2008 Chevrolet Silverado 3500 HD Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2008 Chevrolet Silverado 3500 HD
Never overpay. Check prices with our estimator
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Our experts translate recalls into plain English
2008 Chevrolet Silverado 3500 HD ProblemsReduced Power and Check Engine Light
The throttle position sensor (TPS) on the Chevrolet Silverado 3500 HD is notorious for failure which causes:
- Check engine light
- Reduced Power message
- OBD trouble code P2135
This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS.
To correct this issue, the wiring harness, connector, and throttle position sensor must be inspected, tested, and/or replaced. The most common cause is a faulty TPS.
A Loose or worn gas cap may cause Check Engine Light to illuminate.
The spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.
2008 Chevrolet Silverado 3500 HD Questionsblows hot air on drivers side (1 answer)
when using the air conditioner it blows hot on driver side cold on passenger side
We have a 5th wheel trailer and when towing in the mountains (on an incline) with our 3500 Dually and the engine is hot with a half tank of fuel the engine cuts out and goes into reduced power mode. Chevy dealer said it was 2 bad fuel injectors replaced problem continues. Another dealership said ...
How to repair the particle exhaust filter?
2008 Chevrolet Silverado 3500 HD RecallsFront Passenger Air Bag Defective
In a crash that deploys the passenger front air bag, the inflator of the air bag can rupture, causing metal debris to strike vehicle occupants. Dealers will replace the front passenger air bag inflator free of charge to correct the concern.
If too much current is drawn from the auxiliary battery, the fusible link can melt, causing risk of fire. Dealers will replace the jumper harness with one that includes a 40 amp inline fuse, and provide vehicle owners with supplemental owners manual information free of charge to resolve the problem.
The heated washer module under the hood could overheat due to excessive current draw. Under certain conditions, this could result in an under hood fire. This previous recall attempt in 2008 to repair this concern did not have the expected success. Dealers will now permanently disable and remove the heated washer module to correct this concern. This recall is expected to begin on June 20, 2010.