QuestionDaytime running lights always go out when blinker is turned on. What might cause this? Thanks.
AnswerHi
Here is the ACTUAL GM Bulletin for your condition.
Subject: DRL Turn Signal Interrupt Design - kw 99-08-42-002 BCM head light inoperative intermittent lamp #PI00502B - (05/27/2004)
Models: .
--------------------------------------------------------------------------------
When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.
Condition/Concern:
Daytime Running Lamps (DRLs) turn off temporarily while the turn signals are activated.
Recommendation/Instructions:
This is called "TURNSIGNAL INTERRUPT DESIGN". This is a normal characteristic of the vehicle and no "repair" attempts should be made.
.
Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.
Models:
(1998-2001 GMC Jimmy/Envoy 2WD/4WD) and (1998-2004 GMC Sonoma Reg. Cab, Ext. Cab, Crew Cab 2WD/4WD) and (1998-2001 Oldsmobile Bravada AWD)
In a Nutshell it is a NORMAL condition and NO repairs can be made to system.
Thanks so much
Hope this helps
Paul
