20 Most Recent 2003 Buick Rendezvous Questions & Answers


Flush the engine with proper compound (rind it at auto part store) have to change oil more often.....recommend Valvoline

2003 Buick... • Answered Yesterday


Is the security light lit on the instrument cluster ? If not , not a security problem . Have you taken an had diagnostic done ? That's your best course of action . These systems are complex !

2003 Buick... • Answered on Mar 27, 2021


Does this 'pipe/tube' come through the bulkhead at the back of the engine bay from inside the car or is it on or near the actual engine? Could you comment below with another 'close up' photo of the the actual pipe? If it is one of the two pipes poking through the bulkhead, it could be the 'Heater Matrix'. This is one of those jobs that to change the actual part is easy but getting to the part is a total pain in the tail bone. A 'take the Dashboard out' job. Replacing most pipes, hoses and tubes will depend on what is at each end of it. Most short sections can be replaced if they are not part of something else like a water pump or a thermostat housing.

2003 Buick... • Answered on Dec 10, 2020


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.


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2003 Buick... • Answered on Nov 24, 2019


Disconnect coil connector - remove screws to cylinder head - pull up to disconnect from spark plug - reverse procedure to install new coils. Existing coils cn be tested by swapping coil with known good coil. https://www.6ya.com/callphilipforhelp

2003 Buick... • Answered on Jun 11, 2019


Where is the fuel reset button

2003 Buick... • Answered on Mar 30, 2019


It has lost the signal for the computer. It happens. It has to be reprogrammed. Some garages can do it. Most likely a dealer.

2003 Buick... • Answered on Nov 16, 2018


YOU HAVE ENGINE VACUUM LEAK.AROUND THROTTLE BODY AREA COULD BE THROTTLE BODY GASKET OR ITS LOOSE.THE IDLE AIR INLET PASSAGE OR THROTTLE BORE IS DIRTY FULL OF CARBON BUILT UP.YOUR IDLE SPEED CONTROL COULD BE FAULTY.

2003 Buick... • Answered on Apr 25, 2018


Tire balance, tire out of round or seperating, constant velocity axle worn or worn ft end parts and alignment.

2003 Buick... • Answered on Apr 05, 2018


Misfire ,vacuum leak , dirty throttle body , IAC - idle air control valve problem . Videos on youtube !

2003 Buick... • Answered on Mar 18, 2018


DTC P1361 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. Diagnostic Aids • 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. DTC C0035-C0051 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.

2003 Buick... • Answered on Feb 18, 2018


Inside the driver door latch, there is a switch for the key that tells the system, the key switch is on or off position but usually, the wires are cut or if you prefer open circuit. BUT you didn't mention if you try to unlock the door with your key or with the keyless entry?? Can you unlock the driver's door with the inside switch if not look for door lock problems? Hope it helps

2003 Buick... • Answered on Feb 06, 2018

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