2008 GMC Sierra 1500 loose power on highway

SOURCE: 2003 GMC Sierra 1500 looses power at highway

Does the reduced engine power message come on? if it does check the electric connector at the throttle body. sometimes the wires get dirty or something. and usually the yellow one.

Marvin

• 85242 Answers
• Posted on Mar 30, 2011

SOURCE: I have a 2003 GMC

Have you received the Gm special Policy letter on the cluster in this year and model GMC? It is like a Recall but on a individual customer complaint only basis. This cluster is a digital cluster, even though the gauges look like the older analog sweep gauges, they have problems and GM will pay to replace them. To make sure you get the new exchange cluster mention that your Gauge needles are erratic, the is the prominent symptom. Since the cluster is replaced and reprogrammed that should take car of the other problem as well for free. If you have had the repair already you have a defective cluster and it will need to be removed and send out to a GM electronics repair center.
The GM document number and statement of coverage is below on this problem:

Its not a recall but a "Special Policy" bulletin, Here's a copy of it.
Document ID# 2037454
Subject: Special Coverage Adjustment-Instrument Panel Cluster Gauge Needle Functions #07187A - (11/08/2007)
Models: 2003-2004 CADILLAC ESCALADE, ESCALADE ESV, ESCALADE EXT

2003-2004 CHEVROLET AVALANCHE, SILVERADO, SUBURBAN, TAHOE

2003-2004 GMC SIERRA, YUKON, YUKON XL