005 Chevy trailblazer ext problems 1. Cruise will not set.worked last on 4/12/15 2. While checking fuses for CC problemdome lights stopped working, but worked fine before checking fuses. PLEASE HELP!


Bummer deal! This may be a way to tell you some tail lights are burnt out. Some cruise controls have a fuse in a second location.
The fuse is not in right or is blown. Check with a new fuse. Hope this helps. ...gc http://www.auto-tune-up-and-repair-options.com/

Apr 20, 2015 | 2005 Chevrolet Trailblazer Ext

1 Answer

CRUISE CONTROL WON'T WORK ON 2005 CHEVY TRAILBLAZER


check cruise control fuse and check the brake lights see if brake light working because the brake light switch will deactivate cruise control when brakes is applied.if brake lights dont work either fuse blowed or switch bad.if all is good have vechicle code scan because cruise control control by PCM and vechicle speed sensor and thottle actuator control motor.

Apr 17, 2013 | 2004 Chevrolet TrailBlazer

1 Answer

My 1998 jeep grand cherokee surges at cruising speeds. also jumps in secound gear.


It sounds like you either have an Electrical Issue with the PCM or your Band is slipping and you are looking at a rebuild sometime soon.

Apr 09, 2013 | 1998 Jeep Grand Cherokee

1 Answer

2005 chevy trailblazer - no cruise control and brake lights only work when key is turned off


I would check the turn signal switch. The cruise and turn signal are on the same switch. The brake lights go through the switch before going to the brake lights. And the turn signals don't work with the ignition off.

Jan 30, 2013 | 2005 Chevrolet TrailBlazer

1 Answer

1999 Silverado has an engine surge of 200-500 RPM at 45 to 55 MPH


sounds a little like a cruise control problem.
they used to have a centering adjustment that kept the speed within a range. If the range somehow shifted to the high end this would cause your surge. it would be a screwdriver slot on the outside of the case.cw increase ccw decrease. yours is set too high or cw.
I work the screw back and forth several times in case dirt entered the cruise module.

Jan 30, 2013 | 1999 Chevrolet Silverado 1500

1 Answer

I have a 2005 Trailblazer EXT. The cruise control all of a sudden stopped working and at the same time my interior light do not come on when I open the door. I am fairly certain it is a fuse. The owners...


I don't believe the two problems are related. For the interior lights check fuses #4 and #40 in the rear fuse panel. Also make sure you didn't inadvertently press the interior light disable button on the left side of the dash.
The cruise control can be disabled for several reasons, such as the check engine light being on, brake lights on continuously, vehicle speed sensor defective or a defect in the turn signal stalk. A technician with a high end scan tool can diagnose the problem easily.

Jul 21, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

Where is the cruise control fuse located on 2005 chev trailblazer


I take it that it's not working? 1 thing to keep in mind...if there are any check engine codes stored in the computer, te cruise control will be disabled. When this code is cleared out, the cruise control will work again.

Apr 07, 2011 | 2005 Chevrolet TrailBlazer

1 Answer

2006 Trailblazer with the 4.2 L. At cruising


SCAN IT FOR VSS CODES AND. TRANSMISSION CODES.FOR TORQUE CONVERTER FAULT CODES OR SHIFT VALVES CODES.IF ALL IS GOOD TRANSMISSION GOVERNOR COULD BE CAUSING PROBLEMS.

Sep 14, 2009 | Chevrolet TrailBlazer Cars & Trucks

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