Exterior Lighting Related Problems of the 1999 GMC Sonoma

Table 1 shows two common exterior lighting related problems of the 1999 GMC Sonoma. The number one most common problem is related to the headlights (two problems). The second most common problem is related to the turn signal switch (one problem).

Table 1. Exterior Lighting related problems of GMC Sonoma

Problem Category	Number of Problems
Headlights problems	2
Turn Signal Switch problems	1

Recently reported Exterior Lighting problems of the 1999 GMC Sonoma

The Headlights problem

Whenever turn signal is activated, day time running lights go out. After turn signal goes off, daytime running lights come back on. Dealer/ manufacturer are aware of the problem. Problem has not been corrected. Read details...

The Turn Signal Switch problem

Headlights cut off when the signal lights are applied, then come back on. Also when driver parks the vehicle the headlights are out. Dealer can't find solution. Read details...

Exterior Lighting related problems in other GMC Sonoma model year vehicles:

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