The air suspension inactive message may be displayed with fault code 41 stored. Our technicians tell us the air suspension electronic control unit (ECU) software should be updated prior to attempting to diagnose this concern.
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In severe wet conditions, water may enter the anti-lock brake system (ABS) modulator electrical connector resulting in corrosion and illumination of the ABS warning light. Our technicians tell us revised modulator ground leads are available to better seal the connector. If corrosion is found in the electrical connector the connector will need to be repaired as necessary and the new ground leads installed.
One or both power folding mirrors may not fold in or out correctly. This can be a result of a dis-logged micro switch in the mirror assembly. Our technicians recommend checking this micro switch before replacing the mirror assembly.
An oil leak may develop from the front crankshaft seal. Our technicians tell us a revised seal is available which should correct this concern.
An oil leak may develop from the oil pan area. This may be caused by improper sealing of the oil pan "through" bolts. Our technicians tell use that revised "patch" bolts and sealing procedures are available to correct these leaks.
Hard starting may be noted in extreme cold conditions, -5 degrees Fahrenheit and below. Our technicians tell us an updated engine control module (ECM) PROM is available to correct this concern.
An oil leak at the front of the engine may be a result if internal cracks in the timing cover. These cracks are caused by over torquing the oil cooler pipes. If leaks are noted at the cooler pipe fittings, the fittings/pipes should be removed, cleaned, and reinstalled to the correct torque. Our technicians tell us if the leaks persist the timing cover is most likely cracked internally and should be replaced.
A rough or unstable idle may be noted due to an intake manifold vacuum leak. Our technicians tell us a revised intake manifold gasket, along with manifold bolt flat washers which will better distribute the clamping force are available to correct this concern.
The automatic transmission may exhibit a harsh downshift from second to first gear. Our technicians tell us that updated transmission control module software is available to correct this concern.
Various faults may occur with the air suspension system. Cold weather conditions may result in low Battery voltage and/or the pressure relief valve may freeze open, resulting in loss of air pressure and damaged to the rear air springs, requiring spring replacement. Faults with a sticking pressure switch, pressure sensor, or electronic control unit can cause the air suspension warning lamp to illuminate.
The fuel gauge may read incorrectly due to a failed fuel sending unit inside the fuel tank. Failed sending units should be replaced to restore proper fuel gauge operation.
The check coolant warning light may illuminate if the incorrect engine coolant mix or type is used. The coolant/water mixture should be kept at the 50/50 ratio for proper warning light operation. Additionally, if the incorrect type of coolant is used, cylinder head and cooling system damage may result.
A chirping type noise may be noted from the engine area, mostly at idle. This type of noise is generally caused by a faulty drive belt idler pulley. Our technicians tell us a revised pulley is available to correct this concern. Chirping Type Noise From Engine at Idle