20 Most Recent 2003 Chevrolet Suburban 1500 - Page 5 Questions & Answers

First clean the idle air control valve with a non-chlronated brake cleaner or replace it with a new one.If that did'nt help check your fuel pressure it should be 9-13 psi with the engine running anything less you will need to replace the fuel pump and fuel filter.

if the transmission fluid level is fine, and the fluid doesnt look black, or smell burnt, id say you need a new seal in the front pump, or possibly a preasure solenoid. Id have it scanned by like autozone or someplace like that, and see if its throwing a code.... either way it sounds like a pressure issue.

check down the column to see if the rod is still attached to the switch if it is the the high low switch is bad

the dimmer switch is mounted on the column below the mounting brace for the column more on top of column on left side 2 screws hold it on.

Hi Jeff Fault code P0456 means evaporator emission control small leak detected. you need to check the tank filling cap, evaporator valve, hoses and connection for leak. Good Luck

it is probably your fuel pump

hope it helps

Kickdown cable unhooked, attaches next to accelerator petal cable.

Traction control relies on the wheel speed sensors. Have you changed any tires to a different size? When you say iscturnscoff, does it say traction is disabled? How fast are you going when it happens?

go to dealer supply proper docs should be free

there may be a software issue, there is a reprogram for seat heater issues. Bulletin 05-08-50-008 may pertain to that, a AC DELCO Shop or the dealer can ck that and see if this bulletin applies.