When my truck is in park or neutral it idles just fine but as soon as I put it in drive or reverse it wants to stall out what is the problem?

Asked by May 06, 2014 at 11:14 PM about the 1995 GMC Sierra 1500 C1500 SL Standard Cab LB

Question type: Maintenance & Repair

1 Answer

355

Sounds to me that you have a vacuum leak somewhere! You need to start checking hoses for dry rot!

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