The air conditioning system on some 2003 Pontiac Vibes may fail to adequately cool the interior. One probable cause, says GM, is a misadjusted temperature control cable. Readjusting the cable should eliminate further cooling issues. When performing the adjustment, it's critical that the temperature control knob be held at the “full cold” position while the temp control lever is positioned fully to the rear.
Drivers of 2004 AWD Pacifica models may come into your store with a complaint of a squeal or squeak from the front brakes under light pedal application while driving in Reverse.
Chrysler reports that the problem is limited to vehicles built on or before June 9, 2003, and typically occurs after a prolonged soak in temperatures below 45 degrees. Incompatibility issues between the brake calipers and supports are the most likely cause of the noise. Installing new-design caliper supports (Part No. 05134356AA, right; Part No. 05234357AA, left), along with upgraded front brake pads, Part No. 05134358AA, should eliminate the noise complaints immediately.
Nissan reports that some 2005-07 Xterras, Pathfinders and Frontier pickups with 4.0-liter engines may give off a chirping or squealing sound from the engine compartment. According to the Japanese carmaker, the noise usually occurs at first startup in the morning, especially in cold or damp conditions or after extended run times of one hour or longer. Drive belt slippage is the likely cause of the noise. Installing a revised belt and automatic belt tensioner (Part No. 11720-EA200 and Part No. 11955-EA20A, respectively) should put an end to the irritation.
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via e-mail at [email protected].