What could be causing my problem?

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My truck is getting worse than normal gas mileage, black smoke comes out of the exhaust and when I am at a stop light it rattles. I have had someone look at it, and they have changed the spark plugs and the Catalytic converters. But I still have this problem....any ideas??

How long has your 1999 Chevrolet Tahoe had this problem?

Couple months

Visitor

in Albany GA

May 20, 2020

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What are the best Chevrolet repair shops?

RepairPal Certified shops can diagnose and repair your 1999 Chevrolet Tahoe. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

Popular Answer

What could be causing my problem?

What is your question?

How long has your 1999 Chevrolet Tahoe had this problem?

Couple months

Visitor

in Albany GA

May 20, 2020

1 Reply

Popular Answer

pushrodon May 20, 2020

Black smoke is a very rich exhaust condition - (too much fuel) - there’s multiple possibilities that will require *hands-on* diagnostic testing to discover the actual culprit.. A professional - comprehensive scan test is the first step along with fuel pressure testing.

pushrodon May 20, 2020

“Ideas“ as to what the actual failure is are not going to be beneficial here - TESTING is the key to any successful repair. Good luck!

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Popular Answer

What are the best Chevrolet repair shops?

RepairPal Certified shops can diagnose and repair your 1999 Chevrolet Tahoe. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.