05 GMC Sierra surging at lower rpm - The 1947 - Present Chevrolet & GMC Truck Message Board Network

2wd73blazer · 12-31-2011, 01:03 AM

I have a 05 GMC Sierra with a 5.3. Cruising between 40 and 55 it surges. I can feel it really when its under load like pulling a long slow incline. The rpms jump anywhere from 200-500. It does it in lockup and in drive. It is more noticeable in od though. I changed the spark plugs and wires with oem. I had the throttle body and maf cleaned. I had the fuel pressure checked (holds 60). I had the trans fluid and filter changed. Anyone have any ideas?

12-31-2011, 01:03 AM	#1
2wd73blazer Registered User Join Date: Jan 2008 Location: North Augusta,SC Posts: 801	05 GMC Sierra surging at lower rpm I have a 05 GMC Sierra with a 5.3. Cruising between 40 and 55 it surges. I can feel it really when its under load like pulling a long slow incline. The rpms jump anywhere from 200-500. It does it in lockup and in drive. It is more noticeable in od though. I changed the spark plugs and wires with oem. I had the throttle body and maf cleaned. I had the fuel pressure checked (holds 60). I had the trans fluid and filter changed. Anyone have any ideas?



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.