what is Code P0420

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What is the fix for Code P0420 on a 2002 GMC 4X4 4.8L

2002GMC4X4 in Grandville MI

May 15, 2012

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What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 2002 GMC Sierra 1500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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Tuffy Tire & Auto Service Center - Grandview

4.7

(85)

2.39 mi

1524 W 5th Ave

Columbus, OH

Open

Closes 5:00 PM

Call

Excite Auto Repair & Towing

4.4

(15)

5.94 mi

3430 Westerville Road

Columbus, OH

Open

Closes 6:00 PM

Call

All In Auto Service

4.8

(27)

6.56 mi

5200 Fisher Road

Columbus, OH

Open

Closes 6:00 PM

Call

Tuffy Tire & Auto Service - Grove City

4.4

(522)

6.67 mi

2131 Stringtown Rd

Grove City, OH

Open

Closes 6:00 PM

Call

Blackstone Complete Auto Care

4.2

(37)

6.77 mi

4800 Sinclair Road

Columbus, OH

Open

Closes 6:00 PM

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Boyd's Tire & Service - Columbus

4.7

(185)

7.23 mi

5263 Godown Rd

Columbus, OH

Open

Closes 6:00 PM

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Tuffy Tire & Auto Service Center - Grandview

4.7

(85)

2.39 mi

1524 W 5th Ave

Columbus, OH

Open

Closes 5:00 PM

Call