Following from last week’s rushed announcement for an extension of the existing employee discount program to friends and extended family of employees, General Motors has released a new memo to its dealers stating that it plans to offer a $4,000 bonus cash on the purchase of the 2008 GMC Yukon and Yukon XL, including the hybrid model, and an additional $2,000 of customer cash for the 2008 Yukon Hybrid – making a maximum discount of $6,000. Customers also buying the 2008 GMC Envoy SUV will also be entitled for the $6,000 saving.

The new incentives are expected to start tomorrow, August 1, and run up until August 19. Speaking with Automotive News, a spokesman for the company stated that these figures are preliminary and could change after GM releases its second-quarter earnings results due tomorrow.

The incentives don’t end there. According to the memo, GM will also offer cash on some of its new crossovers and cars, including a $1,000 cash bonus for the new Pontiac G8 sedan. There will also be a $750 bonus for the new 2008 GMC Acadia and Buick Enclave crossovers, Pontiac G6 sedan, Buick LaCrosse and Lucerne sedans and Sierra HD pickup.

GM will also offer a $500 discount on the 2008 Pontiac G5 compact and Solstice roadster. The 2009 Pontiac Vibe, meanwhile, receives $500 in customer cash. Finally, GM will offer between $1,500 to $3,000 purchase bonus cash on various versions of the GMC Sierra pickup along with 0% financing for 72 months on the 2008 Sierra LD extended and crew cab models and the 2008 Yukon and Yukon XL, not including the hybrid.