20 Most Recent
2007 Chevrolet TrailBlazer SS Questions & Answers
Dyi instructions for removal/replacement of heater
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Drain the engine cooling system.
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Remove or disconnect the following:
Negative battery cable and Heater hoses from the heater core
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Remove the instrument panel as follows:
.
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Set the parking brake and block the wheels.
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Disconnect the parking brake release cable from the parking brake lever.
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Unfasten the screws that retain the DLC instrument panel left side
sound insulator. Feed the DLC through the hole in the sound insulator.
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Unfasten the right side sound insulator panel screws and remove the panel.
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Unfasten the screws that attach the instrument panel left side sound insulator to the knee bolster and cowl panel.
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Unfasten the nut that attaches the left side sound insulator to the accelerator pedal bracket.
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Unplug the remote control door lock receiver module electrical connector.
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Remove the door lock receiver module from the left side sound insulator. Remove the left side sound insulator.
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Unfasten the screws that attach the instrument panel center sound
insulator to the knee bolster, instrument panel, heater assembly and
floor duct.
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Remove the center sound insulator.
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Unfasten the screws that attach the courtesy lamp to the knee bolster.
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Unfasten the screws that attach the knee bolster to the instrument panel.
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Disconnect the lap cooler duct from the knee bolster.
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Unplug the lighter electrical connection and remove the knee bolster.
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Unfasten the steering column-to-instrument panel nuts and lower the column.
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Unfasten the screws that attach the instrument panel accessory trim plate to the instrument panel.
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Remove the trim plate and unplug all necessary electrical connection.
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Remove the heater and/or air conditioning control assembly.
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Remove the radio and the storage compartment assembly (if equipped).
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If necessary, remove the instrument cluster.
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Unfasten the left and right instrument panel pivot bolts and the panel lower support bolt.
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Unfasten the speaker grilles retaining screws and remove the speaker grilles.
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Remove the windshield defroster grille using a flat-bladed
prytool. Start at one end of the grille and work your way down the
grille.
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Unfasten the 4 instrument panel upper support screws.
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Tag and unplug all necessary electrical connections.
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Remove the instrument panel from the vehicle.
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Remove or disconnect the following:
Air inlet assembly, if equipped
,
Vacuum hoses
Heater assembly studs, from inside the engine compartment,
Blower motor resistor
Stud from inside the heater case assembly; the stud is located behind the blower motor resistor
Heater assembly-to-chassis screws,
Heater assembly from the vehicle
Access cover screws and cover from the heater assembly
Heater core from the heater case assembly
Fig. View of the heater case assembly
Fig. View of the heater case cover
Fig. View of the heater core
Fig. Heater core mounting
To install:
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Install or connect the following:
Heater core to the heater case assembly,
Access cover to the heater assembly and the cover screws,
Heater assembly to the vehicle
Heater assembly-to-chassis screws and torque them to 40 inch lbs. (4.5 Nm)
Stud, working from inside the heater case assembly; the stud is located behind the blower motor resistor,
Blower motor resistor
Heater assembly studs, working inside the engine compartment, torque them to 17 inch lbs. (1.9 Nm),
Vacuum hoses,
Air inlet assembly, if equipped
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Install the instrument panel as follows:
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Rest the instrument panel on the lower pivot studs.
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Attach the electrical connections.
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Install but do not tighten the 4 upper instrument panel support screws.
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Install the left and right panel pivot bolts. Tighten the bolts to 102 inch lbs. (11.5 Nm).
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Install the panel lower support bolt. Tighten the bolt to 102 inch lbs. (11.5 Nm).
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Tighten the upper support screws to 17 inch lbs. (1.9 Nm).
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Install the windshield defroster grille and the speaker grilles.
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Install the radio and storage compartment assembly (if equipped).
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If removed, install the instrument cluster.
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Install the heater and/or air conditioning control assembly.
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Attach the electrical connections to the instrument panel accessory trim plate.
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Place the trim plate in position and install its retaining screws. Tighten the screws to 17 inch lbs. (1.9 Nm).
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Place the steering column into position and install its retaining nuts. Tighten the nuts to 22 ft. lbs. (30 Nm).
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Attach the lighter electrical connection and the lap cooler duct to the knee bolster.
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Place the knee bolster into position and install its retaining
screws. Tighten the Torx® head screws to 80 inch lbs. (9 Nm) and the hex
head screws to 17 inch lbs. (1.9 Nm).
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Place the courtesy lamp in position and install its screws. Tighten the screws to 17 inch lbs. (1.9 Nm).
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Place the instrument panel center sound insulator in position.
Install the screws that attach the center sound insulator to the knee
bolster, instrument panel and the floor duct. Tighten the screws to 17
inch lbs. (1.9 Nm).
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Install the screw that attaches the center sound insulator to the heater assembly. Tighten the screw to 13 inch lbs. (1.5 Nm).
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Install the remote control door lock receiver module to the instrument panel left side sound insulator.
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Attach the door lock receiver electrical connection.
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Install the nut that attaches the left side sound insulator to the
accelerator pedal bracket. Tighten the nut to 35 inch lbs. (4 Nm).
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Install the screw that attaches the left side sound insulator to cowl panel. Tighten the screw to 13 inch lbs. (1.5 Nm).
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Install the screws that attach the left side sound insulator to knee bolster. Tighten the screw to 17 inch lbs. (1.9 Nm).
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Feed the DLC through the hole in the sound insulator, place the
DLC in position and install its retaining screws. Tighten the screws to
21 inch lbs. (2.4 Nm).
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Install the right side sound insulator and tighten the screws
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Connect the parking brake release cable to the lever
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Install the heater hoses to the heater core.
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Refill the cooling system.
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Connect the negative battery cable.
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Run the engine to normal operating temperatures; then, check the climate control operation and check for leaks.
2007 trailblazer master door control stopped working
Ouch! Did you not know there was a recall on this? Possible your year wasn't on it, but this problem does in fact affect all years regardless. A brand new one requires a dealer flash, basically needs to be programmed. You have 2 options, bring your car to dealer to have them flash the new master switch. OR pull one out of a wrecking yard (does not need to be flashed), it's plug and play. What I'd do if I were you, is find one at a wrecking yard, and call the dealer, give them the serial # on it and see if it's a known good one, meaning it's been updated not to burn up when it gets a little wet. New= dealer flash, Used, is plug and play.
I installed HID headlights and fog lights about 2
The headlights run through a relay (#46) through the BCM. If the relay were bad (very common and has a recall) both lights would not work. Sooo, I'm thinking check the wiring and pigtail that goes to the bulb. People that use Silverstar halogeon bulbs will burn that wire and or the connector. Make sure these are sound, check for power at the connector too.
Fix AC system
A few things could be wrong here. 1. if your running low on anti-freeze and your engine is getting hot, the thermal switch on the AC compressor will shut it off until it cools down. 2. You could be low on freon. 3. Your compressor may be bad with leaks.
Location of 2007 chevy trailblazer thermostat
Follow the radiator hose back to the engine on the top side. Where the hose connects to the engine is the thermostat housing. Remove the hose clamp and hose (when vehicle is cool). remove the housing itself and the thermostat will be right in front of you. .
How do you remove door panel on 2007 chevy trailblazer
There are 2 either 10 mm or T30 torx head bolts around the armrest. They are semi hidden so you have to peek down holes. The rest is held on by plastic clips, there is a special tool for these, you have to feel between the trim panel and door till you find them and pry carefully. 1 of the bolts may be under the switch panel if its a front door
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