Gmc W4 Engine Problems
1 owner complaints filed with NHTSA across 1 model years.
Complaints by Year
Worst year: 2000. Best year: 2000.
Owner Reports
A representative sample of complaints filed with NHTSA.
Engine · 2000 2
2000 GMC W-4 PASSENGER SIDE EXHAUST MANIFOLD CRACKS WHICH CAUSES EXHAUST GAS TO COLLECT UNDER THE CAB ALSO EXPOSING A PLASTIC FUEL RETURN LINE TO HIGHER THAN NORMAL TEMPERATURES.*AK