It's easy, you'll want to get Novita LM486 flasher, that way you can run LED's with no problems if you ever choose to do so. It's right under the steer wheel. The panel your knee hits, remove it, it's laying on it. About 4 inches long, about an inch wide. It's a big one. Novita manufacturers all of GM's flashers, the LM486 is LED compatible, will work with or without LED's. Orielly's has them if you need one quick.
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There is no fuse marked for dome light's in the rear fuse box. The BCM - body control module controls the dome / courtesy light's .
The body control module (BCM) monitors the courtesy lamp switch signal circuit in order to determine when the courtesy/dome lamps should be illuminated. When the BCM senses that the courtesy lamp switch signal circuit is grounded when the switch is activated, the BCM will directly illuminate the courtesy/dome lamps.
DTC B3801 Passenger Compartment Lamp Request Circuit
You should possibly think about taking your vehicle to a qualified repair shop !
Install a scan tool.
Turn ON the ignition, with the engine OFF.
With a scan tool, observe the courtesy lamp switch parameter in the body control module (BCM) data list.
Does the scan tool display INACTIVE?
YES - Go to Step 3
NO - Go to Step 4
Activate the courtesy lamp switch.
With the scan tool, observe the courtesy lamp switch data parameter.
Does the courtesy lamp switch data parameter change state?
• Test the courtesy lamp switch for sticking in the ON position.
• Perform a visual inspection for loose or poor connections at all related components. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Yes there was a recall on the brake lights, but I don't believe 06+ was included. NHTSA Campaign Number: 04V527000 Manufacturer GENERAL MOTORS CORP. Components EXTERIOR LIGHTING Potential Number of Units Affected 871,473
My 03 was included and fixed, but my 06 is not. Hope that clarify's. More than likely it's the same darn problem, kind of like the master door switch recall (melting). Not all years were included in the recall, BUT ALL years suffer from this problem. Maybe have them check the problem that the 03's were having.
Best guess is that you have a leak in the transmission oil cooler which is located inside the radiator. It's forcing coolant into the transmission. If that's the case, it may have already damaged the transmission
this is something best left to a qualified repair shop ,Dealer ! This starting system is computer controlled an if you don't know anything about it you could make thing's a lot worst . When you turn the key to the start position , this sends a voltage signal to the PCM through the crank fuse #17 amp located in the under hood fuse / relay box. You could check for B+ volt at this fuse with a volt meter or test light . When the PCM see's this voltage signal it looks for another signal from the PNP - park neutral position switch . If it see's this signal an thier is no anti-theft system problems it will energize the starter relay sending B+ voltage to the starter solenoid .