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Questions & Answers
MY AC/HEAT WON'T EVEN BLOW
The fuse for the blower motor is in the floor concole fuse panel (see picture below). Also below is a diagram of the fuse layout. The fuse for the blower motor will be the fuse in the number 25 position. I hope this helps and good luck.
on Nov 24, 2019
Buick rendezvous 2003
If the PCM does not monitor IC pulses while IC mode spark advance is commanded DTC P1361 sets.
Observe the Freeze Frame/Failure Records for this DTC.
Turn OFF the ignition for 30 seconds.
Start the engine.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
Is DTC P1362 also set?
YES - Go to Step 6
Turn OFF the ignition.
Disconnect the ICM.
Probe the IC timing control circuit at the PCM with a test lamp connected to battery voltage.
Does the test lamp illuminate?
The ignition control module (ICM) has independent power and ground circuits. The circuits between the ICM and the powertrain control module (PCM) consist of the following circuits:
• The ignition control (IC) timing signal circuit
• The IC timing control circuit
• The low-resolution engine speed signal circuit
• A low reference signal circuit
The ICM sends 3X signals to the PCM. The ICM controls the timing advance during engine cranking. The timing advance changes to PCM control after the following actions:
• The PCM receives the second 3X signal.
• The PCM applies 5 volts to the IC timing signal circuit.
• The timing advance switches to PCM control.
• If the PCM detects a short to voltage in the IC timing signal circuit DTC P1362 sets.
The transmission pressure is modified by an adaptive modifier which controls the shift execution time. This diagnostic tests the time required to accomplish the shift. If the shift takes longer than 0.65 seconds and the adaptive modifier cannot shorten this time, then a counter increases by one.
If the PCM detects a counter value of 2 during one trip, then DTC P1811 sets. DTC P1811 is a type C DTC.
• Ask the customer about possible overloading, exceeding the trailer towing limit, or towing in overdrive.
• Ensure that the current PCM calibration is correct for the final drive ratio.
As the wheel spins, the wheel speed sensor produces an AC signal. The electronic brake control module (EBCM) uses the frequency of the AC signal to calculate the wheel speed.
on Feb 18, 2018
Found rust like material in water system change
You may have to flush the system again. Did you use a commercial flush such as Prestone Super Flush? Plain water won't remove the rust and sludge. The Dex-cool antifreeze that GM recommends for their cars is bad about forming a gummy sludge in the cooling system. It clogs radiators and heater cores. I would suggest another flush with the Prestone product. Follow the directions closely for best results. One thing that will help is. after you drain the radiator, refill with clear water and let the engine run until the coolant is circulating good, then drain it again. Do this three or four times. This will ensure that all the antifreeze has been removed from the engine block. When you refill the radiator, use a green antifreeze that is compatible with aluminum radiators and aluminum engine parts. Do not use Dex-cool. Dex-cool can also cause the intake gaskets to fail. Make sure the new thermostat is at least a 195degree unit and that it is installed correctly. you would be surprised how many thermostats get installed upside down. After refilling the radiator, leave the radiator cap off and let the engine run until the coolant is flowing. Keep adding antifreeze each time the coolant is pulled down into the radiator. Use full strength antifreeze because the water that is retained in the block will dilute it. A 50/50 mixture won't protect below freezing.
on Jan 14, 2018
2003 rendezvous fuel pump reset switch location
GM doesn't use an inertia switch, that I'm aware of. I don't know what testing you have done? Engine cranking, do you have spark at the plugs and fuel injector pulse? Any applicable trouble codes? If through your testing you have narrowed it down to fuel system, note the diagram.
on Nov 23, 2017
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