Push to the gas station.
From exhaust?? Have catalytic converter checked.
You cannot "fix" it, you need to "replace" it.
change the cabin filters
To fix the secondary air injection system on a Cadillac DTS, first, diagnose the issue using an OBD-II scanner to check for fault codes related to the system. Common problems include a faulty air pump, blocked hoses, or a malfunctioning check valve. Inspect and clean or replace any damaged components, ensuring that the air pump is functioning properly and that all hoses are clear of obstructions. Once repairs are made, clear the fault codes and test the system for proper operation.
replace it
To fix an AC leak on the passenger side of a 2008 Cadillac DTS, first locate the source of the leak, which is often due to a clogged drain line or a failed component like the evaporator core. Inspect and clear the drain line to ensure proper drainage. If the evaporator core is leaking, it may need to be replaced, which involves disassembling parts of the dashboard. After repairs, recharge the AC system and check for leaks again to ensure the issue is resolved.
The only way to fix it is to take it to the dealer and have the whole gage cluster replaced there was a service bulletin out on this from Cadillac and they will pay for part of the cost.
you fix the leak
You'll probably just have to replace it.
my 2000 Cadillac Deville did the same thing. all i did was to turn switch off turn car off counted to 60 turn car back .on light has not come back on
How to fix vapor lock on a 2000 Ford Mustang
how to fix po 743 2000 jeep wrangler